Removed old mbedtls, replacing with submodule.

1 files changed, 0 insertions, 880 deletions

diff --git a/lib/mbedtls-2.27.0/include/mbedtls/pk.h b/lib/mbedtls-2.27.0/include/mbedtls/pk.h
deleted file mode 100644
index 7d0f977..0000000
--- a/lib/mbedtls-2.27.0/include/mbedtls/pk.h
+++ /dev/null
@@ -1,880 +0,0 @@
-/**
- * \file pk.h
- *
- * \brief Public Key abstraction layer
- */
-/*
- *  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 MBEDTLS_PK_H
-#define MBEDTLS_PK_H
-
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
-
-#include "mbedtls/md.h"
-
-#if defined(MBEDTLS_RSA_C)
-#include "mbedtls/rsa.h"
-#endif
-
-#if defined(MBEDTLS_ECP_C)
-#include "mbedtls/ecp.h"
-#endif
-
-#if defined(MBEDTLS_ECDSA_C)
-#include "mbedtls/ecdsa.h"
-#endif
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-#include "psa/crypto.h"
-#endif
-
-#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
-    !defined(inline) && !defined(__cplusplus)
-#define inline __inline
-#endif
-
-#define MBEDTLS_ERR_PK_ALLOC_FAILED        -0x3F80  /**< Memory allocation failed. */
-#define MBEDTLS_ERR_PK_TYPE_MISMATCH       -0x3F00  /**< Type mismatch, eg attempt to encrypt with an ECDSA key */
-#define MBEDTLS_ERR_PK_BAD_INPUT_DATA      -0x3E80  /**< Bad input parameters to function. */
-#define MBEDTLS_ERR_PK_FILE_IO_ERROR       -0x3E00  /**< Read/write of file failed. */
-#define MBEDTLS_ERR_PK_KEY_INVALID_VERSION -0x3D80  /**< Unsupported key version */
-#define MBEDTLS_ERR_PK_KEY_INVALID_FORMAT  -0x3D00  /**< Invalid key tag or value. */
-#define MBEDTLS_ERR_PK_UNKNOWN_PK_ALG      -0x3C80  /**< Key algorithm is unsupported (only RSA and EC are supported). */
-#define MBEDTLS_ERR_PK_PASSWORD_REQUIRED   -0x3C00  /**< Private key password can't be empty. */
-#define MBEDTLS_ERR_PK_PASSWORD_MISMATCH   -0x3B80  /**< Given private key password does not allow for correct decryption. */
-#define MBEDTLS_ERR_PK_INVALID_PUBKEY      -0x3B00  /**< The pubkey tag or value is invalid (only RSA and EC are supported). */
-#define MBEDTLS_ERR_PK_INVALID_ALG         -0x3A80  /**< The algorithm tag or value is invalid. */
-#define MBEDTLS_ERR_PK_UNKNOWN_NAMED_CURVE -0x3A00  /**< Elliptic curve is unsupported (only NIST curves are supported). */
-#define MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE -0x3980  /**< Unavailable feature, e.g. RSA disabled for RSA key. */
-#define MBEDTLS_ERR_PK_SIG_LEN_MISMATCH    -0x3900  /**< The buffer contains a valid signature followed by more data. */
-
-/* MBEDTLS_ERR_PK_HW_ACCEL_FAILED is deprecated and should not be used. */
-#define MBEDTLS_ERR_PK_HW_ACCEL_FAILED     -0x3880  /**< PK hardware accelerator failed. */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * \brief          Public key types
- */
-typedef enum {
-    MBEDTLS_PK_NONE=0,
-    MBEDTLS_PK_RSA,
-    MBEDTLS_PK_ECKEY,
-    MBEDTLS_PK_ECKEY_DH,
-    MBEDTLS_PK_ECDSA,
-    MBEDTLS_PK_RSA_ALT,
-    MBEDTLS_PK_RSASSA_PSS,
-    MBEDTLS_PK_OPAQUE,
-} mbedtls_pk_type_t;
-
-/**
- * \brief           Options for RSASSA-PSS signature verification.
- *                  See \c mbedtls_rsa_rsassa_pss_verify_ext()
- */
-typedef struct mbedtls_pk_rsassa_pss_options
-{
-    mbedtls_md_type_t mgf1_hash_id;
-    int expected_salt_len;
-
-} mbedtls_pk_rsassa_pss_options;
-
-/**
- * \brief           Maximum size of a signature made by mbedtls_pk_sign().
- */
-/* We need to set MBEDTLS_PK_SIGNATURE_MAX_SIZE to the maximum signature
- * size among the supported signature types. Do it by starting at 0,
- * then incrementally increasing to be large enough for each supported
- * signature mechanism.
- *
- * The resulting value can be 0, for example if MBEDTLS_ECDH_C is enabled
- * (which allows the pk module to be included) but neither MBEDTLS_ECDSA_C
- * nor MBEDTLS_RSA_C nor any opaque signature mechanism (PSA or RSA_ALT).
- */
-#define MBEDTLS_PK_SIGNATURE_MAX_SIZE 0
-
-#if ( defined(MBEDTLS_RSA_C) || defined(MBEDTLS_PK_RSA_ALT_SUPPORT) ) && \
-    MBEDTLS_MPI_MAX_SIZE > MBEDTLS_PK_SIGNATURE_MAX_SIZE
-/* For RSA, the signature can be as large as the bignum module allows.
- * For RSA_ALT, the signature size is not necessarily tied to what the
- * bignum module can do, but in the absence of any specific setting,
- * we use that (rsa_alt_sign_wrap in pk_wrap will check). */
-#undef MBEDTLS_PK_SIGNATURE_MAX_SIZE
-#define MBEDTLS_PK_SIGNATURE_MAX_SIZE MBEDTLS_MPI_MAX_SIZE
-#endif
-
-#if defined(MBEDTLS_ECDSA_C) &&                                 \
-    MBEDTLS_ECDSA_MAX_LEN > MBEDTLS_PK_SIGNATURE_MAX_SIZE
-/* For ECDSA, the ecdsa module exports a constant for the maximum
- * signature size. */
-#undef MBEDTLS_PK_SIGNATURE_MAX_SIZE
-#define MBEDTLS_PK_SIGNATURE_MAX_SIZE MBEDTLS_ECDSA_MAX_LEN
-#endif
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-#if PSA_SIGNATURE_MAX_SIZE > MBEDTLS_PK_SIGNATURE_MAX_SIZE
-/* PSA_SIGNATURE_MAX_SIZE is the maximum size of a signature made
- * through the PSA API in the PSA representation. */
-#undef MBEDTLS_PK_SIGNATURE_MAX_SIZE
-#define MBEDTLS_PK_SIGNATURE_MAX_SIZE PSA_SIGNATURE_MAX_SIZE
-#endif
-
-#if PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE + 11 > MBEDTLS_PK_SIGNATURE_MAX_SIZE
-/* The Mbed TLS representation is different for ECDSA signatures:
- * PSA uses the raw concatenation of r and s,
- * whereas Mbed TLS uses the ASN.1 representation (SEQUENCE of two INTEGERs).
- * Add the overhead of ASN.1: up to (1+2) + 2 * (1+2+1) for the
- * types, lengths (represented by up to 2 bytes), and potential leading
- * zeros of the INTEGERs and the SEQUENCE. */
-#undef MBEDTLS_PK_SIGNATURE_MAX_SIZE
-#define MBEDTLS_PK_SIGNATURE_MAX_SIZE ( PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE + 11 )
-#endif
-#endif /* defined(MBEDTLS_USE_PSA_CRYPTO) */
-
-/**
- * \brief           Types for interfacing with the debug module
- */
-typedef enum
-{
-    MBEDTLS_PK_DEBUG_NONE = 0,
-    MBEDTLS_PK_DEBUG_MPI,
-    MBEDTLS_PK_DEBUG_ECP,
-} mbedtls_pk_debug_type;
-
-/**
- * \brief           Item to send to the debug module
- */
-typedef struct mbedtls_pk_debug_item
-{
-    mbedtls_pk_debug_type type;
-    const char *name;
-    void *value;
-} mbedtls_pk_debug_item;
-
-/** Maximum number of item send for debugging, plus 1 */
-#define MBEDTLS_PK_DEBUG_MAX_ITEMS 3
-
-/**
- * \brief           Public key information and operations
- */
-typedef struct mbedtls_pk_info_t mbedtls_pk_info_t;
-
-/**
- * \brief           Public key container
- */
-typedef struct mbedtls_pk_context
-{
-    const mbedtls_pk_info_t *   pk_info; /**< Public key information         */
-    void *                      pk_ctx;  /**< Underlying public key context  */
-} mbedtls_pk_context;
-
-#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
-/**
- * \brief           Context for resuming operations
- */
-typedef struct
-{
-    const mbedtls_pk_info_t *   pk_info; /**< Public key information         */
-    void *                      rs_ctx;  /**< Underlying restart context     */
-} mbedtls_pk_restart_ctx;
-#else /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */
-/* Now we can declare functions that take a pointer to that */
-typedef void mbedtls_pk_restart_ctx;
-#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */
-
-#if defined(MBEDTLS_RSA_C)
-/**
- * Quick access to an RSA context inside a PK context.
- *
- * \warning You must make sure the PK context actually holds an RSA context
- * before using this function!
- */
-static inline mbedtls_rsa_context *mbedtls_pk_rsa( const mbedtls_pk_context pk )
-{
-    return( (mbedtls_rsa_context *) (pk).pk_ctx );
-}
-#endif /* MBEDTLS_RSA_C */
-
-#if defined(MBEDTLS_ECP_C)
-/**
- * Quick access to an EC context inside a PK context.
- *
- * \warning You must make sure the PK context actually holds an EC context
- * before using this function!
- */
-static inline mbedtls_ecp_keypair *mbedtls_pk_ec( const mbedtls_pk_context pk )
-{
-    return( (mbedtls_ecp_keypair *) (pk).pk_ctx );
-}
-#endif /* MBEDTLS_ECP_C */
-
-#if defined(MBEDTLS_PK_RSA_ALT_SUPPORT)
-/**
- * \brief           Types for RSA-alt abstraction
- */
-typedef int (*mbedtls_pk_rsa_alt_decrypt_func)( void *ctx, int mode, size_t *olen,
-                    const unsigned char *input, unsigned char *output,
-                    size_t output_max_len );
-typedef int (*mbedtls_pk_rsa_alt_sign_func)( void *ctx,
-                    int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
-                    int mode, mbedtls_md_type_t md_alg, unsigned int hashlen,
-                    const unsigned char *hash, unsigned char *sig );
-typedef size_t (*mbedtls_pk_rsa_alt_key_len_func)( void *ctx );
-#endif /* MBEDTLS_PK_RSA_ALT_SUPPORT */
-
-/**
- * \brief           Return information associated with the given PK type
- *
- * \param pk_type   PK type to search for.
- *
- * \return          The PK info associated with the type or NULL if not found.
- */
-const mbedtls_pk_info_t *mbedtls_pk_info_from_type( mbedtls_pk_type_t pk_type );
-
-/**
- * \brief           Initialize a #mbedtls_pk_context (as NONE).
- *
- * \param ctx       The context to initialize.
- *                  This must not be \c NULL.
- */
-void mbedtls_pk_init( mbedtls_pk_context *ctx );
-
-/**
- * \brief           Free the components of a #mbedtls_pk_context.
- *
- * \param ctx       The context to clear. It must have been initialized.
- *                  If this is \c NULL, this function does nothing.
- *
- * \note            For contexts that have been set up with
- *                  mbedtls_pk_setup_opaque(), this does not free the underlying
- *                  PSA key and you still need to call psa_destroy_key()
- *                  independently if you want to destroy that key.
- */
-void mbedtls_pk_free( mbedtls_pk_context *ctx );
-
-#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
-/**
- * \brief           Initialize a restart context
- *
- * \param ctx       The context to initialize.
- *                  This must not be \c NULL.
- */
-void mbedtls_pk_restart_init( mbedtls_pk_restart_ctx *ctx );
-
-/**
- * \brief           Free the components of a restart context
- *
- * \param ctx       The context to clear. It must have been initialized.
- *                  If this is \c NULL, this function does nothing.
- */
-void mbedtls_pk_restart_free( mbedtls_pk_restart_ctx *ctx );
-#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */
-
-/**
- * \brief           Initialize a PK context with the information given
- *                  and allocates the type-specific PK subcontext.
- *
- * \param ctx       Context to initialize. It must not have been set
- *                  up yet (type #MBEDTLS_PK_NONE).
- * \param info      Information to use
- *
- * \return          0 on success,
- *                  MBEDTLS_ERR_PK_BAD_INPUT_DATA on invalid input,
- *                  MBEDTLS_ERR_PK_ALLOC_FAILED on allocation failure.
- *
- * \note            For contexts holding an RSA-alt key, use
- *                  \c mbedtls_pk_setup_rsa_alt() instead.
- */
-int mbedtls_pk_setup( mbedtls_pk_context *ctx, const mbedtls_pk_info_t *info );
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-/**
- * \brief           Initialize a PK context to wrap a PSA key.
- *
- * \note            This function replaces mbedtls_pk_setup() for contexts
- *                  that wrap a (possibly opaque) PSA key instead of
- *                  storing and manipulating the key material directly.
- *
- * \param ctx       The context to initialize. It must be empty (type NONE).
- * \param key       The PSA key to wrap, which must hold an ECC key pair
- *                  (see notes below).
- *
- * \note            The wrapped key must remain valid as long as the
- *                  wrapping PK context is in use, that is at least between
- *                  the point this function is called and the point
- *                  mbedtls_pk_free() is called on this context. The wrapped
- *                  key might then be independently used or destroyed.
- *
- * \note            This function is currently only available for ECC key
- *                  pairs (that is, ECC keys containing private key material).
- *                  Support for other key types may be added later.
- *
- * \return          \c 0 on success.
- * \return          #MBEDTLS_ERR_PK_BAD_INPUT_DATA on invalid input
- *                  (context already used, invalid key identifier).
- * \return          #MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE if the key is not an
- *                  ECC key pair.
- * \return          #MBEDTLS_ERR_PK_ALLOC_FAILED on allocation failure.
- */
-int mbedtls_pk_setup_opaque( mbedtls_pk_context *ctx,
-                             const psa_key_id_t key );
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-
-#if defined(MBEDTLS_PK_RSA_ALT_SUPPORT)
-/**
- * \brief           Initialize an RSA-alt context
- *
- * \param ctx       Context to initialize. It must not have been set
- *                  up yet (type #MBEDTLS_PK_NONE).
- * \param key       RSA key pointer
- * \param decrypt_func  Decryption function
- * \param sign_func     Signing function
- * \param key_len_func  Function returning key length in bytes
- *
- * \return          0 on success, or MBEDTLS_ERR_PK_BAD_INPUT_DATA if the
- *                  context wasn't already initialized as RSA_ALT.
- *
- * \note            This function replaces \c mbedtls_pk_setup() for RSA-alt.
- */
-int mbedtls_pk_setup_rsa_alt( mbedtls_pk_context *ctx, void * key,
-                         mbedtls_pk_rsa_alt_decrypt_func decrypt_func,
-                         mbedtls_pk_rsa_alt_sign_func sign_func,
-                         mbedtls_pk_rsa_alt_key_len_func key_len_func );
-#endif /* MBEDTLS_PK_RSA_ALT_SUPPORT */
-
-/**
- * \brief           Get the size in bits of the underlying key
- *
- * \param ctx       The context to query. It must have been initialized.
- *
- * \return          Key size in bits, or 0 on error
- */
-size_t mbedtls_pk_get_bitlen( const mbedtls_pk_context *ctx );
-
-/**
- * \brief           Get the length in bytes of the underlying key
- *
- * \param ctx       The context to query. It must have been initialized.
- *
- * \return          Key length in bytes, or 0 on error
- */
-static inline size_t mbedtls_pk_get_len( const mbedtls_pk_context *ctx )
-{
-    return( ( mbedtls_pk_get_bitlen( ctx ) + 7 ) / 8 );
-}
-
-/**
- * \brief           Tell if a context can do the operation given by type
- *
- * \param ctx       The context to query. It must have been initialized.
- * \param type      The desired type.
- *
- * \return          1 if the context can do operations on the given type.
- * \return          0 if the context cannot do the operations on the given
- *                  type. This is always the case for a context that has
- *                  been initialized but not set up, or that has been
- *                  cleared with mbedtls_pk_free().
- */
-int mbedtls_pk_can_do( const mbedtls_pk_context *ctx, mbedtls_pk_type_t type );
-
-/**
- * \brief           Verify signature (including padding if relevant).
- *
- * \param ctx       The PK context to use. It must have been set up.
- * \param md_alg    Hash algorithm used (see notes)
- * \param hash      Hash of the message to sign
- * \param hash_len  Hash length or 0 (see notes)
- * \param sig       Signature to verify
- * \param sig_len   Signature length
- *
- * \return          0 on success (signature is valid),
- *                  #MBEDTLS_ERR_PK_SIG_LEN_MISMATCH if there is a valid
- *                  signature in sig but its length is less than \p siglen,
- *                  or a specific error code.
- *
- * \note            For RSA keys, the default padding type is PKCS#1 v1.5.
- *                  Use \c mbedtls_pk_verify_ext( MBEDTLS_PK_RSASSA_PSS, ... )
- *                  to verify RSASSA_PSS signatures.
- *
- * \note            If hash_len is 0, then the length associated with md_alg
- *                  is used instead, or an error returned if it is invalid.
- *
- * \note            md_alg may be MBEDTLS_MD_NONE, only if hash_len != 0
- */
-int mbedtls_pk_verify( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
-               const unsigned char *hash, size_t hash_len,
-               const unsigned char *sig, size_t sig_len );
-
-/**
- * \brief           Restartable version of \c mbedtls_pk_verify()
- *
- * \note            Performs the same job as \c mbedtls_pk_verify(), but can
- *                  return early and restart according to the limit set with
- *                  \c mbedtls_ecp_set_max_ops() to reduce blocking for ECC
- *                  operations. For RSA, same as \c mbedtls_pk_verify().
- *
- * \param ctx       The PK context to use. It must have been set up.
- * \param md_alg    Hash algorithm used (see notes)
- * \param hash      Hash of the message to sign
- * \param hash_len  Hash length or 0 (see notes)
- * \param sig       Signature to verify
- * \param sig_len   Signature length
- * \param rs_ctx    Restart context (NULL to disable restart)
- *
- * \return          See \c mbedtls_pk_verify(), or
- * \return          #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of
- *                  operations was reached: see \c mbedtls_ecp_set_max_ops().
- */
-int mbedtls_pk_verify_restartable( mbedtls_pk_context *ctx,
-               mbedtls_md_type_t md_alg,
-               const unsigned char *hash, size_t hash_len,
-               const unsigned char *sig, size_t sig_len,
-               mbedtls_pk_restart_ctx *rs_ctx );
-
-/**
- * \brief           Verify signature, with options.
- *                  (Includes verification of the padding depending on type.)
- *
- * \param type      Signature type (inc. possible padding type) to verify
- * \param options   Pointer to type-specific options, or NULL
- * \param ctx       The PK context to use. It must have been set up.
- * \param md_alg    Hash algorithm used (see notes)
- * \param hash      Hash of the message to sign
- * \param hash_len  Hash length or 0 (see notes)
- * \param sig       Signature to verify
- * \param sig_len   Signature length
- *
- * \return          0 on success (signature is valid),
- *                  #MBEDTLS_ERR_PK_TYPE_MISMATCH if the PK context can't be
- *                  used for this type of signatures,
- *                  #MBEDTLS_ERR_PK_SIG_LEN_MISMATCH if there is a valid
- *                  signature in sig but its length is less than \p siglen,
- *                  or a specific error code.
- *
- * \note            If hash_len is 0, then the length associated with md_alg
- *                  is used instead, or an error returned if it is invalid.
- *
- * \note            md_alg may be MBEDTLS_MD_NONE, only if hash_len != 0
- *
- * \note            If type is MBEDTLS_PK_RSASSA_PSS, then options must point
- *                  to a mbedtls_pk_rsassa_pss_options structure,
- *                  otherwise it must be NULL.
- */
-int mbedtls_pk_verify_ext( mbedtls_pk_type_t type, const void *options,
-                   mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
-                   const unsigned char *hash, size_t hash_len,
-                   const unsigned char *sig, size_t sig_len );
-
-/**
- * \brief           Make signature, including padding if relevant.
- *
- * \param ctx       The PK context to use. It must have been set up
- *                  with a private key.
- * \param md_alg    Hash algorithm used (see notes)
- * \param hash      Hash of the message to sign
- * \param hash_len  Hash length or 0 (see notes)
- * \param sig       Place to write the signature.
- *                  It must have enough room for the signature.
- *                  #MBEDTLS_PK_SIGNATURE_MAX_SIZE is always enough.
- *                  You may use a smaller buffer if it is large enough
- *                  given the key type.
- * \param sig_len   On successful return,
- *                  the number of bytes written to \p sig.
- * \param f_rng     RNG function
- * \param p_rng     RNG parameter
- *
- * \return          0 on success, or a specific error code.
- *
- * \note            For RSA keys, the default padding type is PKCS#1 v1.5.
- *                  There is no interface in the PK module to make RSASSA-PSS
- *                  signatures yet.
- *
- * \note            If hash_len is 0, then the length associated with md_alg
- *                  is used instead, or an error returned if it is invalid.
- *
- * \note            For RSA, md_alg may be MBEDTLS_MD_NONE if hash_len != 0.
- *                  For ECDSA, md_alg may never be MBEDTLS_MD_NONE.
- */
-int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
-             const unsigned char *hash, size_t hash_len,
-             unsigned char *sig, size_t *sig_len,
-             int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
-
-/**
- * \brief           Restartable version of \c mbedtls_pk_sign()
- *
- * \note            Performs the same job as \c mbedtls_pk_sign(), but can
- *                  return early and restart according to the limit set with
- *                  \c mbedtls_ecp_set_max_ops() to reduce blocking for ECC
- *                  operations. For RSA, same as \c mbedtls_pk_sign().
- *
- * \param ctx       The PK context to use. It must have been set up
- *                  with a private key.
- * \param md_alg    Hash algorithm used (see notes for mbedtls_pk_sign())
- * \param hash      Hash of the message to sign
- * \param hash_len  Hash length or 0 (see notes for mbedtls_pk_sign())
- * \param sig       Place to write the signature.
- *                  It must have enough room for the signature.
- *                  #MBEDTLS_PK_SIGNATURE_MAX_SIZE is always enough.
- *                  You may use a smaller buffer if it is large enough
- *                  given the key type.
- * \param sig_len   On successful return,
- *                  the number of bytes written to \p sig.
- * \param f_rng     RNG function
- * \param p_rng     RNG parameter
- * \param rs_ctx    Restart context (NULL to disable restart)
- *
- * \return          See \c mbedtls_pk_sign().
- * \return          #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of
- *                  operations was reached: see \c mbedtls_ecp_set_max_ops().
- */
-int mbedtls_pk_sign_restartable( mbedtls_pk_context *ctx,
-             mbedtls_md_type_t md_alg,
-             const unsigned char *hash, size_t hash_len,
-             unsigned char *sig, size_t *sig_len,
-             int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
-             mbedtls_pk_restart_ctx *rs_ctx );
-
-/**
- * \brief           Decrypt message (including padding if relevant).
- *
- * \param ctx       The PK context to use. It must have been set up
- *                  with a private key.
- * \param input     Input to decrypt
- * \param ilen      Input size
- * \param output    Decrypted output
- * \param olen      Decrypted message length
- * \param osize     Size of the output buffer
- * \param f_rng     RNG function
- * \param p_rng     RNG parameter
- *
- * \note            For RSA keys, the default padding type is PKCS#1 v1.5.
- *
- * \return          0 on success, or a specific error code.
- */
-int mbedtls_pk_decrypt( mbedtls_pk_context *ctx,
-                const unsigned char *input, size_t ilen,
-                unsigned char *output, size_t *olen, size_t osize,
-                int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
-
-/**
- * \brief           Encrypt message (including padding if relevant).
- *
- * \param ctx       The PK context to use. It must have been set up.
- * \param input     Message to encrypt
- * \param ilen      Message size
- * \param output    Encrypted output
- * \param olen      Encrypted output length
- * \param osize     Size of the output buffer
- * \param f_rng     RNG function
- * \param p_rng     RNG parameter
- *
- * \note            For RSA keys, the default padding type is PKCS#1 v1.5.
- *
- * \return          0 on success, or a specific error code.
- */
-int mbedtls_pk_encrypt( mbedtls_pk_context *ctx,
-                const unsigned char *input, size_t ilen,
-                unsigned char *output, size_t *olen, size_t osize,
-                int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
-
-/**
- * \brief           Check if a public-private pair of keys matches.
- *
- * \param pub       Context holding a public key.
- * \param prv       Context holding a private (and public) key.
- *
- * \return          \c 0 on success (keys were checked and match each other).
- * \return          #MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE if the keys could not
- *                  be checked - in that case they may or may not match.
- * \return          #MBEDTLS_ERR_PK_BAD_INPUT_DATA if a context is invalid.
- * \return          Another non-zero value if the keys do not match.
- */
-int mbedtls_pk_check_pair( const mbedtls_pk_context *pub, const mbedtls_pk_context *prv );
-
-/**
- * \brief           Export debug information
- *
- * \param ctx       The PK context to use. It must have been initialized.
- * \param items     Place to write debug items
- *
- * \return          0 on success or MBEDTLS_ERR_PK_BAD_INPUT_DATA
- */
-int mbedtls_pk_debug( const mbedtls_pk_context *ctx, mbedtls_pk_debug_item *items );
-
-/**
- * \brief           Access the type name
- *
- * \param ctx       The PK context to use. It must have been initialized.
- *
- * \return          Type name on success, or "invalid PK"
- */
-const char * mbedtls_pk_get_name( const mbedtls_pk_context *ctx );
-
-/**
- * \brief           Get the key type
- *
- * \param ctx       The PK context to use. It must have been initialized.
- *
- * \return          Type on success.
- * \return          #MBEDTLS_PK_NONE for a context that has not been set up.
- */
-mbedtls_pk_type_t mbedtls_pk_get_type( const mbedtls_pk_context *ctx );
-
-#if defined(MBEDTLS_PK_PARSE_C)
-/** \ingroup pk_module */
-/**
- * \brief           Parse a private key in PEM or DER format
- *
- * \param ctx       The PK context to fill. It must have been initialized
- *                  but not set up.
- * \param key       Input buffer to parse.
- *                  The buffer must contain the input exactly, with no
- *                  extra trailing material. For PEM, the buffer must
- *                  contain a null-terminated string.
- * \param keylen    Size of \b key in bytes.
- *                  For PEM data, this includes the terminating null byte,
- *                  so \p keylen must be equal to `strlen(key) + 1`.
- * \param pwd       Optional password for decryption.
- *                  Pass \c NULL if expecting a non-encrypted key.
- *                  Pass a string of \p pwdlen bytes if expecting an encrypted
- *                  key; a non-encrypted key will also be accepted.
- *                  The empty password is not supported.
- * \param pwdlen    Size of the password in bytes.
- *                  Ignored if \p pwd is \c NULL.
- *
- * \note            On entry, ctx must be empty, either freshly initialised
- *                  with mbedtls_pk_init() or reset with mbedtls_pk_free(). If you need a
- *                  specific key type, check the result with mbedtls_pk_can_do().
- *
- * \note            The key is also checked for correctness.
- *
- * \return          0 if successful, or a specific PK or PEM error code
- */
-int mbedtls_pk_parse_key( mbedtls_pk_context *ctx,
-                  const unsigned char *key, size_t keylen,
-                  const unsigned char *pwd, size_t pwdlen );
-
-/** \ingroup pk_module */
-/**
- * \brief           Parse a public key in PEM or DER format
- *
- * \param ctx       The PK context to fill. It must have been initialized
- *                  but not set up.
- * \param key       Input buffer to parse.
- *                  The buffer must contain the input exactly, with no
- *                  extra trailing material. For PEM, the buffer must
- *                  contain a null-terminated string.
- * \param keylen    Size of \b key in bytes.
- *                  For PEM data, this includes the terminating null byte,
- *                  so \p keylen must be equal to `strlen(key) + 1`.
- *
- * \note            On entry, ctx must be empty, either freshly initialised
- *                  with mbedtls_pk_init() or reset with mbedtls_pk_free(). If you need a
- *                  specific key type, check the result with mbedtls_pk_can_do().
- *
- * \note            The key is also checked for correctness.
- *
- * \return          0 if successful, or a specific PK or PEM error code
- */
-int mbedtls_pk_parse_public_key( mbedtls_pk_context *ctx,
-                         const unsigned char *key, size_t keylen );
-
-#if defined(MBEDTLS_FS_IO)
-/** \ingroup pk_module */
-/**
- * \brief           Load and parse a private key
- *
- * \param ctx       The PK context to fill. It must have been initialized
- *                  but not set up.
- * \param path      filename to read the private key from
- * \param password  Optional password to decrypt the file.
- *                  Pass \c NULL if expecting a non-encrypted key.
- *                  Pass a null-terminated string if expecting an encrypted
- *                  key; a non-encrypted key will also be accepted.
- *                  The empty password is not supported.
- *
- * \note            On entry, ctx must be empty, either freshly initialised
- *                  with mbedtls_pk_init() or reset with mbedtls_pk_free(). If you need a
- *                  specific key type, check the result with mbedtls_pk_can_do().
- *
- * \note            The key is also checked for correctness.
- *
- * \return          0 if successful, or a specific PK or PEM error code
- */
-int mbedtls_pk_parse_keyfile( mbedtls_pk_context *ctx,
-                      const char *path, const char *password );
-
-/** \ingroup pk_module */
-/**
- * \brief           Load and parse a public key
- *
- * \param ctx       The PK context to fill. It must have been initialized
- *                  but not set up.
- * \param path      filename to read the public key from
- *
- * \note            On entry, ctx must be empty, either freshly initialised
- *                  with mbedtls_pk_init() or reset with mbedtls_pk_free(). If
- *                  you need a specific key type, check the result with
- *                  mbedtls_pk_can_do().
- *
- * \note            The key is also checked for correctness.
- *
- * \return          0 if successful, or a specific PK or PEM error code
- */
-int mbedtls_pk_parse_public_keyfile( mbedtls_pk_context *ctx, const char *path );
-#endif /* MBEDTLS_FS_IO */
-#endif /* MBEDTLS_PK_PARSE_C */
-
-#if defined(MBEDTLS_PK_WRITE_C)
-/**
- * \brief           Write a private key to a PKCS#1 or SEC1 DER structure
- *                  Note: data is written at the end of the buffer! Use the
- *                        return value to determine where you should start
- *                        using the buffer
- *
- * \param ctx       PK context which must contain a valid private key.
- * \param buf       buffer to write to
- * \param size      size of the buffer
- *
- * \return          length of data written if successful, or a specific
- *                  error code
- */
-int mbedtls_pk_write_key_der( mbedtls_pk_context *ctx, unsigned char *buf, size_t size );
-
-/**
- * \brief           Write a public key to a SubjectPublicKeyInfo DER structure
- *                  Note: data is written at the end of the buffer! Use the
- *                        return value to determine where you should start
- *                        using the buffer
- *
- * \param ctx       PK context which must contain a valid public or private key.
- * \param buf       buffer to write to
- * \param size      size of the buffer
- *
- * \return          length of data written if successful, or a specific
- *                  error code
- */
-int mbedtls_pk_write_pubkey_der( mbedtls_pk_context *ctx, unsigned char *buf, size_t size );
-
-#if defined(MBEDTLS_PEM_WRITE_C)
-/**
- * \brief           Write a public key to a PEM string
- *
- * \param ctx       PK context which must contain a valid public or private key.
- * \param buf       Buffer to write to. The output includes a
- *                  terminating null byte.
- * \param size      Size of the buffer in bytes.
- *
- * \return          0 if successful, or a specific error code
- */
-int mbedtls_pk_write_pubkey_pem( mbedtls_pk_context *ctx, unsigned char *buf, size_t size );
-
-/**
- * \brief           Write a private key to a PKCS#1 or SEC1 PEM string
- *
- * \param ctx       PK context which must contain a valid private key.
- * \param buf       Buffer to write to. The output includes a
- *                  terminating null byte.
- * \param size      Size of the buffer in bytes.
- *
- * \return          0 if successful, or a specific error code
- */
-int mbedtls_pk_write_key_pem( mbedtls_pk_context *ctx, unsigned char *buf, size_t size );
-#endif /* MBEDTLS_PEM_WRITE_C */
-#endif /* MBEDTLS_PK_WRITE_C */
-
-/*
- * WARNING: Low-level functions. You probably do not want to use these unless
- *          you are certain you do ;)
- */
-
-#if defined(MBEDTLS_PK_PARSE_C)
-/**
- * \brief           Parse a SubjectPublicKeyInfo DER structure
- *
- * \param p         the position in the ASN.1 data
- * \param end       end of the buffer
- * \param pk        The PK context to fill. It must have been initialized
- *                  but not set up.
- *
- * \return          0 if successful, or a specific PK error code
- */
-int mbedtls_pk_parse_subpubkey( unsigned char **p, const unsigned char *end,
-                        mbedtls_pk_context *pk );
-#endif /* MBEDTLS_PK_PARSE_C */
-
-#if defined(MBEDTLS_PK_WRITE_C)
-/**
- * \brief           Write a subjectPublicKey to ASN.1 data
- *                  Note: function works backwards in data buffer
- *
- * \param p         reference to current position pointer
- * \param start     start of the buffer (for bounds-checking)
- * \param key       PK context which must contain a valid public or private key.
- *
- * \return          the length written or a negative error code
- */
-int mbedtls_pk_write_pubkey( unsigned char **p, unsigned char *start,
-                     const mbedtls_pk_context *key );
-#endif /* MBEDTLS_PK_WRITE_C */
-
-/*
- * Internal module functions. You probably do not want to use these unless you
- * know you do.
- */
-#if defined(MBEDTLS_FS_IO)
-int mbedtls_pk_load_file( const char *path, unsigned char **buf, size_t *n );
-#endif
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-/**
- * \brief           Turn an EC key into an opaque one.
- *
- * \warning         This is a temporary utility function for tests. It might
- *                  change or be removed at any time without notice.
- *
- * \note            Only ECDSA keys are supported so far. Signing with the
- *                  specified hash is the only allowed use of that key.
- *
- * \param pk        Input: the EC key to import to a PSA key.
- *                  Output: a PK context wrapping that PSA key.
- * \param key       Output: a PSA key identifier.
- *                  It's the caller's responsibility to call
- *                  psa_destroy_key() on that key identifier after calling
- *                  mbedtls_pk_free() on the PK context.
- * \param hash_alg  The hash algorithm to allow for use with that key.
- *
- * \return          \c 0 if successful.
- * \return          An Mbed TLS error code otherwise.
- */
-int mbedtls_pk_wrap_as_opaque( mbedtls_pk_context *pk,
-                               psa_key_id_t *key,
-                               psa_algorithm_t hash_alg );
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* MBEDTLS_PK_H */