mirror of https://gitee.com/openkylin/wget.git
85 lines
3.0 KiB
C
85 lines
3.0 KiB
C
/* Declarations of functions and data types used for MD2 sum
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library functions.
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Copyright (C) 2000-2001, 2003, 2005, 2008-2019 Free Software Foundation,
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Inc.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3, or (at your option) any
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later version.
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This program 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <https://www.gnu.org/licenses/>. */
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#ifndef MD2_H
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# define MD2_H 1
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# include <stdio.h>
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# include <stddef.h>
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# ifdef __cplusplus
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extern "C" {
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# endif
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# define MD2_DIGEST_SIZE 16
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/* Structure to save state of computation between the single steps. */
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struct md2_ctx
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{
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unsigned char chksum[16], X[48], buf[16];
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size_t curlen;
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};
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/* Initialize structure containing state of computation. */
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extern void md2_init_ctx (struct md2_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 md2_process_block (const void *buffer, size_t len,
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struct md2_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 md2_process_bytes (const void *buffer, size_t len,
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struct md2_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 *md2_finish_ctx (struct md2_ctx *ctx, void *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 *md2_read_ctx (const struct md2_ctx *ctx, void *resbuf);
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/* Compute MD2 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 md2_stream (FILE *stream, void *resblock);
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/* Compute MD2 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 *md2_buffer (const char *buffer, size_t len, 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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