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Diffstat (limited to 'lib/mbedtls-2.27.0/include/psa/crypto.h')
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diff --git a/lib/mbedtls-2.27.0/include/psa/crypto.h b/lib/mbedtls-2.27.0/include/psa/crypto.h deleted file mode 100644 index 17bebf3..0000000 --- a/lib/mbedtls-2.27.0/include/psa/crypto.h +++ /dev/null @@ -1,3951 +0,0 @@ -/** - * \file psa/crypto.h - * \brief Platform Security Architecture cryptography module - */ -/* - * Copyright The Mbed TLS Contributors - * SPDX-License-Identifier: Apache-2.0 - * - * Licensed under the Apache License, Version 2.0 (the "License"); you may - * not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT - * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef PSA_CRYPTO_H -#define PSA_CRYPTO_H - -#include "crypto_platform.h" - -#include <stddef.h> - -#ifdef __DOXYGEN_ONLY__ -/* This __DOXYGEN_ONLY__ block contains mock definitions for things that - * must be defined in the crypto_platform.h header. These mock definitions - * are present in this file as a convenience to generate pretty-printed - * documentation that includes those definitions. */ - -/** \defgroup platform Implementation-specific definitions - * @{ - */ - -/**@}*/ -#endif /* __DOXYGEN_ONLY__ */ - -#ifdef __cplusplus -extern "C" { -#endif - -/* The file "crypto_types.h" declares types that encode errors, - * algorithms, key types, policies, etc. */ -#include "crypto_types.h" - -/** \defgroup version API version - * @{ - */ - -/** - * The major version of this implementation of the PSA Crypto API - */ -#define PSA_CRYPTO_API_VERSION_MAJOR 1 - -/** - * The minor version of this implementation of the PSA Crypto API - */ -#define PSA_CRYPTO_API_VERSION_MINOR 0 - -/**@}*/ - -/* The file "crypto_values.h" declares macros to build and analyze values - * of integral types defined in "crypto_types.h". */ -#include "crypto_values.h" - -/** \defgroup initialization Library initialization - * @{ - */ - -/** - * \brief Library initialization. - * - * Applications must call this function before calling any other - * function in this module. - * - * Applications may call this function more than once. Once a call - * succeeds, subsequent calls are guaranteed to succeed. - * - * If the application calls other functions before calling psa_crypto_init(), - * the behavior is undefined. Implementations are encouraged to either perform - * the operation as if the library had been initialized or to return - * #PSA_ERROR_BAD_STATE or some other applicable error. In particular, - * implementations should not return a success status if the lack of - * initialization may have security implications, for example due to improper - * seeding of the random number generator. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_INSUFFICIENT_STORAGE - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_INSUFFICIENT_ENTROPY - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_DATA_INVALID - * \retval #PSA_ERROR_DATA_CORRUPT - */ -psa_status_t psa_crypto_init(void); - -/**@}*/ - -/** \addtogroup attributes - * @{ - */ - -/** \def PSA_KEY_ATTRIBUTES_INIT - * - * This macro returns a suitable initializer for a key attribute structure - * of type #psa_key_attributes_t. - */ -#ifdef __DOXYGEN_ONLY__ -/* This is an example definition for documentation purposes. - * Implementations should define a suitable value in `crypto_struct.h`. - */ -#define PSA_KEY_ATTRIBUTES_INIT {0} -#endif - -/** Return an initial value for a key attributes structure. - */ -static psa_key_attributes_t psa_key_attributes_init(void); - -/** Declare a key as persistent and set its key identifier. - * - * If the attribute structure currently declares the key as volatile (which - * is the default content of an attribute structure), this function sets - * the lifetime attribute to #PSA_KEY_LIFETIME_PERSISTENT. - * - * This function does not access storage, it merely stores the given - * value in the structure. - * The persistent key will be written to storage when the attribute - * structure is passed to a key creation function such as - * psa_import_key(), psa_generate_key(), - * psa_key_derivation_output_key() or psa_copy_key(). - * - * This function may be declared as `static` (i.e. without external - * linkage). This function may be provided as a function-like macro, - * but in this case it must evaluate each of its arguments exactly once. - * - * \param[out] attributes The attribute structure to write to. - * \param key The persistent identifier for the key. - */ -static void psa_set_key_id( psa_key_attributes_t *attributes, - mbedtls_svc_key_id_t key ); - -#ifdef MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER -/** Set the owner identifier of a key. - * - * When key identifiers encode key owner identifiers, psa_set_key_id() does - * not allow to define in key attributes the owner of volatile keys as - * psa_set_key_id() enforces the key to be persistent. - * - * This function allows to set in key attributes the owner identifier of a - * key. It is intended to be used for volatile keys. For persistent keys, - * it is recommended to use the PSA Cryptography API psa_set_key_id() to define - * the owner of a key. - * - * \param[out] attributes The attribute structure to write to. - * \param owner_id The key owner identifier. - */ -static void mbedtls_set_key_owner_id( psa_key_attributes_t *attributes, - mbedtls_key_owner_id_t owner_id ); -#endif - -/** Set the location of a persistent key. - * - * To make a key persistent, you must give it a persistent key identifier - * with psa_set_key_id(). By default, a key that has a persistent identifier - * is stored in the default storage area identifier by - * #PSA_KEY_LIFETIME_PERSISTENT. Call this function to choose a storage - * area, or to explicitly declare the key as volatile. - * - * This function does not access storage, it merely stores the given - * value in the structure. - * The persistent key will be written to storage when the attribute - * structure is passed to a key creation function such as - * psa_import_key(), psa_generate_key(), - * psa_key_derivation_output_key() or psa_copy_key(). - * - * This function may be declared as `static` (i.e. without external - * linkage). This function may be provided as a function-like macro, - * but in this case it must evaluate each of its arguments exactly once. - * - * \param[out] attributes The attribute structure to write to. - * \param lifetime The lifetime for the key. - * If this is #PSA_KEY_LIFETIME_VOLATILE, the - * key will be volatile, and the key identifier - * attribute is reset to 0. - */ -static void psa_set_key_lifetime(psa_key_attributes_t *attributes, - psa_key_lifetime_t lifetime); - -/** Retrieve the key identifier from key attributes. - * - * This function may be declared as `static` (i.e. without external - * linkage). This function may be provided as a function-like macro, - * but in this case it must evaluate its argument exactly once. - * - * \param[in] attributes The key attribute structure to query. - * - * \return The persistent identifier stored in the attribute structure. - * This value is unspecified if the attribute structure declares - * the key as volatile. - */ -static mbedtls_svc_key_id_t psa_get_key_id( - const psa_key_attributes_t *attributes); - -/** Retrieve the lifetime from key attributes. - * - * This function may be declared as `static` (i.e. without external - * linkage). This function may be provided as a function-like macro, - * but in this case it must evaluate its argument exactly once. - * - * \param[in] attributes The key attribute structure to query. - * - * \return The lifetime value stored in the attribute structure. - */ -static psa_key_lifetime_t psa_get_key_lifetime( - const psa_key_attributes_t *attributes); - -/** Declare usage flags for a key. - * - * Usage flags are part of a key's usage policy. They encode what - * kind of operations are permitted on the key. For more details, - * refer to the documentation of the type #psa_key_usage_t. - * - * This function overwrites any usage flags - * previously set in \p attributes. - * - * This function may be declared as `static` (i.e. without external - * linkage). This function may be provided as a function-like macro, - * but in this case it must evaluate each of its arguments exactly once. - * - * \param[out] attributes The attribute structure to write to. - * \param usage_flags The usage flags to write. - */ -static void psa_set_key_usage_flags(psa_key_attributes_t *attributes, - psa_key_usage_t usage_flags); - -/** Retrieve the usage flags from key attributes. - * - * This function may be declared as `static` (i.e. without external - * linkage). This function may be provided as a function-like macro, - * but in this case it must evaluate its argument exactly once. - * - * \param[in] attributes The key attribute structure to query. - * - * \return The usage flags stored in the attribute structure. - */ -static psa_key_usage_t psa_get_key_usage_flags( - const psa_key_attributes_t *attributes); - -/** Declare the permitted algorithm policy for a key. - * - * The permitted algorithm policy of a key encodes which algorithm or - * algorithms are permitted to be used with this key. The following - * algorithm policies are supported: - * - 0 does not allow any cryptographic operation with the key. The key - * may be used for non-cryptographic actions such as exporting (if - * permitted by the usage flags). - * - An algorithm value permits this particular algorithm. - * - An algorithm wildcard built from #PSA_ALG_ANY_HASH allows the specified - * signature scheme with any hash algorithm. - * - An algorithm built from #PSA_ALG_AT_LEAST_THIS_LENGTH_MAC allows - * any MAC algorithm from the same base class (e.g. CMAC) which - * generates/verifies a MAC length greater than or equal to the length - * encoded in the wildcard algorithm. - * - An algorithm built from #PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG - * allows any AEAD algorithm from the same base class (e.g. CCM) which - * generates/verifies a tag length greater than or equal to the length - * encoded in the wildcard algorithm. - * - * This function overwrites any algorithm policy - * previously set in \p attributes. - * - * This function may be declared as `static` (i.e. without external - * linkage). This function may be provided as a function-like macro, - * but in this case it must evaluate each of its arguments exactly once. - * - * \param[out] attributes The attribute structure to write to. - * \param alg The permitted algorithm policy to write. - */ -static void psa_set_key_algorithm(psa_key_attributes_t *attributes, - psa_algorithm_t alg); - - -/** Retrieve the algorithm policy from key attributes. - * - * This function may be declared as `static` (i.e. without external - * linkage). This function may be provided as a function-like macro, - * but in this case it must evaluate its argument exactly once. - * - * \param[in] attributes The key attribute structure to query. - * - * \return The algorithm stored in the attribute structure. - */ -static psa_algorithm_t psa_get_key_algorithm( - const psa_key_attributes_t *attributes); - -/** Declare the type of a key. - * - * This function overwrites any key type - * previously set in \p attributes. - * - * This function may be declared as `static` (i.e. without external - * linkage). This function may be provided as a function-like macro, - * but in this case it must evaluate each of its arguments exactly once. - * - * \param[out] attributes The attribute structure to write to. - * \param type The key type to write. - * If this is 0, the key type in \p attributes - * becomes unspecified. - */ -static void psa_set_key_type(psa_key_attributes_t *attributes, - psa_key_type_t type); - - -/** Declare the size of a key. - * - * This function overwrites any key size previously set in \p attributes. - * - * This function may be declared as `static` (i.e. without external - * linkage). This function may be provided as a function-like macro, - * but in this case it must evaluate each of its arguments exactly once. - * - * \param[out] attributes The attribute structure to write to. - * \param bits The key size in bits. - * If this is 0, the key size in \p attributes - * becomes unspecified. Keys of size 0 are - * not supported. - */ -static void psa_set_key_bits(psa_key_attributes_t *attributes, - size_t bits); - -/** Retrieve the key type from key attributes. - * - * This function may be declared as `static` (i.e. without external - * linkage). This function may be provided as a function-like macro, - * but in this case it must evaluate its argument exactly once. - * - * \param[in] attributes The key attribute structure to query. - * - * \return The key type stored in the attribute structure. - */ -static psa_key_type_t psa_get_key_type(const psa_key_attributes_t *attributes); - -/** Retrieve the key size from key attributes. - * - * This function may be declared as `static` (i.e. without external - * linkage). This function may be provided as a function-like macro, - * but in this case it must evaluate its argument exactly once. - * - * \param[in] attributes The key attribute structure to query. - * - * \return The key size stored in the attribute structure, in bits. - */ -static size_t psa_get_key_bits(const psa_key_attributes_t *attributes); - -/** Retrieve the attributes of a key. - * - * This function first resets the attribute structure as with - * psa_reset_key_attributes(). It then copies the attributes of - * the given key into the given attribute structure. - * - * \note This function may allocate memory or other resources. - * Once you have called this function on an attribute structure, - * you must call psa_reset_key_attributes() to free these resources. - * - * \param[in] key Identifier of the key to query. - * \param[in,out] attributes On success, the attributes of the key. - * On failure, equivalent to a - * freshly-initialized structure. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_DATA_CORRUPT - * \retval #PSA_ERROR_DATA_INVALID - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_get_key_attributes(mbedtls_svc_key_id_t key, - psa_key_attributes_t *attributes); - -/** Reset a key attribute structure to a freshly initialized state. - * - * You must initialize the attribute structure as described in the - * documentation of the type #psa_key_attributes_t before calling this - * function. Once the structure has been initialized, you may call this - * function at any time. - * - * This function frees any auxiliary resources that the structure - * may contain. - * - * \param[in,out] attributes The attribute structure to reset. - */ -void psa_reset_key_attributes(psa_key_attributes_t *attributes); - -/**@}*/ - -/** \defgroup key_management Key management - * @{ - */ - -/** Remove non-essential copies of key material from memory. - * - * If the key identifier designates a volatile key, this functions does not do - * anything and returns successfully. - * - * If the key identifier designates a persistent key, then this function will - * free all resources associated with the key in volatile memory. The key - * data in persistent storage is not affected and the key can still be used. - * - * \param key Identifier of the key to purge. - * - * \retval #PSA_SUCCESS - * The key material will have been removed from memory if it is not - * currently required. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p key is not a valid key identifier. - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_purge_key(mbedtls_svc_key_id_t key); - -/** Make a copy of a key. - * - * Copy key material from one location to another. - * - * This function is primarily useful to copy a key from one location - * to another, since it populates a key using the material from - * another key which may have a different lifetime. - * - * This function may be used to share a key with a different party, - * subject to implementation-defined restrictions on key sharing. - * - * The policy on the source key must have the usage flag - * #PSA_KEY_USAGE_COPY set. - * This flag is sufficient to permit the copy if the key has the lifetime - * #PSA_KEY_LIFETIME_VOLATILE or #PSA_KEY_LIFETIME_PERSISTENT. - * Some secure elements do not provide a way to copy a key without - * making it extractable from the secure element. If a key is located - * in such a secure element, then the key must have both usage flags - * #PSA_KEY_USAGE_COPY and #PSA_KEY_USAGE_EXPORT in order to make - * a copy of the key outside the secure element. - * - * The resulting key may only be used in a way that conforms to - * both the policy of the original key and the policy specified in - * the \p attributes parameter: - * - The usage flags on the resulting key are the bitwise-and of the - * usage flags on the source policy and the usage flags in \p attributes. - * - If both allow the same algorithm or wildcard-based - * algorithm policy, the resulting key has the same algorithm policy. - * - If either of the policies allows an algorithm and the other policy - * allows a wildcard-based algorithm policy that includes this algorithm, - * the resulting key allows the same algorithm. - * - If the policies do not allow any algorithm in common, this function - * fails with the status #PSA_ERROR_INVALID_ARGUMENT. - * - * The effect of this function on implementation-defined attributes is - * implementation-defined. - * - * \param source_key The key to copy. It must allow the usage - * #PSA_KEY_USAGE_COPY. If a private or secret key is - * being copied outside of a secure element it must - * also allow #PSA_KEY_USAGE_EXPORT. - * \param[in] attributes The attributes for the new key. - * They are used as follows: - * - The key type and size may be 0. If either is - * nonzero, it must match the corresponding - * attribute of the source key. - * - The key location (the lifetime and, for - * persistent keys, the key identifier) is - * used directly. - * - The policy constraints (usage flags and - * algorithm policy) are combined from - * the source key and \p attributes so that - * both sets of restrictions apply, as - * described in the documentation of this function. - * \param[out] target_key On success, an identifier for the newly created - * key. For persistent keys, this is the key - * identifier defined in \p attributes. - * \c 0 on failure. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_INVALID_HANDLE - * \p source_key is invalid. - * \retval #PSA_ERROR_ALREADY_EXISTS - * This is an attempt to create a persistent key, and there is - * already a persistent key with the given identifier. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The lifetime or identifier in \p attributes are invalid. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The policy constraints on the source and specified in - * \p attributes are incompatible. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p attributes specifies a key type or key size - * which does not match the attributes of the source key. - * \retval #PSA_ERROR_NOT_PERMITTED - * The source key does not have the #PSA_KEY_USAGE_COPY usage flag. - * \retval #PSA_ERROR_NOT_PERMITTED - * The source key is not exportable and its lifetime does not - * allow copying it to the target's lifetime. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_INSUFFICIENT_STORAGE - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_DATA_INVALID - * \retval #PSA_ERROR_DATA_CORRUPT - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_copy_key(mbedtls_svc_key_id_t source_key, - const psa_key_attributes_t *attributes, - mbedtls_svc_key_id_t *target_key); - - -/** - * \brief Destroy a key. - * - * This function destroys a key from both volatile - * memory and, if applicable, non-volatile storage. Implementations shall - * make a best effort to ensure that that the key material cannot be recovered. - * - * This function also erases any metadata such as policies and frees - * resources associated with the key. - * - * If a key is currently in use in a multipart operation, then destroying the - * key will cause the multipart operation to fail. - * - * \param key Identifier of the key to erase. If this is \c 0, do nothing and - * return #PSA_SUCCESS. - * - * \retval #PSA_SUCCESS - * \p key was a valid identifier and the key material that it - * referred to has been erased. Alternatively, \p key is \c 0. - * \retval #PSA_ERROR_NOT_PERMITTED - * The key cannot be erased because it is - * read-only, either due to a policy or due to physical restrictions. - * \retval #PSA_ERROR_INVALID_HANDLE - * \p key is not a valid identifier nor \c 0. - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * There was an failure in communication with the cryptoprocessor. - * The key material may still be present in the cryptoprocessor. - * \retval #PSA_ERROR_DATA_INVALID - * This error is typically a result of either storage corruption on a - * cleartext storage backend, or an attempt to read data that was - * written by an incompatible version of the library. - * \retval #PSA_ERROR_STORAGE_FAILURE - * The storage is corrupted. Implementations shall make a best effort - * to erase key material even in this stage, however applications - * should be aware that it may be impossible to guarantee that the - * key material is not recoverable in such cases. - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * An unexpected condition which is not a storage corruption or - * a communication failure occurred. The cryptoprocessor may have - * been compromised. - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_destroy_key(mbedtls_svc_key_id_t key); - -/**@}*/ - -/** \defgroup import_export Key import and export - * @{ - */ - -/** - * \brief Import a key in binary format. - * - * This function supports any output from psa_export_key(). Refer to the - * documentation of psa_export_public_key() for the format of public keys - * and to the documentation of psa_export_key() for the format for - * other key types. - * - * The key data determines the key size. The attributes may optionally - * specify a key size; in this case it must match the size determined - * from the key data. A key size of 0 in \p attributes indicates that - * the key size is solely determined by the key data. - * - * Implementations must reject an attempt to import a key of size 0. - * - * This specification supports a single format for each key type. - * Implementations may support other formats as long as the standard - * format is supported. Implementations that support other formats - * should ensure that the formats are clearly unambiguous so as to - * minimize the risk that an invalid input is accidentally interpreted - * according to a different format. - * - * \param[in] attributes The attributes for the new key. - * The key size is always determined from the - * \p data buffer. - * If the key size in \p attributes is nonzero, - * it must be equal to the size from \p data. - * \param[out] key On success, an identifier to the newly created key. - * For persistent keys, this is the key identifier - * defined in \p attributes. - * \c 0 on failure. - * \param[in] data Buffer containing the key data. The content of this - * buffer is interpreted according to the type declared - * in \p attributes. - * All implementations must support at least the format - * described in the documentation - * of psa_export_key() or psa_export_public_key() for - * the chosen type. Implementations may allow other - * formats, but should be conservative: implementations - * should err on the side of rejecting content if it - * may be erroneous (e.g. wrong type or truncated data). - * \param data_length Size of the \p data buffer in bytes. - * - * \retval #PSA_SUCCESS - * Success. - * If the key is persistent, the key material and the key's metadata - * have been saved to persistent storage. - * \retval #PSA_ERROR_ALREADY_EXISTS - * This is an attempt to create a persistent key, and there is - * already a persistent key with the given identifier. - * \retval #PSA_ERROR_NOT_SUPPORTED - * The key type or key size is not supported, either by the - * implementation in general or in this particular persistent location. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The key attributes, as a whole, are invalid. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The key data is not correctly formatted. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The size in \p attributes is nonzero and does not match the size - * of the key data. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_INSUFFICIENT_STORAGE - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_DATA_CORRUPT - * \retval #PSA_ERROR_DATA_INVALID - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_import_key(const psa_key_attributes_t *attributes, - const uint8_t *data, - size_t data_length, - mbedtls_svc_key_id_t *key); - - - -/** - * \brief Export a key in binary format. - * - * The output of this function can be passed to psa_import_key() to - * create an equivalent object. - * - * If the implementation of psa_import_key() supports other formats - * beyond the format specified here, the output from psa_export_key() - * must use the representation specified here, not the original - * representation. - * - * For standard key types, the output format is as follows: - * - * - For symmetric keys (including MAC keys), the format is the - * raw bytes of the key. - * - For DES, the key data consists of 8 bytes. The parity bits must be - * correct. - * - For Triple-DES, the format is the concatenation of the - * two or three DES keys. - * - For RSA key pairs (#PSA_KEY_TYPE_RSA_KEY_PAIR), the format - * is the non-encrypted DER encoding of the representation defined by - * PKCS\#1 (RFC 8017) as `RSAPrivateKey`, version 0. - * ``` - * RSAPrivateKey ::= SEQUENCE { - * version INTEGER, -- must be 0 - * modulus INTEGER, -- n - * publicExponent INTEGER, -- e - * privateExponent INTEGER, -- d - * prime1 INTEGER, -- p - * prime2 INTEGER, -- q - * exponent1 INTEGER, -- d mod (p-1) - * exponent2 INTEGER, -- d mod (q-1) - * coefficient INTEGER, -- (inverse of q) mod p - * } - * ``` - * - For elliptic curve key pairs (key types for which - * #PSA_KEY_TYPE_IS_ECC_KEY_PAIR is true), the format is - * a representation of the private value as a `ceiling(m/8)`-byte string - * where `m` is the bit size associated with the curve, i.e. the bit size - * of the order of the curve's coordinate field. This byte string is - * in little-endian order for Montgomery curves (curve types - * `PSA_ECC_FAMILY_CURVEXXX`), and in big-endian order for Weierstrass - * curves (curve types `PSA_ECC_FAMILY_SECTXXX`, `PSA_ECC_FAMILY_SECPXXX` - * and `PSA_ECC_FAMILY_BRAINPOOL_PXXX`). - * For Weierstrass curves, this is the content of the `privateKey` field of - * the `ECPrivateKey` format defined by RFC 5915. For Montgomery curves, - * the format is defined by RFC 7748, and output is masked according to ยง5. - * For twisted Edwards curves, the private key is as defined by RFC 8032 - * (a 32-byte string for Edwards25519, a 57-byte string for Edwards448). - * - For Diffie-Hellman key exchange key pairs (key types for which - * #PSA_KEY_TYPE_IS_DH_KEY_PAIR is true), the - * format is the representation of the private key `x` as a big-endian byte - * string. The length of the byte string is the private key size in bytes - * (leading zeroes are not stripped). - * - For public keys (key types for which #PSA_KEY_TYPE_IS_PUBLIC_KEY is - * true), the format is the same as for psa_export_public_key(). - * - * The policy on the key must have the usage flag #PSA_KEY_USAGE_EXPORT set. - * - * \param key Identifier of the key to export. It must allow the - * usage #PSA_KEY_USAGE_EXPORT, unless it is a public - * key. - * \param[out] data Buffer where the key data is to be written. - * \param data_size Size of the \p data buffer in bytes. - * \param[out] data_length On success, the number of bytes - * that make up the key data. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * The key does not have the #PSA_KEY_USAGE_EXPORT flag. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p data buffer is too small. You can determine a - * sufficient buffer size by calling - * #PSA_EXPORT_KEY_OUTPUT_SIZE(\c type, \c bits) - * where \c type is the key type - * and \c bits is the key size in bits. - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_export_key(mbedtls_svc_key_id_t key, - uint8_t *data, - size_t data_size, - size_t *data_length); - -/** - * \brief Export a public key or the public part of a key pair in binary format. - * - * The output of this function can be passed to psa_import_key() to - * create an object that is equivalent to the public key. - * - * This specification supports a single format for each key type. - * Implementations may support other formats as long as the standard - * format is supported. Implementations that support other formats - * should ensure that the formats are clearly unambiguous so as to - * minimize the risk that an invalid input is accidentally interpreted - * according to a different format. - * - * For standard key types, the output format is as follows: - * - For RSA public keys (#PSA_KEY_TYPE_RSA_PUBLIC_KEY), the DER encoding of - * the representation defined by RFC 3279 §2.3.1 as `RSAPublicKey`. - * ``` - * RSAPublicKey ::= SEQUENCE { - * modulus INTEGER, -- n - * publicExponent INTEGER } -- e - * ``` - * - For elliptic curve keys on a twisted Edwards curve (key types for which - * #PSA_KEY_TYPE_IS_ECC_PUBLIC_KEY is true and #PSA_KEY_TYPE_ECC_GET_FAMILY - * returns #PSA_ECC_FAMILY_TWISTED_EDWARDS), the public key is as defined - * by RFC 8032 - * (a 32-byte string for Edwards25519, a 57-byte string for Edwards448). - * - For other elliptic curve public keys (key types for which - * #PSA_KEY_TYPE_IS_ECC_PUBLIC_KEY is true), the format is the uncompressed - * representation defined by SEC1 §2.3.3 as the content of an ECPoint. - * Let `m` be the bit size associated with the curve, i.e. the bit size of - * `q` for a curve over `F_q`. The representation consists of: - * - The byte 0x04; - * - `x_P` as a `ceiling(m/8)`-byte string, big-endian; - * - `y_P` as a `ceiling(m/8)`-byte string, big-endian. - * - For Diffie-Hellman key exchange public keys (key types for which - * #PSA_KEY_TYPE_IS_DH_PUBLIC_KEY is true), - * the format is the representation of the public key `y = g^x mod p` as a - * big-endian byte string. The length of the byte string is the length of the - * base prime `p` in bytes. - * - * Exporting a public key object or the public part of a key pair is - * always permitted, regardless of the key's usage flags. - * - * \param key Identifier of the key to export. - * \param[out] data Buffer where the key data is to be written. - * \param data_size Size of the \p data buffer in bytes. - * \param[out] data_length On success, the number of bytes - * that make up the key data. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The key is neither a public key nor a key pair. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p data buffer is too small. You can determine a - * sufficient buffer size by calling - * #PSA_EXPORT_KEY_OUTPUT_SIZE(#PSA_KEY_TYPE_PUBLIC_KEY_OF_KEY_PAIR(\c type), \c bits) - * where \c type is the key type - * and \c bits is the key size in bits. - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_export_public_key(mbedtls_svc_key_id_t key, - uint8_t *data, - size_t data_size, - size_t *data_length); - - - -/**@}*/ - -/** \defgroup hash Message digests - * @{ - */ - -/** Calculate the hash (digest) of a message. - * - * \note To verify the hash of a message against an - * expected value, use psa_hash_compare() instead. - * - * \param alg The hash algorithm to compute (\c PSA_ALG_XXX value - * such that #PSA_ALG_IS_HASH(\p alg) is true). - * \param[in] input Buffer containing the message to hash. - * \param input_length Size of the \p input buffer in bytes. - * \param[out] hash Buffer where the hash is to be written. - * \param hash_size Size of the \p hash buffer in bytes. - * \param[out] hash_length On success, the number of bytes - * that make up the hash value. This is always - * #PSA_HASH_LENGTH(\p alg). - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not supported or is not a hash algorithm. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * \p hash_size is too small - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_hash_compute(psa_algorithm_t alg, - const uint8_t *input, - size_t input_length, - uint8_t *hash, - size_t hash_size, - size_t *hash_length); - -/** Calculate the hash (digest) of a message and compare it with a - * reference value. - * - * \param alg The hash algorithm to compute (\c PSA_ALG_XXX value - * such that #PSA_ALG_IS_HASH(\p alg) is true). - * \param[in] input Buffer containing the message to hash. - * \param input_length Size of the \p input buffer in bytes. - * \param[out] hash Buffer containing the expected hash value. - * \param hash_length Size of the \p hash buffer in bytes. - * - * \retval #PSA_SUCCESS - * The expected hash is identical to the actual hash of the input. - * \retval #PSA_ERROR_INVALID_SIGNATURE - * The hash of the message was calculated successfully, but it - * differs from the expected hash. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not supported or is not a hash algorithm. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p input_length or \p hash_length do not match the hash size for \p alg - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_hash_compare(psa_algorithm_t alg, - const uint8_t *input, - size_t input_length, - const uint8_t *hash, - size_t hash_length); - -/** The type of the state data structure for multipart hash operations. - * - * Before calling any function on a hash operation object, the application must - * initialize it by any of the following means: - * - Set the structure to all-bits-zero, for example: - * \code - * psa_hash_operation_t operation; - * memset(&operation, 0, sizeof(operation)); - * \endcode - * - Initialize the structure to logical zero values, for example: - * \code - * psa_hash_operation_t operation = {0}; - * \endcode - * - Initialize the structure to the initializer #PSA_HASH_OPERATION_INIT, - * for example: - * \code - * psa_hash_operation_t operation = PSA_HASH_OPERATION_INIT; - * \endcode - * - Assign the result of the function psa_hash_operation_init() - * to the structure, for example: - * \code - * psa_hash_operation_t operation; - * operation = psa_hash_operation_init(); - * \endcode - * - * This is an implementation-defined \c struct. Applications should not - * make any assumptions about the content of this structure except - * as directed by the documentation of a specific implementation. */ -typedef struct psa_hash_operation_s psa_hash_operation_t; - -/** \def PSA_HASH_OPERATION_INIT - * - * This macro returns a suitable initializer for a hash operation object - * of type #psa_hash_operation_t. - */ -#ifdef __DOXYGEN_ONLY__ -/* This is an example definition for documentation purposes. - * Implementations should define a suitable value in `crypto_struct.h`. - */ -#define PSA_HASH_OPERATION_INIT {0} -#endif - -/** Return an initial value for a hash operation object. - */ -static psa_hash_operation_t psa_hash_operation_init(void); - -/** Set up a multipart hash operation. - * - * The sequence of operations to calculate a hash (message digest) - * is as follows: - * -# Allocate an operation object which will be passed to all the functions - * listed here. - * -# Initialize the operation object with one of the methods described in the - * documentation for #psa_hash_operation_t, e.g. #PSA_HASH_OPERATION_INIT. - * -# Call psa_hash_setup() to specify the algorithm. - * -# Call psa_hash_update() zero, one or more times, passing a fragment - * of the message each time. The hash that is calculated is the hash - * of the concatenation of these messages in order. - * -# To calculate the hash, call psa_hash_finish(). - * To compare the hash with an expected value, call psa_hash_verify(). - * - * If an error occurs at any step after a call to psa_hash_setup(), the - * operation will need to be reset by a call to psa_hash_abort(). The - * application may call psa_hash_abort() at any time after the operation - * has been initialized. - * - * After a successful call to psa_hash_setup(), the application must - * eventually terminate the operation. The following events terminate an - * operation: - * - A successful call to psa_hash_finish() or psa_hash_verify(). - * - A call to psa_hash_abort(). - * - * \param[in,out] operation The operation object to set up. It must have - * been initialized as per the documentation for - * #psa_hash_operation_t and not yet in use. - * \param alg The hash algorithm to compute (\c PSA_ALG_XXX value - * such that #PSA_ALG_IS_HASH(\p alg) is true). - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not a supported hash algorithm. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p alg is not a hash algorithm. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be inactive). - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_hash_setup(psa_hash_operation_t *operation, - psa_algorithm_t alg); - -/** Add a message fragment to a multipart hash operation. - * - * The application must call psa_hash_setup() before calling this function. - * - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_hash_abort(). - * - * \param[in,out] operation Active hash operation. - * \param[in] input Buffer containing the message fragment to hash. - * \param input_length Size of the \p input buffer in bytes. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it muct be active). - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_hash_update(psa_hash_operation_t *operation, - const uint8_t *input, - size_t input_length); - -/** Finish the calculation of the hash of a message. - * - * The application must call psa_hash_setup() before calling this function. - * This function calculates the hash of the message formed by concatenating - * the inputs passed to preceding calls to psa_hash_update(). - * - * When this function returns successfuly, the operation becomes inactive. - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_hash_abort(). - * - * \warning Applications should not call this function if they expect - * a specific value for the hash. Call psa_hash_verify() instead. - * Beware that comparing integrity or authenticity data such as - * hash values with a function such as \c memcmp is risky - * because the time taken by the comparison may leak information - * about the hashed data which could allow an attacker to guess - * a valid hash and thereby bypass security controls. - * - * \param[in,out] operation Active hash operation. - * \param[out] hash Buffer where the hash is to be written. - * \param hash_size Size of the \p hash buffer in bytes. - * \param[out] hash_length On success, the number of bytes - * that make up the hash value. This is always - * #PSA_HASH_LENGTH(\c alg) where \c alg is the - * hash algorithm that is calculated. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be active). - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p hash buffer is too small. You can determine a - * sufficient buffer size by calling #PSA_HASH_LENGTH(\c alg) - * where \c alg is the hash algorithm that is calculated. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_hash_finish(psa_hash_operation_t *operation, - uint8_t *hash, - size_t hash_size, - size_t *hash_length); - -/** Finish the calculation of the hash of a message and compare it with - * an expected value. - * - * The application must call psa_hash_setup() before calling this function. - * This function calculates the hash of the message formed by concatenating - * the inputs passed to preceding calls to psa_hash_update(). It then - * compares the calculated hash with the expected hash passed as a - * parameter to this function. - * - * When this function returns successfuly, the operation becomes inactive. - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_hash_abort(). - * - * \note Implementations shall make the best effort to ensure that the - * comparison between the actual hash and the expected hash is performed - * in constant time. - * - * \param[in,out] operation Active hash operation. - * \param[in] hash Buffer containing the expected hash value. - * \param hash_length Size of the \p hash buffer in bytes. - * - * \retval #PSA_SUCCESS - * The expected hash is identical to the actual hash of the message. - * \retval #PSA_ERROR_INVALID_SIGNATURE - * The hash of the message was calculated successfully, but it - * differs from the expected hash. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be active). - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_hash_verify(psa_hash_operation_t *operation, - const uint8_t *hash, - size_t hash_length); - -/** Abort a hash operation. - * - * Aborting an operation frees all associated resources except for the - * \p operation structure itself. Once aborted, the operation object - * can be reused for another operation by calling - * psa_hash_setup() again. - * - * You may call this function any time after the operation object has - * been initialized by one of the methods described in #psa_hash_operation_t. - * - * In particular, calling psa_hash_abort() after the operation has been - * terminated by a call to psa_hash_abort(), psa_hash_finish() or - * psa_hash_verify() is safe and has no effect. - * - * \param[in,out] operation Initialized hash operation. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_hash_abort(psa_hash_operation_t *operation); - -/** Clone a hash operation. - * - * This function copies the state of an ongoing hash operation to - * a new operation object. In other words, this function is equivalent - * to calling psa_hash_setup() on \p target_operation with the same - * algorithm that \p source_operation was set up for, then - * psa_hash_update() on \p target_operation with the same input that - * that was passed to \p source_operation. After this function returns, the - * two objects are independent, i.e. subsequent calls involving one of - * the objects do not affect the other object. - * - * \param[in] source_operation The active hash operation to clone. - * \param[in,out] target_operation The operation object to set up. - * It must be initialized but not active. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_BAD_STATE - * The \p source_operation state is not valid (it must be active). - * \retval #PSA_ERROR_BAD_STATE - * The \p target_operation state is not valid (it must be inactive). - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_hash_clone(const psa_hash_operation_t *source_operation, - psa_hash_operation_t *target_operation); - -/**@}*/ - -/** \defgroup MAC Message authentication codes - * @{ - */ - -/** Calculate the MAC (message authentication code) of a message. - * - * \note To verify the MAC of a message against an - * expected value, use psa_mac_verify() instead. - * Beware that comparing integrity or authenticity data such as - * MAC values with a function such as \c memcmp is risky - * because the time taken by the comparison may leak information - * about the MAC value which could allow an attacker to guess - * a valid MAC and thereby bypass security controls. - * - * \param key Identifier of the key to use for the operation. It - * must allow the usage PSA_KEY_USAGE_SIGN_MESSAGE. - * \param alg The MAC algorithm to compute (\c PSA_ALG_XXX value - * such that #PSA_ALG_IS_MAC(\p alg) is true). - * \param[in] input Buffer containing the input message. - * \param input_length Size of the \p input buffer in bytes. - * \param[out] mac Buffer where the MAC value is to be written. - * \param mac_size Size of the \p mac buffer in bytes. - * \param[out] mac_length On success, the number of bytes - * that make up the MAC value. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p key is not compatible with \p alg. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not supported or is not a MAC algorithm. - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * \p mac_size is too small - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * The key could not be retrieved from storage. - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_mac_compute(mbedtls_svc_key_id_t key, - psa_algorithm_t alg, - const uint8_t *input, - size_t input_length, - uint8_t *mac, - size_t mac_size, - size_t *mac_length); - -/** Calculate the MAC of a message and compare it with a reference value. - * - * \param key Identifier of the key to use for the operation. It - * must allow the usage PSA_KEY_USAGE_VERIFY_MESSAGE. - * \param alg The MAC algorithm to compute (\c PSA_ALG_XXX value - * such that #PSA_ALG_IS_MAC(\p alg) is true). - * \param[in] input Buffer containing the input message. - * \param input_length Size of the \p input buffer in bytes. - * \param[out] mac Buffer containing the expected MAC value. - * \param mac_length Size of the \p mac buffer in bytes. - * - * \retval #PSA_SUCCESS - * The expected MAC is identical to the actual MAC of the input. - * \retval #PSA_ERROR_INVALID_SIGNATURE - * The MAC of the message was calculated successfully, but it - * differs from the expected value. - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p key is not compatible with \p alg. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not supported or is not a MAC algorithm. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * The key could not be retrieved from storage. - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_mac_verify(mbedtls_svc_key_id_t key, - psa_algorithm_t alg, - const uint8_t *input, - size_t input_length, - const uint8_t *mac, - size_t mac_length); - -/** The type of the state data structure for multipart MAC operations. - * - * Before calling any function on a MAC operation object, the application must - * initialize it by any of the following means: - * - Set the structure to all-bits-zero, for example: - * \code - * psa_mac_operation_t operation; - * memset(&operation, 0, sizeof(operation)); - * \endcode - * - Initialize the structure to logical zero values, for example: - * \code - * psa_mac_operation_t operation = {0}; - * \endcode - * - Initialize the structure to the initializer #PSA_MAC_OPERATION_INIT, - * for example: - * \code - * psa_mac_operation_t operation = PSA_MAC_OPERATION_INIT; - * \endcode - * - Assign the result of the function psa_mac_operation_init() - * to the structure, for example: - * \code - * psa_mac_operation_t operation; - * operation = psa_mac_operation_init(); - * \endcode - * - * This is an implementation-defined \c struct. Applications should not - * make any assumptions about the content of this structure except - * as directed by the documentation of a specific implementation. */ -typedef struct psa_mac_operation_s psa_mac_operation_t; - -/** \def PSA_MAC_OPERATION_INIT - * - * This macro returns a suitable initializer for a MAC operation object of type - * #psa_mac_operation_t. - */ -#ifdef __DOXYGEN_ONLY__ -/* This is an example definition for documentation purposes. - * Implementations should define a suitable value in `crypto_struct.h`. - */ -#define PSA_MAC_OPERATION_INIT {0} -#endif - -/** Return an initial value for a MAC operation object. - */ -static psa_mac_operation_t psa_mac_operation_init(void); - -/** Set up a multipart MAC calculation operation. - * - * This function sets up the calculation of the MAC - * (message authentication code) of a byte string. - * To verify the MAC of a message against an - * expected value, use psa_mac_verify_setup() instead. - * - * The sequence of operations to calculate a MAC is as follows: - * -# Allocate an operation object which will be passed to all the functions - * listed here. - * -# Initialize the operation object with one of the methods described in the - * documentation for #psa_mac_operation_t, e.g. #PSA_MAC_OPERATION_INIT. - * -# Call psa_mac_sign_setup() to specify the algorithm and key. - * -# Call psa_mac_update() zero, one or more times, passing a fragment - * of the message each time. The MAC that is calculated is the MAC - * of the concatenation of these messages in order. - * -# At the end of the message, call psa_mac_sign_finish() to finish - * calculating the MAC value and retrieve it. - * - * If an error occurs at any step after a call to psa_mac_sign_setup(), the - * operation will need to be reset by a call to psa_mac_abort(). The - * application may call psa_mac_abort() at any time after the operation - * has been initialized. - * - * After a successful call to psa_mac_sign_setup(), the application must - * eventually terminate the operation through one of the following methods: - * - A successful call to psa_mac_sign_finish(). - * - A call to psa_mac_abort(). - * - * \param[in,out] operation The operation object to set up. It must have - * been initialized as per the documentation for - * #psa_mac_operation_t and not yet in use. - * \param key Identifier of the key to use for the operation. It - * must remain valid until the operation terminates. - * It must allow the usage PSA_KEY_USAGE_SIGN_MESSAGE. - * \param alg The MAC algorithm to compute (\c PSA_ALG_XXX value - * such that #PSA_ALG_IS_MAC(\p alg) is true). - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p key is not compatible with \p alg. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not supported or is not a MAC algorithm. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * The key could not be retrieved from storage. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be inactive). - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_mac_sign_setup(psa_mac_operation_t *operation, - mbedtls_svc_key_id_t key, - psa_algorithm_t alg); - -/** Set up a multipart MAC verification operation. - * - * This function sets up the verification of the MAC - * (message authentication code) of a byte string against an expected value. - * - * The sequence of operations to verify a MAC is as follows: - * -# Allocate an operation object which will be passed to all the functions - * listed here. - * -# Initialize the operation object with one of the methods described in the - * documentation for #psa_mac_operation_t, e.g. #PSA_MAC_OPERATION_INIT. - * -# Call psa_mac_verify_setup() to specify the algorithm and key. - * -# Call psa_mac_update() zero, one or more times, passing a fragment - * of the message each time. The MAC that is calculated is the MAC - * of the concatenation of these messages in order. - * -# At the end of the message, call psa_mac_verify_finish() to finish - * calculating the actual MAC of the message and verify it against - * the expected value. - * - * If an error occurs at any step after a call to psa_mac_verify_setup(), the - * operation will need to be reset by a call to psa_mac_abort(). The - * application may call psa_mac_abort() at any time after the operation - * has been initialized. - * - * After a successful call to psa_mac_verify_setup(), the application must - * eventually terminate the operation through one of the following methods: - * - A successful call to psa_mac_verify_finish(). - * - A call to psa_mac_abort(). - * - * \param[in,out] operation The operation object to set up. It must have - * been initialized as per the documentation for - * #psa_mac_operation_t and not yet in use. - * \param key Identifier of the key to use for the operation. It - * must remain valid until the operation terminates. - * It must allow the usage - * PSA_KEY_USAGE_VERIFY_MESSAGE. - * \param alg The MAC algorithm to compute (\c PSA_ALG_XXX value - * such that #PSA_ALG_IS_MAC(\p alg) is true). - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \c key is not compatible with \c alg. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \c alg is not supported or is not a MAC algorithm. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * The key could not be retrieved from storage - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be inactive). - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_mac_verify_setup(psa_mac_operation_t *operation, - mbedtls_svc_key_id_t key, - psa_algorithm_t alg); - -/** Add a message fragment to a multipart MAC operation. - * - * The application must call psa_mac_sign_setup() or psa_mac_verify_setup() - * before calling this function. - * - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_mac_abort(). - * - * \param[in,out] operation Active MAC operation. - * \param[in] input Buffer containing the message fragment to add to - * the MAC calculation. - * \param input_length Size of the \p input buffer in bytes. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be active). - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_mac_update(psa_mac_operation_t *operation, - const uint8_t *input, - size_t input_length); - -/** Finish the calculation of the MAC of a message. - * - * The application must call psa_mac_sign_setup() before calling this function. - * This function calculates the MAC of the message formed by concatenating - * the inputs passed to preceding calls to psa_mac_update(). - * - * When this function returns successfuly, the operation becomes inactive. - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_mac_abort(). - * - * \warning Applications should not call this function if they expect - * a specific value for the MAC. Call psa_mac_verify_finish() instead. - * Beware that comparing integrity or authenticity data such as - * MAC values with a function such as \c memcmp is risky - * because the time taken by the comparison may leak information - * about the MAC value which could allow an attacker to guess - * a valid MAC and thereby bypass security controls. - * - * \param[in,out] operation Active MAC operation. - * \param[out] mac Buffer where the MAC value is to be written. - * \param mac_size Size of the \p mac buffer in bytes. - * \param[out] mac_length On success, the number of bytes - * that make up the MAC value. This is always - * #PSA_MAC_LENGTH(\c key_type, \c key_bits, \c alg) - * where \c key_type and \c key_bits are the type and - * bit-size respectively of the key and \c alg is the - * MAC algorithm that is calculated. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be an active mac sign - * operation). - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p mac buffer is too small. You can determine a - * sufficient buffer size by calling PSA_MAC_LENGTH(). - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_mac_sign_finish(psa_mac_operation_t *operation, - uint8_t *mac, - size_t mac_size, - size_t *mac_length); - -/** Finish the calculation of the MAC of a message and compare it with - * an expected value. - * - * The application must call psa_mac_verify_setup() before calling this function. - * This function calculates the MAC of the message formed by concatenating - * the inputs passed to preceding calls to psa_mac_update(). It then - * compares the calculated MAC with the expected MAC passed as a - * parameter to this function. - * - * When this function returns successfuly, the operation becomes inactive. - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_mac_abort(). - * - * \note Implementations shall make the best effort to ensure that the - * comparison between the actual MAC and the expected MAC is performed - * in constant time. - * - * \param[in,out] operation Active MAC operation. - * \param[in] mac Buffer containing the expected MAC value. - * \param mac_length Size of the \p mac buffer in bytes. - * - * \retval #PSA_SUCCESS - * The expected MAC is identical to the actual MAC of the message. - * \retval #PSA_ERROR_INVALID_SIGNATURE - * The MAC of the message was calculated successfully, but it - * differs from the expected MAC. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be an active mac verify - * operation). - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_mac_verify_finish(psa_mac_operation_t *operation, - const uint8_t *mac, - size_t mac_length); - -/** Abort a MAC operation. - * - * Aborting an operation frees all associated resources except for the - * \p operation structure itself. Once aborted, the operation object - * can be reused for another operation by calling - * psa_mac_sign_setup() or psa_mac_verify_setup() again. - * - * You may call this function any time after the operation object has - * been initialized by one of the methods described in #psa_mac_operation_t. - * - * In particular, calling psa_mac_abort() after the operation has been - * terminated by a call to psa_mac_abort(), psa_mac_sign_finish() or - * psa_mac_verify_finish() is safe and has no effect. - * - * \param[in,out] operation Initialized MAC operation. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_mac_abort(psa_mac_operation_t *operation); - -/**@}*/ - -/** \defgroup cipher Symmetric ciphers - * @{ - */ - -/** Encrypt a message using a symmetric cipher. - * - * This function encrypts a message with a random IV (initialization - * vector). Use the multipart operation interface with a - * #psa_cipher_operation_t object to provide other forms of IV. - * - * \param key Identifier of the key to use for the operation. - * It must allow the usage #PSA_KEY_USAGE_ENCRYPT. - * \param alg The cipher algorithm to compute - * (\c PSA_ALG_XXX value such that - * #PSA_ALG_IS_CIPHER(\p alg) is true). - * \param[in] input Buffer containing the message to encrypt. - * \param input_length Size of the \p input buffer in bytes. - * \param[out] output Buffer where the output is to be written. - * The output contains the IV followed by - * the ciphertext proper. - * \param output_size Size of the \p output buffer in bytes. - * \param[out] output_length On success, the number of bytes - * that make up the output. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p key is not compatible with \p alg. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not supported or is not a cipher algorithm. - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_cipher_encrypt(mbedtls_svc_key_id_t key, - psa_algorithm_t alg, - const uint8_t *input, - size_t input_length, - uint8_t *output, - size_t output_size, - size_t *output_length); - -/** Decrypt a message using a symmetric cipher. - * - * This function decrypts a message encrypted with a symmetric cipher. - * - * \param key Identifier of the key to use for the operation. - * It must remain valid until the operation - * terminates. It must allow the usage - * #PSA_KEY_USAGE_DECRYPT. - * \param alg The cipher algorithm to compute - * (\c PSA_ALG_XXX value such that - * #PSA_ALG_IS_CIPHER(\p alg) is true). - * \param[in] input Buffer containing the message to decrypt. - * This consists of the IV followed by the - * ciphertext proper. - * \param input_length Size of the \p input buffer in bytes. - * \param[out] output Buffer where the plaintext is to be written. - * \param output_size Size of the \p output buffer in bytes. - * \param[out] output_length On success, the number of bytes - * that make up the output. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p key is not compatible with \p alg. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not supported or is not a cipher algorithm. - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_cipher_decrypt(mbedtls_svc_key_id_t key, - psa_algorithm_t alg, - const uint8_t *input, - size_t input_length, - uint8_t *output, - size_t output_size, - size_t *output_length); - -/** The type of the state data structure for multipart cipher operations. - * - * Before calling any function on a cipher operation object, the application - * must initialize it by any of the following means: - * - Set the structure to all-bits-zero, for example: - * \code - * psa_cipher_operation_t operation; - * memset(&operation, 0, sizeof(operation)); - * \endcode - * - Initialize the structure to logical zero values, for example: - * \code - * psa_cipher_operation_t operation = {0}; - * \endcode - * - Initialize the structure to the initializer #PSA_CIPHER_OPERATION_INIT, - * for example: - * \code - * psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT; - * \endcode - * - Assign the result of the function psa_cipher_operation_init() - * to the structure, for example: - * \code - * psa_cipher_operation_t operation; - * operation = psa_cipher_operation_init(); - * \endcode - * - * This is an implementation-defined \c struct. Applications should not - * make any assumptions about the content of this structure except - * as directed by the documentation of a specific implementation. */ -typedef struct psa_cipher_operation_s psa_cipher_operation_t; - -/** \def PSA_CIPHER_OPERATION_INIT - * - * This macro returns a suitable initializer for a cipher operation object of - * type #psa_cipher_operation_t. - */ -#ifdef __DOXYGEN_ONLY__ -/* This is an example definition for documentation purposes. - * Implementations should define a suitable value in `crypto_struct.h`. - */ -#define PSA_CIPHER_OPERATION_INIT {0} -#endif - -/** Return an initial value for a cipher operation object. - */ -static psa_cipher_operation_t psa_cipher_operation_init(void); - -/** Set the key for a multipart symmetric encryption operation. - * - * The sequence of operations to encrypt a message with a symmetric cipher - * is as follows: - * -# Allocate an operation object which will be passed to all the functions - * listed here. - * -# Initialize the operation object with one of the methods described in the - * documentation for #psa_cipher_operation_t, e.g. - * #PSA_CIPHER_OPERATION_INIT. - * -# Call psa_cipher_encrypt_setup() to specify the algorithm and key. - * -# Call either psa_cipher_generate_iv() or psa_cipher_set_iv() to - * generate or set the IV (initialization vector). You should use - * psa_cipher_generate_iv() unless the protocol you are implementing - * requires a specific IV value. - * -# Call psa_cipher_update() zero, one or more times, passing a fragment - * of the message each time. - * -# Call psa_cipher_finish(). - * - * If an error occurs at any step after a call to psa_cipher_encrypt_setup(), - * the operation will need to be reset by a call to psa_cipher_abort(). The - * application may call psa_cipher_abort() at any time after the operation - * has been initialized. - * - * After a successful call to psa_cipher_encrypt_setup(), the application must - * eventually terminate the operation. The following events terminate an - * operation: - * - A successful call to psa_cipher_finish(). - * - A call to psa_cipher_abort(). - * - * \param[in,out] operation The operation object to set up. It must have - * been initialized as per the documentation for - * #psa_cipher_operation_t and not yet in use. - * \param key Identifier of the key to use for the operation. - * It must remain valid until the operation - * terminates. It must allow the usage - * #PSA_KEY_USAGE_ENCRYPT. - * \param alg The cipher algorithm to compute - * (\c PSA_ALG_XXX value such that - * #PSA_ALG_IS_CIPHER(\p alg) is true). - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p key is not compatible with \p alg. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not supported or is not a cipher algorithm. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be inactive). - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_cipher_encrypt_setup(psa_cipher_operation_t *operation, - mbedtls_svc_key_id_t key, - psa_algorithm_t alg); - -/** Set the key for a multipart symmetric decryption operation. - * - * The sequence of operations to decrypt a message with a symmetric cipher - * is as follows: - * -# Allocate an operation object which will be passed to all the functions - * listed here. - * -# Initialize the operation object with one of the methods described in the - * documentation for #psa_cipher_operation_t, e.g. - * #PSA_CIPHER_OPERATION_INIT. - * -# Call psa_cipher_decrypt_setup() to specify the algorithm and key. - * -# Call psa_cipher_set_iv() with the IV (initialization vector) for the - * decryption. If the IV is prepended to the ciphertext, you can call - * psa_cipher_update() on a buffer containing the IV followed by the - * beginning of the message. - * -# Call psa_cipher_update() zero, one or more times, passing a fragment - * of the message each time. - * -# Call psa_cipher_finish(). - * - * If an error occurs at any step after a call to psa_cipher_decrypt_setup(), - * the operation will need to be reset by a call to psa_cipher_abort(). The - * application may call psa_cipher_abort() at any time after the operation - * has been initialized. - * - * After a successful call to psa_cipher_decrypt_setup(), the application must - * eventually terminate the operation. The following events terminate an - * operation: - * - A successful call to psa_cipher_finish(). - * - A call to psa_cipher_abort(). - * - * \param[in,out] operation The operation object to set up. It must have - * been initialized as per the documentation for - * #psa_cipher_operation_t and not yet in use. - * \param key Identifier of the key to use for the operation. - * It must remain valid until the operation - * terminates. It must allow the usage - * #PSA_KEY_USAGE_DECRYPT. - * \param alg The cipher algorithm to compute - * (\c PSA_ALG_XXX value such that - * #PSA_ALG_IS_CIPHER(\p alg) is true). - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p key is not compatible with \p alg. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not supported or is not a cipher algorithm. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be inactive). - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_cipher_decrypt_setup(psa_cipher_operation_t *operation, - mbedtls_svc_key_id_t key, - psa_algorithm_t alg); - -/** Generate an IV for a symmetric encryption operation. - * - * This function generates a random IV (initialization vector), nonce - * or initial counter value for the encryption operation as appropriate - * for the chosen algorithm, key type and key size. - * - * The application must call psa_cipher_encrypt_setup() before - * calling this function. - * - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_cipher_abort(). - * - * \param[in,out] operation Active cipher operation. - * \param[out] iv Buffer where the generated IV is to be written. - * \param iv_size Size of the \p iv buffer in bytes. - * \param[out] iv_length On success, the number of bytes of the - * generated IV. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be active, with no IV set). - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p iv buffer is too small. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_cipher_generate_iv(psa_cipher_operation_t *operation, - uint8_t *iv, - size_t iv_size, - size_t *iv_length); - -/** Set the IV for a symmetric encryption or decryption operation. - * - * This function sets the IV (initialization vector), nonce - * or initial counter value for the encryption or decryption operation. - * - * The application must call psa_cipher_encrypt_setup() before - * calling this function. - * - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_cipher_abort(). - * - * \note When encrypting, applications should use psa_cipher_generate_iv() - * instead of this function, unless implementing a protocol that requires - * a non-random IV. - * - * \param[in,out] operation Active cipher operation. - * \param[in] iv Buffer containing the IV to use. - * \param iv_length Size of the IV in bytes. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be an active cipher - * encrypt operation, with no IV set). - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The size of \p iv is not acceptable for the chosen algorithm, - * or the chosen algorithm does not use an IV. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_cipher_set_iv(psa_cipher_operation_t *operation, - const uint8_t *iv, - size_t iv_length); - -/** Encrypt or decrypt a message fragment in an active cipher operation. - * - * Before calling this function, you must: - * 1. Call either psa_cipher_encrypt_setup() or psa_cipher_decrypt_setup(). - * The choice of setup function determines whether this function - * encrypts or decrypts its input. - * 2. If the algorithm requires an IV, call psa_cipher_generate_iv() - * (recommended when encrypting) or psa_cipher_set_iv(). - * - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_cipher_abort(). - * - * \param[in,out] operation Active cipher operation. - * \param[in] input Buffer containing the message fragment to - * encrypt or decrypt. - * \param input_length Size of the \p input buffer in bytes. - * \param[out] output Buffer where the output is to be written. - * \param output_size Size of the \p output buffer in bytes. - * \param[out] output_length On success, the number of bytes - * that make up the returned output. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be active, with an IV set - * if required for the algorithm). - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p output buffer is too small. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_cipher_update(psa_cipher_operation_t *operation, - const uint8_t *input, - size_t input_length, - uint8_t *output, - size_t output_size, - size_t *output_length); - -/** Finish encrypting or decrypting a message in a cipher operation. - * - * The application must call psa_cipher_encrypt_setup() or - * psa_cipher_decrypt_setup() before calling this function. The choice - * of setup function determines whether this function encrypts or - * decrypts its input. - * - * This function finishes the encryption or decryption of the message - * formed by concatenating the inputs passed to preceding calls to - * psa_cipher_update(). - * - * When this function returns successfuly, the operation becomes inactive. - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_cipher_abort(). - * - * \param[in,out] operation Active cipher operation. - * \param[out] output Buffer where the output is to be written. - * \param output_size Size of the \p output buffer in bytes. - * \param[out] output_length On success, the number of bytes - * that make up the returned output. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The total input size passed to this operation is not valid for - * this particular algorithm. For example, the algorithm is a based - * on block cipher and requires a whole number of blocks, but the - * total input size is not a multiple of the block size. - * \retval #PSA_ERROR_INVALID_PADDING - * This is a decryption operation for an algorithm that includes - * padding, and the ciphertext does not contain valid padding. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be active, with an IV set - * if required for the algorithm). - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p output buffer is too small. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_cipher_finish(psa_cipher_operation_t *operation, - uint8_t *output, - size_t output_size, - size_t *output_length); - -/** Abort a cipher operation. - * - * Aborting an operation frees all associated resources except for the - * \p operation structure itself. Once aborted, the operation object - * can be reused for another operation by calling - * psa_cipher_encrypt_setup() or psa_cipher_decrypt_setup() again. - * - * You may call this function any time after the operation object has - * been initialized as described in #psa_cipher_operation_t. - * - * In particular, calling psa_cipher_abort() after the operation has been - * terminated by a call to psa_cipher_abort() or psa_cipher_finish() - * is safe and has no effect. - * - * \param[in,out] operation Initialized cipher operation. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_cipher_abort(psa_cipher_operation_t *operation); - -/**@}*/ - -/** \defgroup aead Authenticated encryption with associated data (AEAD) - * @{ - */ - -/** Process an authenticated encryption operation. - * - * \param key Identifier of the key to use for the - * operation. It must allow the usage - * #PSA_KEY_USAGE_ENCRYPT. - * \param alg The AEAD algorithm to compute - * (\c PSA_ALG_XXX value such that - * #PSA_ALG_IS_AEAD(\p alg) is true). - * \param[in] nonce Nonce or IV to use. - * \param nonce_length Size of the \p nonce buffer in bytes. - * \param[in] additional_data Additional data that will be authenticated - * but not encrypted. - * \param additional_data_length Size of \p additional_data in bytes. - * \param[in] plaintext Data that will be authenticated and - * encrypted. - * \param plaintext_length Size of \p plaintext in bytes. - * \param[out] ciphertext Output buffer for the authenticated and - * encrypted data. The additional data is not - * part of this output. For algorithms where the - * encrypted data and the authentication tag - * are defined as separate outputs, the - * authentication tag is appended to the - * encrypted data. - * \param ciphertext_size Size of the \p ciphertext buffer in bytes. - * This must be appropriate for the selected - * algorithm and key: - * - A sufficient output size is - * #PSA_AEAD_ENCRYPT_OUTPUT_SIZE(\c key_type, - * \p alg, \p plaintext_length) where - * \c key_type is the type of \p key. - * - #PSA_AEAD_ENCRYPT_OUTPUT_MAX_SIZE(\p - * plaintext_length) evaluates to the maximum - * ciphertext size of any supported AEAD - * encryption. - * \param[out] ciphertext_length On success, the size of the output - * in the \p ciphertext buffer. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p key is not compatible with \p alg. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not supported or is not an AEAD algorithm. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * \p ciphertext_size is too small. - * #PSA_AEAD_ENCRYPT_OUTPUT_SIZE(\c key_type, \p alg, - * \p plaintext_length) or - * #PSA_AEAD_ENCRYPT_OUTPUT_MAX_SIZE(\p plaintext_length) can be used to - * determine the required buffer size. - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_aead_encrypt(mbedtls_svc_key_id_t key, - psa_algorithm_t alg, - const uint8_t *nonce, - size_t nonce_length, - const uint8_t *additional_data, - size_t additional_data_length, - const uint8_t *plaintext, - size_t plaintext_length, - uint8_t *ciphertext, - size_t ciphertext_size, - size_t *ciphertext_length); - -/** Process an authenticated decryption operation. - * - * \param key Identifier of the key to use for the - * operation. It must allow the usage - * #PSA_KEY_USAGE_DECRYPT. - * \param alg The AEAD algorithm to compute - * (\c PSA_ALG_XXX value such that - * #PSA_ALG_IS_AEAD(\p alg) is true). - * \param[in] nonce Nonce or IV to use. - * \param nonce_length Size of the \p nonce buffer in bytes. - * \param[in] additional_data Additional data that has been authenticated - * but not encrypted. - * \param additional_data_length Size of \p additional_data in bytes. - * \param[in] ciphertext Data that has been authenticated and - * encrypted. For algorithms where the - * encrypted data and the authentication tag - * are defined as separate inputs, the buffer - * must contain the encrypted data followed - * by the authentication tag. - * \param ciphertext_length Size of \p ciphertext in bytes. - * \param[out] plaintext Output buffer for the decrypted data. - * \param plaintext_size Size of the \p plaintext buffer in bytes. - * This must be appropriate for the selected - * algorithm and key: - * - A sufficient output size is - * #PSA_AEAD_DECRYPT_OUTPUT_SIZE(\c key_type, - * \p alg, \p ciphertext_length) where - * \c key_type is the type of \p key. - * - #PSA_AEAD_DECRYPT_OUTPUT_MAX_SIZE(\p - * ciphertext_length) evaluates to the maximum - * plaintext size of any supported AEAD - * decryption. - * \param[out] plaintext_length On success, the size of the output - * in the \p plaintext buffer. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_INVALID_SIGNATURE - * The ciphertext is not authentic. - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p key is not compatible with \p alg. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not supported or is not an AEAD algorithm. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * \p plaintext_size is too small. - * #PSA_AEAD_DECRYPT_OUTPUT_SIZE(\c key_type, \p alg, - * \p ciphertext_length) or - * #PSA_AEAD_DECRYPT_OUTPUT_MAX_SIZE(\p ciphertext_length) can be used - * to determine the required buffer size. - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_aead_decrypt(mbedtls_svc_key_id_t key, - psa_algorithm_t alg, - const uint8_t *nonce, - size_t nonce_length, - const uint8_t *additional_data, - size_t additional_data_length, - const uint8_t *ciphertext, - size_t ciphertext_length, - uint8_t *plaintext, - size_t plaintext_size, - size_t *plaintext_length); - -/** The type of the state data structure for multipart AEAD operations. - * - * Before calling any function on an AEAD operation object, the application - * must initialize it by any of the following means: - * - Set the structure to all-bits-zero, for example: - * \code - * psa_aead_operation_t operation; - * memset(&operation, 0, sizeof(operation)); - * \endcode - * - Initialize the structure to logical zero values, for example: - * \code - * psa_aead_operation_t operation = {0}; - * \endcode - * - Initialize the structure to the initializer #PSA_AEAD_OPERATION_INIT, - * for example: - * \code - * psa_aead_operation_t operation = PSA_AEAD_OPERATION_INIT; - * \endcode - * - Assign the result of the function psa_aead_operation_init() - * to the structure, for example: - * \code - * psa_aead_operation_t operation; - * operation = psa_aead_operation_init(); - * \endcode - * - * This is an implementation-defined \c struct. Applications should not - * make any assumptions about the content of this structure except - * as directed by the documentation of a specific implementation. */ -typedef struct psa_aead_operation_s psa_aead_operation_t; - -/** \def PSA_AEAD_OPERATION_INIT - * - * This macro returns a suitable initializer for an AEAD operation object of - * type #psa_aead_operation_t. - */ -#ifdef __DOXYGEN_ONLY__ -/* This is an example definition for documentation purposes. - * Implementations should define a suitable value in `crypto_struct.h`. - */ -#define PSA_AEAD_OPERATION_INIT {0} -#endif - -/** Return an initial value for an AEAD operation object. - */ -static psa_aead_operation_t psa_aead_operation_init(void); - -/** Set the key for a multipart authenticated encryption operation. - * - * The sequence of operations to encrypt a message with authentication - * is as follows: - * -# Allocate an operation object which will be passed to all the functions - * listed here. - * -# Initialize the operation object with one of the methods described in the - * documentation for #psa_aead_operation_t, e.g. - * #PSA_AEAD_OPERATION_INIT. - * -# Call psa_aead_encrypt_setup() to specify the algorithm and key. - * -# If needed, call psa_aead_set_lengths() to specify the length of the - * inputs to the subsequent calls to psa_aead_update_ad() and - * psa_aead_update(). See the documentation of psa_aead_set_lengths() - * for details. - * -# Call either psa_aead_generate_nonce() or psa_aead_set_nonce() to - * generate or set the nonce. You should use - * psa_aead_generate_nonce() unless the protocol you are implementing - * requires a specific nonce value. - * -# Call psa_aead_update_ad() zero, one or more times, passing a fragment - * of the non-encrypted additional authenticated data each time. - * -# Call psa_aead_update() zero, one or more times, passing a fragment - * of the message to encrypt each time. - * -# Call psa_aead_finish(). - * - * If an error occurs at any step after a call to psa_aead_encrypt_setup(), - * the operation will need to be reset by a call to psa_aead_abort(). The - * application may call psa_aead_abort() at any time after the operation - * has been initialized. - * - * After a successful call to psa_aead_encrypt_setup(), the application must - * eventually terminate the operation. The following events terminate an - * operation: - * - A successful call to psa_aead_finish(). - * - A call to psa_aead_abort(). - * - * \param[in,out] operation The operation object to set up. It must have - * been initialized as per the documentation for - * #psa_aead_operation_t and not yet in use. - * \param key Identifier of the key to use for the operation. - * It must remain valid until the operation - * terminates. It must allow the usage - * #PSA_KEY_USAGE_ENCRYPT. - * \param alg The AEAD algorithm to compute - * (\c PSA_ALG_XXX value such that - * #PSA_ALG_IS_AEAD(\p alg) is true). - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be inactive). - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p key is not compatible with \p alg. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not supported or is not an AEAD algorithm. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_aead_encrypt_setup(psa_aead_operation_t *operation, - mbedtls_svc_key_id_t key, - psa_algorithm_t alg); - -/** Set the key for a multipart authenticated decryption operation. - * - * The sequence of operations to decrypt a message with authentication - * is as follows: - * -# Allocate an operation object which will be passed to all the functions - * listed here. - * -# Initialize the operation object with one of the methods described in the - * documentation for #psa_aead_operation_t, e.g. - * #PSA_AEAD_OPERATION_INIT. - * -# Call psa_aead_decrypt_setup() to specify the algorithm and key. - * -# If needed, call psa_aead_set_lengths() to specify the length of the - * inputs to the subsequent calls to psa_aead_update_ad() and - * psa_aead_update(). See the documentation of psa_aead_set_lengths() - * for details. - * -# Call psa_aead_set_nonce() with the nonce for the decryption. - * -# Call psa_aead_update_ad() zero, one or more times, passing a fragment - * of the non-encrypted additional authenticated data each time. - * -# Call psa_aead_update() zero, one or more times, passing a fragment - * of the ciphertext to decrypt each time. - * -# Call psa_aead_verify(). - * - * If an error occurs at any step after a call to psa_aead_decrypt_setup(), - * the operation will need to be reset by a call to psa_aead_abort(). The - * application may call psa_aead_abort() at any time after the operation - * has been initialized. - * - * After a successful call to psa_aead_decrypt_setup(), the application must - * eventually terminate the operation. The following events terminate an - * operation: - * - A successful call to psa_aead_verify(). - * - A call to psa_aead_abort(). - * - * \param[in,out] operation The operation object to set up. It must have - * been initialized as per the documentation for - * #psa_aead_operation_t and not yet in use. - * \param key Identifier of the key to use for the operation. - * It must remain valid until the operation - * terminates. It must allow the usage - * #PSA_KEY_USAGE_DECRYPT. - * \param alg The AEAD algorithm to compute - * (\c PSA_ALG_XXX value such that - * #PSA_ALG_IS_AEAD(\p alg) is true). - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be inactive). - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p key is not compatible with \p alg. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not supported or is not an AEAD algorithm. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_aead_decrypt_setup(psa_aead_operation_t *operation, - mbedtls_svc_key_id_t key, - psa_algorithm_t alg); - -/** Generate a random nonce for an authenticated encryption operation. - * - * This function generates a random nonce for the authenticated encryption - * operation with an appropriate size for the chosen algorithm, key type - * and key size. - * - * The application must call psa_aead_encrypt_setup() before - * calling this function. - * - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_aead_abort(). - * - * \param[in,out] operation Active AEAD operation. - * \param[out] nonce Buffer where the generated nonce is to be - * written. - * \param nonce_size Size of the \p nonce buffer in bytes. - * \param[out] nonce_length On success, the number of bytes of the - * generated nonce. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be an active aead encrypt - * operation, with no nonce set). - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p nonce buffer is too small. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_aead_generate_nonce(psa_aead_operation_t *operation, - uint8_t *nonce, - size_t nonce_size, - size_t *nonce_length); - -/** Set the nonce for an authenticated encryption or decryption operation. - * - * This function sets the nonce for the authenticated - * encryption or decryption operation. - * - * The application must call psa_aead_encrypt_setup() or - * psa_aead_decrypt_setup() before calling this function. - * - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_aead_abort(). - * - * \note When encrypting, applications should use psa_aead_generate_nonce() - * instead of this function, unless implementing a protocol that requires - * a non-random IV. - * - * \param[in,out] operation Active AEAD operation. - * \param[in] nonce Buffer containing the nonce to use. - * \param nonce_length Size of the nonce in bytes. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be active, with no nonce - * set). - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The size of \p nonce is not acceptable for the chosen algorithm. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_aead_set_nonce(psa_aead_operation_t *operation, - const uint8_t *nonce, - size_t nonce_length); - -/** Declare the lengths of the message and additional data for AEAD. - * - * The application must call this function before calling - * psa_aead_update_ad() or psa_aead_update() if the algorithm for - * the operation requires it. If the algorithm does not require it, - * calling this function is optional, but if this function is called - * then the implementation must enforce the lengths. - * - * You may call this function before or after setting the nonce with - * psa_aead_set_nonce() or psa_aead_generate_nonce(). - * - * - For #PSA_ALG_CCM, calling this function is required. - * - For the other AEAD algorithms defined in this specification, calling - * this function is not required. - * - For vendor-defined algorithm, refer to the vendor documentation. - * - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_aead_abort(). - * - * \param[in,out] operation Active AEAD operation. - * \param ad_length Size of the non-encrypted additional - * authenticated data in bytes. - * \param plaintext_length Size of the plaintext to encrypt in bytes. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be active, and - * psa_aead_update_ad() and psa_aead_update() must not have been - * called yet). - * \retval #PSA_ERROR_INVALID_ARGUMENT - * At least one of the lengths is not acceptable for the chosen - * algorithm. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_aead_set_lengths(psa_aead_operation_t *operation, - size_t ad_length, - size_t plaintext_length); - -/** Pass additional data to an active AEAD operation. - * - * Additional data is authenticated, but not encrypted. - * - * You may call this function multiple times to pass successive fragments - * of the additional data. You may not call this function after passing - * data to encrypt or decrypt with psa_aead_update(). - * - * Before calling this function, you must: - * 1. Call either psa_aead_encrypt_setup() or psa_aead_decrypt_setup(). - * 2. Set the nonce with psa_aead_generate_nonce() or psa_aead_set_nonce(). - * - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_aead_abort(). - * - * \warning When decrypting, until psa_aead_verify() has returned #PSA_SUCCESS, - * there is no guarantee that the input is valid. Therefore, until - * you have called psa_aead_verify() and it has returned #PSA_SUCCESS, - * treat the input as untrusted and prepare to undo any action that - * depends on the input if psa_aead_verify() returns an error status. - * - * \param[in,out] operation Active AEAD operation. - * \param[in] input Buffer containing the fragment of - * additional data. - * \param input_length Size of the \p input buffer in bytes. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be active, have a nonce - * set, have lengths set if required by the algorithm, and - * psa_aead_update() must not have been called yet). - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The total input length overflows the additional data length that - * was previously specified with psa_aead_set_lengths(). - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_aead_update_ad(psa_aead_operation_t *operation, - const uint8_t *input, - size_t input_length); - -/** Encrypt or decrypt a message fragment in an active AEAD operation. - * - * Before calling this function, you must: - * 1. Call either psa_aead_encrypt_setup() or psa_aead_decrypt_setup(). - * The choice of setup function determines whether this function - * encrypts or decrypts its input. - * 2. Set the nonce with psa_aead_generate_nonce() or psa_aead_set_nonce(). - * 3. Call psa_aead_update_ad() to pass all the additional data. - * - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_aead_abort(). - * - * \warning When decrypting, until psa_aead_verify() has returned #PSA_SUCCESS, - * there is no guarantee that the input is valid. Therefore, until - * you have called psa_aead_verify() and it has returned #PSA_SUCCESS: - * - Do not use the output in any way other than storing it in a - * confidential location. If you take any action that depends - * on the tentative decrypted data, this action will need to be - * undone if the input turns out not to be valid. Furthermore, - * if an adversary can observe that this action took place - * (for example through timing), they may be able to use this - * fact as an oracle to decrypt any message encrypted with the - * same key. - * - In particular, do not copy the output anywhere but to a - * memory or storage space that you have exclusive access to. - * - * This function does not require the input to be aligned to any - * particular block boundary. If the implementation can only process - * a whole block at a time, it must consume all the input provided, but - * it may delay the end of the corresponding output until a subsequent - * call to psa_aead_update(), psa_aead_finish() or psa_aead_verify() - * provides sufficient input. The amount of data that can be delayed - * in this way is bounded by #PSA_AEAD_UPDATE_OUTPUT_SIZE. - * - * \param[in,out] operation Active AEAD operation. - * \param[in] input Buffer containing the message fragment to - * encrypt or decrypt. - * \param input_length Size of the \p input buffer in bytes. - * \param[out] output Buffer where the output is to be written. - * \param output_size Size of the \p output buffer in bytes. - * This must be appropriate for the selected - * algorithm and key: - * - A sufficient output size is - * #PSA_AEAD_UPDATE_OUTPUT_SIZE(\c key_type, - * \c alg, \p input_length) where - * \c key_type is the type of key and \c alg is - * the algorithm that were used to set up the - * operation. - * - #PSA_AEAD_UPDATE_OUTPUT_MAX_SIZE(\p - * input_length) evaluates to the maximum - * output size of any supported AEAD - * algorithm. - * \param[out] output_length On success, the number of bytes - * that make up the returned output. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be active, have a nonce - * set, and have lengths set if required by the algorithm). - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p output buffer is too small. - * #PSA_AEAD_UPDATE_OUTPUT_SIZE(\c key_type, \c alg, \p input_length) or - * #PSA_AEAD_UPDATE_OUTPUT_MAX_SIZE(\p input_length) can be used to - * determine the required buffer size. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The total length of input to psa_aead_update_ad() so far is - * less than the additional data length that was previously - * specified with psa_aead_set_lengths(). - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The total input length overflows the plaintext length that - * was previously specified with psa_aead_set_lengths(). - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_aead_update(psa_aead_operation_t *operation, - const uint8_t *input, - size_t input_length, - uint8_t *output, - size_t output_size, - size_t *output_length); - -/** Finish encrypting a message in an AEAD operation. - * - * The operation must have been set up with psa_aead_encrypt_setup(). - * - * This function finishes the authentication of the additional data - * formed by concatenating the inputs passed to preceding calls to - * psa_aead_update_ad() with the plaintext formed by concatenating the - * inputs passed to preceding calls to psa_aead_update(). - * - * This function has two output buffers: - * - \p ciphertext contains trailing ciphertext that was buffered from - * preceding calls to psa_aead_update(). - * - \p tag contains the authentication tag. - * - * When this function returns successfuly, the operation becomes inactive. - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_aead_abort(). - * - * \param[in,out] operation Active AEAD operation. - * \param[out] ciphertext Buffer where the last part of the ciphertext - * is to be written. - * \param ciphertext_size Size of the \p ciphertext buffer in bytes. - * This must be appropriate for the selected - * algorithm and key: - * - A sufficient output size is - * #PSA_AEAD_FINISH_OUTPUT_SIZE(\c key_type, - * \c alg) where \c key_type is the type of key - * and \c alg is the algorithm that were used to - * set up the operation. - * - #PSA_AEAD_FINISH_OUTPUT_MAX_SIZE evaluates to - * the maximum output size of any supported AEAD - * algorithm. - * \param[out] ciphertext_length On success, the number of bytes of - * returned ciphertext. - * \param[out] tag Buffer where the authentication tag is - * to be written. - * \param tag_size Size of the \p tag buffer in bytes. - * This must be appropriate for the selected - * algorithm and key: - * - The exact tag size is #PSA_AEAD_TAG_LENGTH(\c - * key_type, \c key_bits, \c alg) where - * \c key_type and \c key_bits are the type and - * bit-size of the key, and \c alg is the - * algorithm that were used in the call to - * psa_aead_encrypt_setup(). - * - #PSA_AEAD_TAG_MAX_SIZE evaluates to the - * maximum tag size of any supported AEAD - * algorithm. - * \param[out] tag_length On success, the number of bytes - * that make up the returned tag. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be an active encryption - * operation with a nonce set). - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p ciphertext or \p tag buffer is too small. - * #PSA_AEAD_FINISH_OUTPUT_SIZE(\c key_type, \c alg) or - * #PSA_AEAD_FINISH_OUTPUT_MAX_SIZE can be used to determine the - * required \p ciphertext buffer size. #PSA_AEAD_TAG_LENGTH(\c key_type, - * \c key_bits, \c alg) or #PSA_AEAD_TAG_MAX_SIZE can be used to - * determine the required \p tag buffer size. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The total length of input to psa_aead_update_ad() so far is - * less than the additional data length that was previously - * specified with psa_aead_set_lengths(). - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The total length of input to psa_aead_update() so far is - * less than the plaintext length that was previously - * specified with psa_aead_set_lengths(). - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_aead_finish(psa_aead_operation_t *operation, - uint8_t *ciphertext, - size_t ciphertext_size, - size_t *ciphertext_length, - uint8_t *tag, - size_t tag_size, - size_t *tag_length); - -/** Finish authenticating and decrypting a message in an AEAD operation. - * - * The operation must have been set up with psa_aead_decrypt_setup(). - * - * This function finishes the authenticated decryption of the message - * components: - * - * - The additional data consisting of the concatenation of the inputs - * passed to preceding calls to psa_aead_update_ad(). - * - The ciphertext consisting of the concatenation of the inputs passed to - * preceding calls to psa_aead_update(). - * - The tag passed to this function call. - * - * If the authentication tag is correct, this function outputs any remaining - * plaintext and reports success. If the authentication tag is not correct, - * this function returns #PSA_ERROR_INVALID_SIGNATURE. - * - * When this function returns successfuly, the operation becomes inactive. - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_aead_abort(). - * - * \note Implementations shall make the best effort to ensure that the - * comparison between the actual tag and the expected tag is performed - * in constant time. - * - * \param[in,out] operation Active AEAD operation. - * \param[out] plaintext Buffer where the last part of the plaintext - * is to be written. This is the remaining data - * from previous calls to psa_aead_update() - * that could not be processed until the end - * of the input. - * \param plaintext_size Size of the \p plaintext buffer in bytes. - * This must be appropriate for the selected algorithm and key: - * - A sufficient output size is - * #PSA_AEAD_VERIFY_OUTPUT_SIZE(\c key_type, - * \c alg) where \c key_type is the type of key - * and \c alg is the algorithm that were used to - * set up the operation. - * - #PSA_AEAD_VERIFY_OUTPUT_MAX_SIZE evaluates to - * the maximum output size of any supported AEAD - * algorithm. - * \param[out] plaintext_length On success, the number of bytes of - * returned plaintext. - * \param[in] tag Buffer containing the authentication tag. - * \param tag_length Size of the \p tag buffer in bytes. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_SIGNATURE - * The calculations were successful, but the authentication tag is - * not correct. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be an active decryption - * operation with a nonce set). - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p plaintext buffer is too small. - * #PSA_AEAD_VERIFY_OUTPUT_SIZE(\c key_type, \c alg) or - * #PSA_AEAD_VERIFY_OUTPUT_MAX_SIZE can be used to determine the - * required buffer size. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The total length of input to psa_aead_update_ad() so far is - * less than the additional data length that was previously - * specified with psa_aead_set_lengths(). - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The total length of input to psa_aead_update() so far is - * less than the plaintext length that was previously - * specified with psa_aead_set_lengths(). - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_aead_verify(psa_aead_operation_t *operation, - uint8_t *plaintext, - size_t plaintext_size, - size_t *plaintext_length, - const uint8_t *tag, - size_t tag_length); - -/** Abort an AEAD operation. - * - * Aborting an operation frees all associated resources except for the - * \p operation structure itself. Once aborted, the operation object - * can be reused for another operation by calling - * psa_aead_encrypt_setup() or psa_aead_decrypt_setup() again. - * - * You may call this function any time after the operation object has - * been initialized as described in #psa_aead_operation_t. - * - * In particular, calling psa_aead_abort() after the operation has been - * terminated by a call to psa_aead_abort(), psa_aead_finish() or - * psa_aead_verify() is safe and has no effect. - * - * \param[in,out] operation Initialized AEAD operation. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_aead_abort(psa_aead_operation_t *operation); - -/**@}*/ - -/** \defgroup asymmetric Asymmetric cryptography - * @{ - */ - -/** - * \brief Sign a message with a private key. For hash-and-sign algorithms, - * this includes the hashing step. - * - * \note To perform a multi-part hash-and-sign signature algorithm, first use - * a multi-part hash operation and then pass the resulting hash to - * psa_sign_hash(). PSA_ALG_GET_HASH(\p alg) can be used to determine the - * hash algorithm to use. - * - * \param[in] key Identifier of the key to use for the operation. - * It must be an asymmetric key pair. The key must - * allow the usage #PSA_KEY_USAGE_SIGN_MESSAGE. - * \param[in] alg An asymmetric signature algorithm (PSA_ALG_XXX - * value such that #PSA_ALG_IS_SIGN_MESSAGE(\p alg) - * is true), that is compatible with the type of - * \p key. - * \param[in] input The input message to sign. - * \param[in] input_length Size of the \p input buffer in bytes. - * \param[out] signature Buffer where the signature is to be written. - * \param[in] signature_size Size of the \p signature buffer in bytes. This - * must be appropriate for the selected - * algorithm and key: - * - The required signature size is - * #PSA_SIGN_OUTPUT_SIZE(\c key_type, \c key_bits, \p alg) - * where \c key_type and \c key_bits are the type and - * bit-size respectively of key. - * - #PSA_SIGNATURE_MAX_SIZE evaluates to the - * maximum signature size of any supported - * signature algorithm. - * \param[out] signature_length On success, the number of bytes that make up - * the returned signature value. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * The key does not have the #PSA_KEY_USAGE_SIGN_MESSAGE flag, - * or it does not permit the requested algorithm. - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p signature buffer is too small. You can - * determine a sufficient buffer size by calling - * #PSA_SIGN_OUTPUT_SIZE(\c key_type, \c key_bits, \p alg) - * where \c key_type and \c key_bits are the type and bit-size - * respectively of \p key. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_DATA_CORRUPT - * \retval #PSA_ERROR_DATA_INVALID - * \retval #PSA_ERROR_INSUFFICIENT_ENTROPY - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_sign_message( mbedtls_svc_key_id_t key, - psa_algorithm_t alg, - const uint8_t * input, - size_t input_length, - uint8_t * signature, - size_t signature_size, - size_t * signature_length ); - -/** \brief Verify the signature of a message with a public key, using - * a hash-and-sign verification algorithm. - * - * \note To perform a multi-part hash-and-sign signature verification - * algorithm, first use a multi-part hash operation to hash the message - * and then pass the resulting hash to psa_verify_hash(). - * PSA_ALG_GET_HASH(\p alg) can be used to determine the hash algorithm - * to use. - * - * \param[in] key Identifier of the key to use for the operation. - * It must be a public key or an asymmetric key - * pair. The key must allow the usage - * #PSA_KEY_USAGE_VERIFY_MESSAGE. - * \param[in] alg An asymmetric signature algorithm (PSA_ALG_XXX - * value such that #PSA_ALG_IS_SIGN_MESSAGE(\p alg) - * is true), that is compatible with the type of - * \p key. - * \param[in] input The message whose signature is to be verified. - * \param[in] input_length Size of the \p input buffer in bytes. - * \param[out] signature Buffer containing the signature to verify. - * \param[in] signature_length Size of the \p signature buffer in bytes. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * The key does not have the #PSA_KEY_USAGE_SIGN_MESSAGE flag, - * or it does not permit the requested algorithm. - * \retval #PSA_ERROR_INVALID_SIGNATURE - * The calculation was performed successfully, but the passed signature - * is not a valid signature. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_DATA_CORRUPT - * \retval #PSA_ERROR_DATA_INVALID - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_verify_message( mbedtls_svc_key_id_t key, - psa_algorithm_t alg, - const uint8_t * input, - size_t input_length, - const uint8_t * signature, - size_t signature_length ); - -/** - * \brief Sign a hash or short message with a private key. - * - * Note that to perform a hash-and-sign signature algorithm, you must - * first calculate the hash by calling psa_hash_setup(), psa_hash_update() - * and psa_hash_finish(), or alternatively by calling psa_hash_compute(). - * Then pass the resulting hash as the \p hash - * parameter to this function. You can use #PSA_ALG_SIGN_GET_HASH(\p alg) - * to determine the hash algorithm to use. - * - * \param key Identifier of the key to use for the operation. - * It must be an asymmetric key pair. The key must - * allow the usage #PSA_KEY_USAGE_SIGN_HASH. - * \param alg A signature algorithm that is compatible with - * the type of \p key. - * \param[in] hash The hash or message to sign. - * \param hash_length Size of the \p hash buffer in bytes. - * \param[out] signature Buffer where the signature is to be written. - * \param signature_size Size of the \p signature buffer in bytes. - * \param[out] signature_length On success, the number of bytes - * that make up the returned signature value. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p signature buffer is too small. You can - * determine a sufficient buffer size by calling - * #PSA_SIGN_OUTPUT_SIZE(\c key_type, \c key_bits, \p alg) - * where \c key_type and \c key_bits are the type and bit-size - * respectively of \p key. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_INSUFFICIENT_ENTROPY - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_sign_hash(mbedtls_svc_key_id_t key, - psa_algorithm_t alg, - const uint8_t *hash, - size_t hash_length, - uint8_t *signature, - size_t signature_size, - size_t *signature_length); - -/** - * \brief Verify the signature of a hash or short message using a public key. - * - * Note that to perform a hash-and-sign signature algorithm, you must - * first calculate the hash by calling psa_hash_setup(), psa_hash_update() - * and psa_hash_finish(), or alternatively by calling psa_hash_compute(). - * Then pass the resulting hash as the \p hash - * parameter to this function. You can use #PSA_ALG_SIGN_GET_HASH(\p alg) - * to determine the hash algorithm to use. - * - * \param key Identifier of the key to use for the operation. It - * must be a public key or an asymmetric key pair. The - * key must allow the usage - * #PSA_KEY_USAGE_VERIFY_HASH. - * \param alg A signature algorithm that is compatible with - * the type of \p key. - * \param[in] hash The hash or message whose signature is to be - * verified. - * \param hash_length Size of the \p hash buffer in bytes. - * \param[in] signature Buffer containing the signature to verify. - * \param signature_length Size of the \p signature buffer in bytes. - * - * \retval #PSA_SUCCESS - * The signature is valid. - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_SIGNATURE - * The calculation was perfomed successfully, but the passed - * signature is not a valid signature. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_verify_hash(mbedtls_svc_key_id_t key, - psa_algorithm_t alg, - const uint8_t *hash, - size_t hash_length, - const uint8_t *signature, - size_t signature_length); - -/** - * \brief Encrypt a short message with a public key. - * - * \param key Identifer of the key to use for the operation. - * It must be a public key or an asymmetric key - * pair. It must allow the usage - * #PSA_KEY_USAGE_ENCRYPT. - * \param alg An asymmetric encryption algorithm that is - * compatible with the type of \p key. - * \param[in] input The message to encrypt. - * \param input_length Size of the \p input buffer in bytes. - * \param[in] salt A salt or label, if supported by the - * encryption algorithm. - * If the algorithm does not support a - * salt, pass \c NULL. - * If the algorithm supports an optional - * salt and you do not want to pass a salt, - * pass \c NULL. - * - * - For #PSA_ALG_RSA_PKCS1V15_CRYPT, no salt is - * supported. - * \param salt_length Size of the \p salt buffer in bytes. - * If \p salt is \c NULL, pass 0. - * \param[out] output Buffer where the encrypted message is to - * be written. - * \param output_size Size of the \p output buffer in bytes. - * \param[out] output_length On success, the number of bytes - * that make up the returned output. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p output buffer is too small. You can - * determine a sufficient buffer size by calling - * #PSA_ASYMMETRIC_ENCRYPT_OUTPUT_SIZE(\c key_type, \c key_bits, \p alg) - * where \c key_type and \c key_bits are the type and bit-size - * respectively of \p key. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_INSUFFICIENT_ENTROPY - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_asymmetric_encrypt(mbedtls_svc_key_id_t key, - psa_algorithm_t alg, - const uint8_t *input, - size_t input_length, - const uint8_t *salt, - size_t salt_length, - uint8_t *output, - size_t output_size, - size_t *output_length); - -/** - * \brief Decrypt a short message with a private key. - * - * \param key Identifier of the key to use for the operation. - * It must be an asymmetric key pair. It must - * allow the usage #PSA_KEY_USAGE_DECRYPT. - * \param alg An asymmetric encryption algorithm that is - * compatible with the type of \p key. - * \param[in] input The message to decrypt. - * \param input_length Size of the \p input buffer in bytes. - * \param[in] salt A salt or label, if supported by the - * encryption algorithm. - * If the algorithm does not support a - * salt, pass \c NULL. - * If the algorithm supports an optional - * salt and you do not want to pass a salt, - * pass \c NULL. - * - * - For #PSA_ALG_RSA_PKCS1V15_CRYPT, no salt is - * supported. - * \param salt_length Size of the \p salt buffer in bytes. - * If \p salt is \c NULL, pass 0. - * \param[out] output Buffer where the decrypted message is to - * be written. - * \param output_size Size of the \c output buffer in bytes. - * \param[out] output_length On success, the number of bytes - * that make up the returned output. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * The size of the \p output buffer is too small. You can - * determine a sufficient buffer size by calling - * #PSA_ASYMMETRIC_DECRYPT_OUTPUT_SIZE(\c key_type, \c key_bits, \p alg) - * where \c key_type and \c key_bits are the type and bit-size - * respectively of \p key. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_INSUFFICIENT_ENTROPY - * \retval #PSA_ERROR_INVALID_PADDING - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_asymmetric_decrypt(mbedtls_svc_key_id_t key, - psa_algorithm_t alg, - const uint8_t *input, - size_t input_length, - const uint8_t *salt, - size_t salt_length, - uint8_t *output, - size_t output_size, - size_t *output_length); - -/**@}*/ - -/** \defgroup key_derivation Key derivation and pseudorandom generation - * @{ - */ - -/** The type of the state data structure for key derivation operations. - * - * Before calling any function on a key derivation operation object, the - * application must initialize it by any of the following means: - * - Set the structure to all-bits-zero, for example: - * \code - * psa_key_derivation_operation_t operation; - * memset(&operation, 0, sizeof(operation)); - * \endcode - * - Initialize the structure to logical zero values, for example: - * \code - * psa_key_derivation_operation_t operation = {0}; - * \endcode - * - Initialize the structure to the initializer #PSA_KEY_DERIVATION_OPERATION_INIT, - * for example: - * \code - * psa_key_derivation_operation_t operation = PSA_KEY_DERIVATION_OPERATION_INIT; - * \endcode - * - Assign the result of the function psa_key_derivation_operation_init() - * to the structure, for example: - * \code - * psa_key_derivation_operation_t operation; - * operation = psa_key_derivation_operation_init(); - * \endcode - * - * This is an implementation-defined \c struct. Applications should not - * make any assumptions about the content of this structure except - * as directed by the documentation of a specific implementation. - */ -typedef struct psa_key_derivation_s psa_key_derivation_operation_t; - -/** \def PSA_KEY_DERIVATION_OPERATION_INIT - * - * This macro returns a suitable initializer for a key derivation operation - * object of type #psa_key_derivation_operation_t. - */ -#ifdef __DOXYGEN_ONLY__ -/* This is an example definition for documentation purposes. - * Implementations should define a suitable value in `crypto_struct.h`. - */ -#define PSA_KEY_DERIVATION_OPERATION_INIT {0} -#endif - -/** Return an initial value for a key derivation operation object. - */ -static psa_key_derivation_operation_t psa_key_derivation_operation_init(void); - -/** Set up a key derivation operation. - * - * A key derivation algorithm takes some inputs and uses them to generate - * a byte stream in a deterministic way. - * This byte stream can be used to produce keys and other - * cryptographic material. - * - * To derive a key: - * -# Start with an initialized object of type #psa_key_derivation_operation_t. - * -# Call psa_key_derivation_setup() to select the algorithm. - * -# Provide the inputs for the key derivation by calling - * psa_key_derivation_input_bytes() or psa_key_derivation_input_key() - * as appropriate. Which inputs are needed, in what order, and whether - * they may be keys and if so of what type depends on the algorithm. - * -# Optionally set the operation's maximum capacity with - * psa_key_derivation_set_capacity(). You may do this before, in the middle - * of or after providing inputs. For some algorithms, this step is mandatory - * because the output depends on the maximum capacity. - * -# To derive a key, call psa_key_derivation_output_key(). - * To derive a byte string for a different purpose, call - * psa_key_derivation_output_bytes(). - * Successive calls to these functions use successive output bytes - * calculated by the key derivation algorithm. - * -# Clean up the key derivation operation object with - * psa_key_derivation_abort(). - * - * If this function returns an error, the key derivation operation object is - * not changed. - * - * If an error occurs at any step after a call to psa_key_derivation_setup(), - * the operation will need to be reset by a call to psa_key_derivation_abort(). - * - * Implementations must reject an attempt to derive a key of size 0. - * - * \param[in,out] operation The key derivation operation object - * to set up. It must - * have been initialized but not set up yet. - * \param alg The key derivation algorithm to compute - * (\c PSA_ALG_XXX value such that - * #PSA_ALG_IS_KEY_DERIVATION(\p alg) is true). - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \c alg is not a key derivation algorithm. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \c alg is not supported or is not a key derivation algorithm. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be inactive). - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_key_derivation_setup( - psa_key_derivation_operation_t *operation, - psa_algorithm_t alg); - -/** Retrieve the current capacity of a key derivation operation. - * - * The capacity of a key derivation is the maximum number of bytes that it can - * return. When you get *N* bytes of output from a key derivation operation, - * this reduces its capacity by *N*. - * - * \param[in] operation The operation to query. - * \param[out] capacity On success, the capacity of the operation. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be active). - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_key_derivation_get_capacity( - const psa_key_derivation_operation_t *operation, - size_t *capacity); - -/** Set the maximum capacity of a key derivation operation. - * - * The capacity of a key derivation operation is the maximum number of bytes - * that the key derivation operation can return from this point onwards. - * - * \param[in,out] operation The key derivation operation object to modify. - * \param capacity The new capacity of the operation. - * It must be less or equal to the operation's - * current capacity. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p capacity is larger than the operation's current capacity. - * In this case, the operation object remains valid and its capacity - * remains unchanged. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be active). - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_key_derivation_set_capacity( - psa_key_derivation_operation_t *operation, - size_t capacity); - -/** Use the maximum possible capacity for a key derivation operation. - * - * Use this value as the capacity argument when setting up a key derivation - * to indicate that the operation should have the maximum possible capacity. - * The value of the maximum possible capacity depends on the key derivation - * algorithm. - */ -#define PSA_KEY_DERIVATION_UNLIMITED_CAPACITY ((size_t)(-1)) - -/** Provide an input for key derivation or key agreement. - * - * Which inputs are required and in what order depends on the algorithm. - * Refer to the documentation of each key derivation or key agreement - * algorithm for information. - * - * This function passes direct inputs, which is usually correct for - * non-secret inputs. To pass a secret input, which should be in a key - * object, call psa_key_derivation_input_key() instead of this function. - * Refer to the documentation of individual step types - * (`PSA_KEY_DERIVATION_INPUT_xxx` values of type ::psa_key_derivation_step_t) - * for more information. - * - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_key_derivation_abort(). - * - * \param[in,out] operation The key derivation operation object to use. - * It must have been set up with - * psa_key_derivation_setup() and must not - * have produced any output yet. - * \param step Which step the input data is for. - * \param[in] data Input data to use. - * \param data_length Size of the \p data buffer in bytes. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \c step is not compatible with the operation's algorithm. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \c step does not allow direct inputs. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid for this input \p step. - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_key_derivation_input_bytes( - psa_key_derivation_operation_t *operation, - psa_key_derivation_step_t step, - const uint8_t *data, - size_t data_length); - -/** Provide an input for key derivation in the form of a key. - * - * Which inputs are required and in what order depends on the algorithm. - * Refer to the documentation of each key derivation or key agreement - * algorithm for information. - * - * This function obtains input from a key object, which is usually correct for - * secret inputs or for non-secret personalization strings kept in the key - * store. To pass a non-secret parameter which is not in the key store, - * call psa_key_derivation_input_bytes() instead of this function. - * Refer to the documentation of individual step types - * (`PSA_KEY_DERIVATION_INPUT_xxx` values of type ::psa_key_derivation_step_t) - * for more information. - * - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_key_derivation_abort(). - * - * \param[in,out] operation The key derivation operation object to use. - * It must have been set up with - * psa_key_derivation_setup() and must not - * have produced any output yet. - * \param step Which step the input data is for. - * \param key Identifier of the key. It must have an - * appropriate type for step and must allow the - * usage #PSA_KEY_USAGE_DERIVE. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \c step is not compatible with the operation's algorithm. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \c step does not allow key inputs of the given type - * or does not allow key inputs at all. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid for this input \p step. - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_key_derivation_input_key( - psa_key_derivation_operation_t *operation, - psa_key_derivation_step_t step, - mbedtls_svc_key_id_t key); - -/** Perform a key agreement and use the shared secret as input to a key - * derivation. - * - * A key agreement algorithm takes two inputs: a private key \p private_key - * a public key \p peer_key. - * The result of this function is passed as input to a key derivation. - * The output of this key derivation can be extracted by reading from the - * resulting operation to produce keys and other cryptographic material. - * - * If this function returns an error status, the operation enters an error - * state and must be aborted by calling psa_key_derivation_abort(). - * - * \param[in,out] operation The key derivation operation object to use. - * It must have been set up with - * psa_key_derivation_setup() with a - * key agreement and derivation algorithm - * \c alg (\c PSA_ALG_XXX value such that - * #PSA_ALG_IS_KEY_AGREEMENT(\c alg) is true - * and #PSA_ALG_IS_RAW_KEY_AGREEMENT(\c alg) - * is false). - * The operation must be ready for an - * input of the type given by \p step. - * \param step Which step the input data is for. - * \param private_key Identifier of the private key to use. It must - * allow the usage #PSA_KEY_USAGE_DERIVE. - * \param[in] peer_key Public key of the peer. The peer key must be in the - * same format that psa_import_key() accepts for the - * public key type corresponding to the type of - * private_key. That is, this function performs the - * equivalent of - * #psa_import_key(..., - * `peer_key`, `peer_key_length`) where - * with key attributes indicating the public key - * type corresponding to the type of `private_key`. - * For example, for EC keys, this means that peer_key - * is interpreted as a point on the curve that the - * private key is on. The standard formats for public - * keys are documented in the documentation of - * psa_export_public_key(). - * \param peer_key_length Size of \p peer_key in bytes. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid for this key agreement \p step. - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \c private_key is not compatible with \c alg, - * or \p peer_key is not valid for \c alg or not compatible with - * \c private_key. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \c alg is not supported or is not a key derivation algorithm. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \c step does not allow an input resulting from a key agreement. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_key_derivation_key_agreement( - psa_key_derivation_operation_t *operation, - psa_key_derivation_step_t step, - mbedtls_svc_key_id_t private_key, - const uint8_t *peer_key, - size_t peer_key_length); - -/** Read some data from a key derivation operation. - * - * This function calculates output bytes from a key derivation algorithm and - * return those bytes. - * If you view the key derivation's output as a stream of bytes, this - * function destructively reads the requested number of bytes from the - * stream. - * The operation's capacity decreases by the number of bytes read. - * - * If this function returns an error status other than - * #PSA_ERROR_INSUFFICIENT_DATA, the operation enters an error - * state and must be aborted by calling psa_key_derivation_abort(). - * - * \param[in,out] operation The key derivation operation object to read from. - * \param[out] output Buffer where the output will be written. - * \param output_length Number of bytes to output. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_INSUFFICIENT_DATA - * The operation's capacity was less than - * \p output_length bytes. Note that in this case, - * no output is written to the output buffer. - * The operation's capacity is set to 0, thus - * subsequent calls to this function will not - * succeed, even with a smaller output buffer. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be active and completed - * all required input steps). - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_key_derivation_output_bytes( - psa_key_derivation_operation_t *operation, - uint8_t *output, - size_t output_length); - -/** Derive a key from an ongoing key derivation operation. - * - * This function calculates output bytes from a key derivation algorithm - * and uses those bytes to generate a key deterministically. - * The key's location, usage policy, type and size are taken from - * \p attributes. - * - * If you view the key derivation's output as a stream of bytes, this - * function destructively reads as many bytes as required from the - * stream. - * The operation's capacity decreases by the number of bytes read. - * - * If this function returns an error status other than - * #PSA_ERROR_INSUFFICIENT_DATA, the operation enters an error - * state and must be aborted by calling psa_key_derivation_abort(). - * - * How much output is produced and consumed from the operation, and how - * the key is derived, depends on the key type and on the key size - * (denoted \c bits below): - * - * - For key types for which the key is an arbitrary sequence of bytes - * of a given size, this function is functionally equivalent to - * calling #psa_key_derivation_output_bytes - * and passing the resulting output to #psa_import_key. - * However, this function has a security benefit: - * if the implementation provides an isolation boundary then - * the key material is not exposed outside the isolation boundary. - * As a consequence, for these key types, this function always consumes - * exactly (\c bits / 8) bytes from the operation. - * The following key types defined in this specification follow this scheme: - * - * - #PSA_KEY_TYPE_AES; - * - #PSA_KEY_TYPE_ARC4; - * - #PSA_KEY_TYPE_CAMELLIA; - * - #PSA_KEY_TYPE_DERIVE; - * - #PSA_KEY_TYPE_HMAC. - * - * - For ECC keys on a Montgomery elliptic curve - * (#PSA_KEY_TYPE_ECC_KEY_PAIR(\c curve) where \c curve designates a - * Montgomery curve), this function always draws a byte string whose - * length is determined by the curve, and sets the mandatory bits - * accordingly. That is: - * - * - Curve25519 (#PSA_ECC_FAMILY_MONTGOMERY, 255 bits): draw a 32-byte - * string and process it as specified in RFC 7748 §5. - * - Curve448 (#PSA_ECC_FAMILY_MONTGOMERY, 448 bits): draw a 56-byte - * string and process it as specified in RFC 7748 §5. - * - * - For key types for which the key is represented by a single sequence of - * \c bits bits with constraints as to which bit sequences are acceptable, - * this function draws a byte string of length (\c bits / 8) bytes rounded - * up to the nearest whole number of bytes. If the resulting byte string - * is acceptable, it becomes the key, otherwise the drawn bytes are discarded. - * This process is repeated until an acceptable byte string is drawn. - * The byte string drawn from the operation is interpreted as specified - * for the output produced by psa_export_key(). - * The following key types defined in this specification follow this scheme: - * - * - #PSA_KEY_TYPE_DES. - * Force-set the parity bits, but discard forbidden weak keys. - * For 2-key and 3-key triple-DES, the three keys are generated - * successively (for example, for 3-key triple-DES, - * if the first 8 bytes specify a weak key and the next 8 bytes do not, - * discard the first 8 bytes, use the next 8 bytes as the first key, - * and continue reading output from the operation to derive the other - * two keys). - * - Finite-field Diffie-Hellman keys (#PSA_KEY_TYPE_DH_KEY_PAIR(\c group) - * where \c group designates any Diffie-Hellman group) and - * ECC keys on a Weierstrass elliptic curve - * (#PSA_KEY_TYPE_ECC_KEY_PAIR(\c curve) where \c curve designates a - * Weierstrass curve). - * For these key types, interpret the byte string as integer - * in big-endian order. Discard it if it is not in the range - * [0, *N* - 2] where *N* is the boundary of the private key domain - * (the prime *p* for Diffie-Hellman, the subprime *q* for DSA, - * or the order of the curve's base point for ECC). - * Add 1 to the resulting integer and use this as the private key *x*. - * This method allows compliance to NIST standards, specifically - * the methods titled "key-pair generation by testing candidates" - * in NIST SP 800-56A §5.6.1.1.4 for Diffie-Hellman, - * in FIPS 186-4 §B.1.2 for DSA, and - * in NIST SP 800-56A §5.6.1.2.2 or - * FIPS 186-4 §B.4.2 for elliptic curve keys. - * - * - For other key types, including #PSA_KEY_TYPE_RSA_KEY_PAIR, - * the way in which the operation output is consumed is - * implementation-defined. - * - * In all cases, the data that is read is discarded from the operation. - * The operation's capacity is decreased by the number of bytes read. - * - * For algorithms that take an input step #PSA_KEY_DERIVATION_INPUT_SECRET, - * the input to that step must be provided with psa_key_derivation_input_key(). - * Future versions of this specification may include additional restrictions - * on the derived key based on the attributes and strength of the secret key. - * - * \param[in] attributes The attributes for the new key. - * \param[in,out] operation The key derivation operation object to read from. - * \param[out] key On success, an identifier for the newly created - * key. For persistent keys, this is the key - * identifier defined in \p attributes. - * \c 0 on failure. - * - * \retval #PSA_SUCCESS - * Success. - * If the key is persistent, the key material and the key's metadata - * have been saved to persistent storage. - * \retval #PSA_ERROR_ALREADY_EXISTS - * This is an attempt to create a persistent key, and there is - * already a persistent key with the given identifier. - * \retval #PSA_ERROR_INSUFFICIENT_DATA - * There was not enough data to create the desired key. - * Note that in this case, no output is written to the output buffer. - * The operation's capacity is set to 0, thus subsequent calls to - * this function will not succeed, even with a smaller output buffer. - * \retval #PSA_ERROR_NOT_SUPPORTED - * The key type or key size is not supported, either by the - * implementation in general or in this particular location. - * \retval #PSA_ERROR_INVALID_ARGUMENT - * The provided key attributes are not valid for the operation. - * \retval #PSA_ERROR_NOT_PERMITTED - * The #PSA_KEY_DERIVATION_INPUT_SECRET input was not provided through - * a key. - * \retval #PSA_ERROR_BAD_STATE - * The operation state is not valid (it must be active and completed - * all required input steps). - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_INSUFFICIENT_STORAGE - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_DATA_INVALID - * \retval #PSA_ERROR_DATA_CORRUPT - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_key_derivation_output_key( - const psa_key_attributes_t *attributes, - psa_key_derivation_operation_t *operation, - mbedtls_svc_key_id_t *key); - -/** Abort a key derivation operation. - * - * Aborting an operation frees all associated resources except for the \c - * operation structure itself. Once aborted, the operation object can be reused - * for another operation by calling psa_key_derivation_setup() again. - * - * This function may be called at any time after the operation - * object has been initialized as described in #psa_key_derivation_operation_t. - * - * In particular, it is valid to call psa_key_derivation_abort() twice, or to - * call psa_key_derivation_abort() on an operation that has not been set up. - * - * \param[in,out] operation The operation to abort. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_key_derivation_abort( - psa_key_derivation_operation_t *operation); - -/** Perform a key agreement and return the raw shared secret. - * - * \warning The raw result of a key agreement algorithm such as finite-field - * Diffie-Hellman or elliptic curve Diffie-Hellman has biases and should - * not be used directly as key material. It should instead be passed as - * input to a key derivation algorithm. To chain a key agreement with - * a key derivation, use psa_key_derivation_key_agreement() and other - * functions from the key derivation interface. - * - * \param alg The key agreement algorithm to compute - * (\c PSA_ALG_XXX value such that - * #PSA_ALG_IS_RAW_KEY_AGREEMENT(\p alg) - * is true). - * \param private_key Identifier of the private key to use. It must - * allow the usage #PSA_KEY_USAGE_DERIVE. - * \param[in] peer_key Public key of the peer. It must be - * in the same format that psa_import_key() - * accepts. The standard formats for public - * keys are documented in the documentation - * of psa_export_public_key(). - * \param peer_key_length Size of \p peer_key in bytes. - * \param[out] output Buffer where the decrypted message is to - * be written. - * \param output_size Size of the \c output buffer in bytes. - * \param[out] output_length On success, the number of bytes - * that make up the returned output. - * - * \retval #PSA_SUCCESS - * Success. - * \retval #PSA_ERROR_INVALID_HANDLE - * \retval #PSA_ERROR_NOT_PERMITTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p alg is not a key agreement algorithm - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \p private_key is not compatible with \p alg, - * or \p peer_key is not valid for \p alg or not compatible with - * \p private_key. - * \retval #PSA_ERROR_BUFFER_TOO_SMALL - * \p output_size is too small - * \retval #PSA_ERROR_NOT_SUPPORTED - * \p alg is not a supported key agreement algorithm. - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_raw_key_agreement(psa_algorithm_t alg, - mbedtls_svc_key_id_t private_key, - const uint8_t *peer_key, - size_t peer_key_length, - uint8_t *output, - size_t output_size, - size_t *output_length); - -/**@}*/ - -/** \defgroup random Random generation - * @{ - */ - -/** - * \brief Generate random bytes. - * - * \warning This function **can** fail! Callers MUST check the return status - * and MUST NOT use the content of the output buffer if the return - * status is not #PSA_SUCCESS. - * - * \note To generate a key, use psa_generate_key() instead. - * - * \param[out] output Output buffer for the generated data. - * \param output_size Number of bytes to generate and output. - * - * \retval #PSA_SUCCESS - * \retval #PSA_ERROR_NOT_SUPPORTED - * \retval #PSA_ERROR_INSUFFICIENT_ENTROPY - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_generate_random(uint8_t *output, - size_t output_size); - -/** - * \brief Generate a key or key pair. - * - * The key is generated randomly. - * Its location, usage policy, type and size are taken from \p attributes. - * - * Implementations must reject an attempt to generate a key of size 0. - * - * The following type-specific considerations apply: - * - For RSA keys (#PSA_KEY_TYPE_RSA_KEY_PAIR), - * the public exponent is 65537. - * The modulus is a product of two probabilistic primes - * between 2^{n-1} and 2^n where n is the bit size specified in the - * attributes. - * - * \param[in] attributes The attributes for the new key. - * \param[out] key On success, an identifier for the newly created - * key. For persistent keys, this is the key - * identifier defined in \p attributes. - * \c 0 on failure. - * - * \retval #PSA_SUCCESS - * Success. - * If the key is persistent, the key material and the key's metadata - * have been saved to persistent storage. - * \retval #PSA_ERROR_ALREADY_EXISTS - * This is an attempt to create a persistent key, and there is - * already a persistent key with the given identifier. - * \retval #PSA_ERROR_NOT_SUPPORTED - * \retval #PSA_ERROR_INVALID_ARGUMENT - * \retval #PSA_ERROR_INSUFFICIENT_MEMORY - * \retval #PSA_ERROR_INSUFFICIENT_ENTROPY - * \retval #PSA_ERROR_COMMUNICATION_FAILURE - * \retval #PSA_ERROR_HARDWARE_FAILURE - * \retval #PSA_ERROR_CORRUPTION_DETECTED - * \retval #PSA_ERROR_INSUFFICIENT_STORAGE - * \retval #PSA_ERROR_DATA_INVALID - * \retval #PSA_ERROR_DATA_CORRUPT - * \retval #PSA_ERROR_STORAGE_FAILURE - * \retval #PSA_ERROR_BAD_STATE - * The library has not been previously initialized by psa_crypto_init(). - * It is implementation-dependent whether a failure to initialize - * results in this error code. - */ -psa_status_t psa_generate_key(const psa_key_attributes_t *attributes, - mbedtls_svc_key_id_t *key); - -/**@}*/ - -#ifdef __cplusplus -} -#endif - -/* The file "crypto_sizes.h" contains definitions for size calculation - * macros whose definitions are implementation-specific. */ -#include "crypto_sizes.h" - -/* The file "crypto_struct.h" contains definitions for - * implementation-specific structs that are declared above. */ -#include "crypto_struct.h" - -/* The file "crypto_extra.h" contains vendor-specific definitions. This - * can include vendor-defined algorithms, extra functions, etc. */ -#include "crypto_extra.h" - -#endif /* PSA_CRYPTO_H */ |