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Diff: targets/TARGET_NUVOTON/TARGET_NUC472/crypto/sha/sha256_alt_sw.h
- Revision:
- 149:156823d33999
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/TARGET_NUVOTON/TARGET_NUC472/crypto/sha/sha256_alt_sw.h Fri Oct 28 11:17:30 2016 +0100 @@ -0,0 +1,113 @@ +/** + * \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 */