| /* |
| This file is part of libmicrohttpd |
| Copyright (C) 2019-2021 Karlson2k (Evgeny Grin) |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with this library. |
| If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| /** |
| * @file microhttpd/sha1.h |
| * @brief Calculation of SHA-1 digest |
| * @author Karlson2k (Evgeny Grin) |
| */ |
| |
| #ifndef MHD_SHA1_H |
| #define MHD_SHA1_H 1 |
| |
| #include "mhd_options.h" |
| #include <stdint.h> |
| #ifdef HAVE_STDDEF_H |
| #include <stddef.h> /* for size_t */ |
| #endif /* HAVE_STDDEF_H */ |
| |
| /** |
| * SHA-1 digest is kept internally as 5 32-bit words. |
| */ |
| #define _SHA1_DIGEST_LENGTH 5 |
| |
| /** |
| * Number of bits in single SHA-1 word |
| */ |
| #define SHA1_WORD_SIZE_BITS 32 |
| |
| /** |
| * Number of bytes in single SHA-1 word |
| */ |
| #define SHA1_BYTES_IN_WORD (SHA1_WORD_SIZE_BITS / 8) |
| |
| /** |
| * Size of SHA-1 digest in bytes |
| */ |
| #define SHA1_DIGEST_SIZE (_SHA1_DIGEST_LENGTH * SHA1_BYTES_IN_WORD) |
| |
| /** |
| * Size of SHA-1 digest string in chars including termination NUL |
| */ |
| #define SHA1_DIGEST_STRING_SIZE ((SHA1_DIGEST_SIZE) * 2 + 1) |
| |
| /** |
| * Size of single processing block in bits |
| */ |
| #define SHA1_BLOCK_SIZE_BITS 512 |
| |
| /** |
| * Size of single processing block in bytes |
| */ |
| #define SHA1_BLOCK_SIZE (SHA1_BLOCK_SIZE_BITS / 8) |
| |
| |
| struct sha1_ctx |
| { |
| uint32_t H[_SHA1_DIGEST_LENGTH]; /**< Intermediate hash value / digest at end of calculation */ |
| uint8_t buffer[SHA1_BLOCK_SIZE]; /**< SHA256 input data buffer */ |
| uint64_t count; /**< number of bytes, mod 2^64 */ |
| }; |
| |
| /** |
| * Initialise structure for SHA-1 calculation. |
| * |
| * @param ctx_ must be a `struct sha1_ctx *` |
| */ |
| void |
| MHD_SHA1_init (void *ctx_); |
| |
| |
| /** |
| * Process portion of bytes. |
| * |
| * @param ctx_ must be a `struct sha1_ctx *` |
| * @param data bytes to add to hash |
| * @param length number of bytes in @a data |
| */ |
| void |
| MHD_SHA1_update (void *ctx_, |
| const uint8_t *data, |
| size_t length); |
| |
| |
| /** |
| * Finalise SHA-1 calculation, return digest. |
| * |
| * @param ctx_ must be a `struct sha1_ctx *` |
| * @param[out] digest set to the hash, must be #SHA1_DIGEST_SIZE bytes |
| */ |
| void |
| MHD_SHA1_finish (void *ctx_, |
| uint8_t digest[SHA1_DIGEST_SIZE]); |
| |
| #endif /* MHD_SHA1_H */ |