| /** |
| * \file sha512.h |
| * \brief This file contains SHA-384 and SHA-512 definitions and functions. |
| * |
| * The Secure Hash Algorithms 384 and 512 (SHA-384 and SHA-512) cryptographic |
| * hash functions are defined in <em>FIPS 180-4: Secure Hash Standard (SHS)</em>. |
| */ |
| /* |
| * 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_SHA512_H |
| #define MBEDTLS_SHA512_H |
| #include "mbedtls/private_access.h" |
| |
| #include "mbedtls/build_info.h" |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #define MBEDTLS_ERR_SHA512_BAD_INPUT_DATA -0x0075 /**< SHA-512 input data was malformed. */ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #if !defined(MBEDTLS_SHA512_ALT) |
| // Regular implementation |
| // |
| |
| /** |
| * \brief The SHA-512 context structure. |
| * |
| * The structure is used both for SHA-384 and for SHA-512 |
| * checksum calculations. The choice between these two is |
| * made in the call to mbedtls_sha512_starts(). |
| */ |
| typedef struct mbedtls_sha512_context |
| { |
| uint64_t MBEDTLS_PRIVATE(total)[2]; /*!< The number of Bytes processed. */ |
| uint64_t MBEDTLS_PRIVATE(state)[8]; /*!< The intermediate digest state. */ |
| unsigned char MBEDTLS_PRIVATE(buffer)[128]; /*!< The data block being processed. */ |
| #if defined(MBEDTLS_SHA384_C) |
| int MBEDTLS_PRIVATE(is384); /*!< Determines which function to use: |
| 0: Use SHA-512, or 1: Use SHA-384. */ |
| #endif |
| } |
| mbedtls_sha512_context; |
| |
| #else /* MBEDTLS_SHA512_ALT */ |
| #include "sha512_alt.h" |
| #endif /* MBEDTLS_SHA512_ALT */ |
| |
| /** |
| * \brief This function initializes a SHA-512 context. |
| * |
| * \param ctx The SHA-512 context to initialize. This must |
| * not be \c NULL. |
| */ |
| void mbedtls_sha512_init( mbedtls_sha512_context *ctx ); |
| |
| /** |
| * \brief This function clears a SHA-512 context. |
| * |
| * \param ctx The SHA-512 context to clear. This may be \c NULL, |
| * in which case this function does nothing. If it |
| * is not \c NULL, it must point to an initialized |
| * SHA-512 context. |
| */ |
| void mbedtls_sha512_free( mbedtls_sha512_context *ctx ); |
| |
| /** |
| * \brief This function clones the state of a SHA-512 context. |
| * |
| * \param dst The destination context. This must be initialized. |
| * \param src The context to clone. This must be initialized. |
| */ |
| void mbedtls_sha512_clone( mbedtls_sha512_context *dst, |
| const mbedtls_sha512_context *src ); |
| |
| /** |
| * \brief This function starts a SHA-384 or SHA-512 checksum |
| * calculation. |
| * |
| * \param ctx The SHA-512 context to use. This must be initialized. |
| * \param is384 Determines which function to use. This must be |
| * either \c 0 for SHA-512, or \c 1 for SHA-384. |
| * |
| * \note When \c MBEDTLS_SHA384_C is not defined, |
| * \p is384 must be \c 0, or the function will return |
| * #MBEDTLS_ERR_SHA512_BAD_INPUT_DATA. |
| * |
| * \return \c 0 on success. |
| * \return A negative error code on failure. |
| */ |
| int mbedtls_sha512_starts( mbedtls_sha512_context *ctx, int is384 ); |
| |
| /** |
| * \brief This function feeds an input buffer into an ongoing |
| * SHA-512 checksum calculation. |
| * |
| * \param ctx The SHA-512 context. This must be initialized |
| * and have a hash operation started. |
| * \param input The buffer holding the input data. This must |
| * be a readable buffer of length \p ilen Bytes. |
| * \param ilen The length of the input data in Bytes. |
| * |
| * \return \c 0 on success. |
| * \return A negative error code on failure. |
| */ |
| int mbedtls_sha512_update( mbedtls_sha512_context *ctx, |
| const unsigned char *input, |
| size_t ilen ); |
| |
| /** |
| * \brief This function finishes the SHA-512 operation, and writes |
| * the result to the output buffer. |
| * |
| * \param ctx The SHA-512 context. This must be initialized |
| * and have a hash operation started. |
| * \param output The SHA-384 or SHA-512 checksum result. |
| * This must be a writable buffer of length \c 64 bytes |
| * for SHA-512, \c 48 bytes for SHA-384. |
| * |
| * \return \c 0 on success. |
| * \return A negative error code on failure. |
| */ |
| int mbedtls_sha512_finish( mbedtls_sha512_context *ctx, |
| unsigned char *output ); |
| |
| /** |
| * \brief This function processes a single data block within |
| * the ongoing SHA-512 computation. |
| * This function is for internal use only. |
| * |
| * \param ctx The SHA-512 context. This must be initialized. |
| * \param data The buffer holding one block of data. This |
| * must be a readable buffer of length \c 128 Bytes. |
| * |
| * \return \c 0 on success. |
| * \return A negative error code on failure. |
| */ |
| int mbedtls_internal_sha512_process( mbedtls_sha512_context *ctx, |
| const unsigned char data[128] ); |
| |
| /** |
| * \brief This function calculates the SHA-512 or SHA-384 |
| * checksum of a buffer. |
| * |
| * The function allocates the context, performs the |
| * calculation, and frees the context. |
| * |
| * The SHA-512 result is calculated as |
| * output = SHA-512(input buffer). |
| * |
| * \param input The buffer holding the input data. This must be |
| * a readable buffer of length \p ilen Bytes. |
| * \param ilen The length of the input data in Bytes. |
| * \param output The SHA-384 or SHA-512 checksum result. |
| * This must be a writable buffer of length \c 64 bytes |
| * for SHA-512, \c 48 bytes for SHA-384. |
| * \param is384 Determines which function to use. This must be either |
| * \c 0 for SHA-512, or \c 1 for SHA-384. |
| * |
| * \note When \c MBEDTLS_SHA384_C is not defined, \p is384 must |
| * be \c 0, or the function will return |
| * #MBEDTLS_ERR_SHA512_BAD_INPUT_DATA. |
| * |
| * \return \c 0 on success. |
| * \return A negative error code on failure. |
| */ |
| int mbedtls_sha512( const unsigned char *input, |
| size_t ilen, |
| unsigned char *output, |
| int is384 ); |
| |
| #if defined(MBEDTLS_SELF_TEST) |
| |
| /** |
| * \brief The SHA-384 or SHA-512 checkup routine. |
| * |
| * \return \c 0 on success. |
| * \return \c 1 on failure. |
| */ |
| int mbedtls_sha512_self_test( int verbose ); |
| #endif /* MBEDTLS_SELF_TEST */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* mbedtls_sha512.h */ |
