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targets/TARGET_NUVOTON/TARGET_NUC472/crypto/sha/sha256_alt_sw.h
- Committer:
- <>
- Date:
- 2016-12-15
- Revision:
- 152:9a67f0b066fc
- Parent:
- 149:156823d33999
File content as of revision 152:9a67f0b066fc:
/** * \file sha256.h * * \brief SHA-224 and SHA-256 cryptographic hash function * * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved * 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. * * This file is part of mbed TLS (https://tls.mbed.org) */ #ifndef MBEDTLS_SHA256_ALT_SW_H #define MBEDTLS_SHA256_ALT_SW_H #if !defined(MBEDTLS_CONFIG_FILE) #include "config.h" #else #include MBEDTLS_CONFIG_FILE #endif #if defined(MBEDTLS_SHA256_C) #if defined(MBEDTLS_SHA256_ALT) #include <stddef.h> #include <stdint.h> #ifdef __cplusplus extern "C" { #endif /** * \brief SHA-256 context structure */ typedef struct { uint32_t total[2]; /*!< number of bytes processed */ uint32_t state[8]; /*!< intermediate digest state */ unsigned char buffer[64]; /*!< data block being processed */ int is224; /*!< 0 => SHA-256, else SHA-224 */ } mbedtls_sha256_sw_context; /** * \brief Initialize SHA-256 context * * \param ctx SHA-256 context to be initialized */ void mbedtls_sha256_sw_init( mbedtls_sha256_sw_context *ctx ); /** * \brief Clear SHA-256 context * * \param ctx SHA-256 context to be cleared */ void mbedtls_sha256_sw_free( mbedtls_sha256_sw_context *ctx ); /** * \brief Clone (the state of) a SHA-256 context * * \param dst The destination context * \param src The context to be cloned */ void mbedtls_sha256_sw_clone( mbedtls_sha256_sw_context *dst, const mbedtls_sha256_sw_context *src ); /** * \brief SHA-256 context setup * * \param ctx context to be initialized * \param is224 0 = use SHA256, 1 = use SHA224 */ void mbedtls_sha256_sw_starts( mbedtls_sha256_sw_context *ctx, int is224 ); /** * \brief SHA-256 process buffer * * \param ctx SHA-256 context * \param input buffer holding the data * \param ilen length of the input data */ void mbedtls_sha256_sw_update( mbedtls_sha256_sw_context *ctx, const unsigned char *input, size_t ilen ); /** * \brief SHA-256 final digest * * \param ctx SHA-256 context * \param output SHA-224/256 checksum result */ void mbedtls_sha256_sw_finish( mbedtls_sha256_sw_context *ctx, unsigned char output[32] ); /* Internal use */ void mbedtls_sha256_sw_process( mbedtls_sha256_sw_context *ctx, const unsigned char data[64] ); #ifdef __cplusplus } #endif #endif /* MBEDTLS_SHA256_ALT */ #endif /* MBEDTLS_SHA256_C */ #endif /* sha256_alt_sw.h */