| /* Declarations of functions and data types used for MD4 sum |
| library functions. |
| Copyright (C) 2000-2001, 2003, 2005, 2008-2020 Free Software Foundation, |
| Inc. |
| |
| This program is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License as published by the |
| Free Software Foundation; either version 2, or (at your option) any |
| later version. |
| |
| This program 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, see <https://www.gnu.org/licenses/>. */ |
| |
| #ifndef MD4_H |
| # define MD4_H 1 |
| |
| # include <stdio.h> |
| # include <stdint.h> |
| |
| # ifdef __cplusplus |
| extern "C" { |
| # endif |
| |
| # define MD4_DIGEST_SIZE 16 |
| |
| /* Structure to save state of computation between the single steps. */ |
| struct md4_ctx |
| { |
| uint32_t A; |
| uint32_t B; |
| uint32_t C; |
| uint32_t D; |
| |
| uint32_t total[2]; |
| uint32_t buflen; |
| uint32_t buffer[32]; |
| }; |
| |
| |
| /* Initialize structure containing state of computation. */ |
| extern void md4_init_ctx (struct md4_ctx *ctx); |
| |
| /* Starting with the result of former calls of this function (or the |
| initialization function update the context for the next LEN bytes |
| starting at BUFFER. |
| It is necessary that LEN is a multiple of 64!!! */ |
| extern void md4_process_block (const void *buffer, size_t len, |
| struct md4_ctx *ctx); |
| |
| /* Starting with the result of former calls of this function (or the |
| initialization function update the context for the next LEN bytes |
| starting at BUFFER. |
| It is NOT required that LEN is a multiple of 64. */ |
| extern void md4_process_bytes (const void *buffer, size_t len, |
| struct md4_ctx *ctx); |
| |
| /* Process the remaining bytes in the buffer and put result from CTX |
| in first 16 bytes following RESBUF. The result is always in little |
| endian byte order, so that a byte-wise output yields to the wanted |
| ASCII representation of the message digest. */ |
| extern void *md4_finish_ctx (struct md4_ctx *ctx, void *restrict resbuf); |
| |
| |
| /* Put result from CTX in first 16 bytes following RESBUF. The result is |
| always in little endian byte order, so that a byte-wise output yields |
| to the wanted ASCII representation of the message digest. */ |
| extern void *md4_read_ctx (const struct md4_ctx *ctx, void *restrict resbuf); |
| |
| |
| /* Compute MD4 message digest for bytes read from STREAM. The |
| resulting message digest number will be written into the 16 bytes |
| beginning at RESBLOCK. */ |
| extern int md4_stream (FILE * stream, void *resblock); |
| |
| /* Compute MD4 message digest for LEN bytes beginning at BUFFER. The |
| result is always in little endian byte order, so that a byte-wise |
| output yields to the wanted ASCII representation of the message |
| digest. */ |
| extern void *md4_buffer (const char *buffer, size_t len, |
| void *restrict resblock); |
| |
| # ifdef __cplusplus |
| } |
| # endif |
| |
| #endif |