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Diffstat (limited to 'lib/mbedtls-2.27.0/library/psa_crypto_random_impl.h')
| -rw-r--r-- | lib/mbedtls-2.27.0/library/psa_crypto_random_impl.h | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/lib/mbedtls-2.27.0/library/psa_crypto_random_impl.h b/lib/mbedtls-2.27.0/library/psa_crypto_random_impl.h deleted file mode 100644 index 3c4c09a..0000000 --- a/lib/mbedtls-2.27.0/library/psa_crypto_random_impl.h +++ /dev/null @@ -1,205 +0,0 @@ -/** \file psa_crypto_random_impl.h - * - * \brief PSA crypto random generator implementation abstraction. - * - * The definitions here need to be consistent with the declarations - * in include/mbedtls/psa_util.h. This file contains some redundant - * declarations to increase the chance that a compiler will detect - * inconsistencies if one file is changed without updating the other, - * but not all potential inconsistencies can be enforced, so make sure - * to check the public declarations and contracts in - * include/mbedtls/psa_util.h if you modify this file. - */ -/* - * 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_RANDOM_IMPL_H -#define PSA_CRYPTO_RANDOM_IMPL_H - -#include <mbedtls/psa_util.h> - -#if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) - -#include <string.h> -#include <mbedtls/entropy.h> // only for error codes -#include <psa/crypto.h> - -typedef mbedtls_psa_external_random_context_t mbedtls_psa_random_context_t; - -/* Trivial wrapper around psa_generate_random(). */ -int mbedtls_psa_get_random( void *p_rng, - unsigned char *output, - size_t output_size ); - -/* The PSA RNG API doesn't need any externally maintained state. */ -#define MBEDTLS_PSA_RANDOM_STATE NULL - -#else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ - -/* Choose a DRBG based on configuration and availability */ -#if defined(MBEDTLS_PSA_HMAC_DRBG_MD_TYPE) - -#include "mbedtls/hmac_drbg.h" - -#elif defined(MBEDTLS_CTR_DRBG_C) - -#include "mbedtls/ctr_drbg.h" - -#elif defined(MBEDTLS_HMAC_DRBG_C) - -#include "mbedtls/hmac_drbg.h" -#if defined(MBEDTLS_SHA512_C) && defined(MBEDTLS_SHA256_C) -#include <limits.h> -#if SIZE_MAX > 0xffffffff -/* Looks like a 64-bit system, so prefer SHA-512. */ -#define MBEDTLS_PSA_HMAC_DRBG_MD_TYPE MBEDTLS_MD_SHA512 -#else -/* Looks like a 32-bit system, so prefer SHA-256. */ -#define MBEDTLS_PSA_HMAC_DRBG_MD_TYPE MBEDTLS_MD_SHA256 -#endif -#elif defined(MBEDTLS_SHA512_C) -#define MBEDTLS_PSA_HMAC_DRBG_MD_TYPE MBEDTLS_MD_SHA512 -#elif defined(MBEDTLS_SHA256_C) -#define MBEDTLS_PSA_HMAC_DRBG_MD_TYPE MBEDTLS_MD_SHA256 -#else -#error "No hash algorithm available for HMAC_DBRG." -#endif - -#else -#error "No DRBG module available for the psa_crypto module." -#endif - -#include "mbedtls/entropy.h" - -/** Initialize the PSA DRBG. - * - * \param p_rng Pointer to the Mbed TLS DRBG state. - */ -static inline void mbedtls_psa_drbg_init( mbedtls_psa_drbg_context_t *p_rng ) -{ -#if defined(MBEDTLS_CTR_DRBG_C) - mbedtls_ctr_drbg_init( p_rng ); -#elif defined(MBEDTLS_HMAC_DRBG_C) - mbedtls_hmac_drbg_init( p_rng ); -#endif -} - -/** Deinitialize the PSA DRBG. - * - * \param p_rng Pointer to the Mbed TLS DRBG state. - */ -static inline void mbedtls_psa_drbg_free( mbedtls_psa_drbg_context_t *p_rng ) -{ -#if defined(MBEDTLS_CTR_DRBG_C) - mbedtls_ctr_drbg_free( p_rng ); -#elif defined(MBEDTLS_HMAC_DRBG_C) - mbedtls_hmac_drbg_free( p_rng ); -#endif -} - -/** The type of the PSA random generator context. - * - * The random generator context is composed of an entropy context and - * a DRBG context. - */ -typedef struct -{ - void (* entropy_init )( mbedtls_entropy_context *ctx ); - void (* entropy_free )( mbedtls_entropy_context *ctx ); - mbedtls_entropy_context entropy; - mbedtls_psa_drbg_context_t drbg; -} mbedtls_psa_random_context_t; - -/* Defined in include/mbedtls/psa_util.h so that it's visible to - * application code. The declaration here is redundant, but included - * as a safety net to make it more likely that a future change that - * accidentally causes the implementation to diverge from the interface - * will be noticed. */ -/* Do not include the declaration under MSVC because it doesn't accept it - * ("error C2370: 'mbedtls_psa_get_random' : redefinition; different storage class"). - * Observed with Visual Studio 2013. A known bug apparently: - * https://stackoverflow.com/questions/8146541/duplicate-external-static-declarations-not-allowed-in-visual-studio - */ -#if !defined(_MSC_VER) -static mbedtls_f_rng_t *const mbedtls_psa_get_random; -#endif - -/** The maximum number of bytes that mbedtls_psa_get_random() is expected to - * return. - */ -#if defined(MBEDTLS_CTR_DRBG_C) -#define MBEDTLS_PSA_RANDOM_MAX_REQUEST MBEDTLS_CTR_DRBG_MAX_REQUEST -#elif defined(MBEDTLS_HMAC_DRBG_C) -#define MBEDTLS_PSA_RANDOM_MAX_REQUEST MBEDTLS_HMAC_DRBG_MAX_REQUEST -#endif - -/** A pointer to the PSA DRBG state. - * - * This variable is only intended to be used through the macro - * #MBEDTLS_PSA_RANDOM_STATE. - */ -/* psa_crypto.c sets this variable to a pointer to the DRBG state in the - * global PSA crypto state. */ -/* The type `mbedtls_psa_drbg_context_t` is defined in - * include/mbedtls/psa_util.h so that `mbedtls_psa_random_state` can be - * declared there and be visible to application code. */ -extern mbedtls_psa_drbg_context_t *const mbedtls_psa_random_state; - -/** A pointer to the PSA DRBG state. - * - * This macro expands to an expression that is suitable as the \c p_rng - * parameter to pass to mbedtls_psa_get_random(). - * - * This macro exists in all configurations where the psa_crypto module is - * enabled. Its expansion depends on the configuration. - */ -#define MBEDTLS_PSA_RANDOM_STATE mbedtls_psa_random_state - -/** Seed the PSA DRBG. - * - * \param entropy An entropy context to read the seed from. - * \param custom The personalization string. - * This can be \c NULL, in which case the personalization - * string is empty regardless of the value of \p len. - * \param len The length of the personalization string. - * - * \return \c 0 on success. - * \return An Mbed TLS error code (\c MBEDTLS_ERR_xxx) on failure. - */ -static inline int mbedtls_psa_drbg_seed( - mbedtls_entropy_context *entropy, - const unsigned char *custom, size_t len ) -{ -#if defined(MBEDTLS_CTR_DRBG_C) - return( mbedtls_ctr_drbg_seed( MBEDTLS_PSA_RANDOM_STATE, - mbedtls_entropy_func, - entropy, - custom, len ) ); -#elif defined(MBEDTLS_HMAC_DRBG_C) - const mbedtls_md_info_t *md_info = - mbedtls_md_info_from_type( MBEDTLS_PSA_HMAC_DRBG_MD_TYPE ); - return( mbedtls_hmac_drbg_seed( MBEDTLS_PSA_RANDOM_STATE, - md_info, - mbedtls_entropy_func, - entropy, - custom, len ) ); -#endif -} - -#endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ - -#endif /* PSA_CRYPTO_RANDOM_IMPL_H */ |