mirror of https://gitee.com/openkylin/wget.git
94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
/* Declarations of functions and data types used for MD4 sum
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library functions.
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Copyright (C) 2000-2001, 2003, 2005, 2008-2023 Free Software Foundation,
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Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#ifndef MD4_H
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# define MD4_H 1
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# include <stdio.h>
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# include <stdint.h>
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# ifdef __cplusplus
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extern "C" {
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# endif
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# define MD4_DIGEST_SIZE 16
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/* Structure to save state of computation between the single steps. */
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struct md4_ctx
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{
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uint32_t A;
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uint32_t B;
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uint32_t C;
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uint32_t D;
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uint32_t total[2];
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uint32_t buflen;
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uint32_t buffer[32];
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};
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/* Initialize structure containing state of computation. */
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extern void md4_init_ctx (struct md4_ctx *ctx);
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/* Starting with the result of former calls of this function (or the
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initialization function update the context for the next LEN bytes
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starting at BUFFER.
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It is necessary that LEN is a multiple of 64!!! */
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extern void md4_process_block (const void *buffer, size_t len,
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struct md4_ctx *ctx);
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/* Starting with the result of former calls of this function (or the
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initialization function update the context for the next LEN bytes
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starting at BUFFER.
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It is NOT required that LEN is a multiple of 64. */
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extern void md4_process_bytes (const void *buffer, size_t len,
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struct md4_ctx *ctx);
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/* Process the remaining bytes in the buffer and put result from CTX
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in first 16 bytes following RESBUF. The result is always in little
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endian byte order, so that a byte-wise output yields to the wanted
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ASCII representation of the message digest. */
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extern void *md4_finish_ctx (struct md4_ctx *ctx, void *restrict resbuf);
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/* Put result from CTX in first 16 bytes following RESBUF. The result is
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always in little endian byte order, so that a byte-wise output yields
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to the wanted ASCII representation of the message digest. */
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extern void *md4_read_ctx (const struct md4_ctx *ctx, void *restrict resbuf);
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/* Compute MD4 message digest for LEN bytes beginning at BUFFER. The
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result is always in little endian byte order, so that a byte-wise
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output yields to the wanted ASCII representation of the message
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digest. */
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extern void *md4_buffer (const char *buffer, size_t len,
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void *restrict resblock);
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/* Compute MD4 message digest for bytes read from STREAM. The
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resulting message digest number will be written into the 16 bytes
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beginning at RESBLOCK. */
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extern int md4_stream (FILE * stream, void *resblock);
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# ifdef __cplusplus
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}
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# endif
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#endif
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