1 /* Declaration of functions and data types used for MD5 sum computing
3 Copyright (C) 1995,1996,1997,1999,2000,2001 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
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18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
26 #include <sys/types.h>
27 typedef size_t md5_uintptr;
29 /* Structure to save state of computation between the single steps. */
43 * The following three functions are build up the low level used in
44 * the functions `md5_stream' and `md5_buffer'.
47 /* Initialize structure containing state of computation.
48 (RFC 1321, 3.3: Step 3) */
49 extern void md5_init(struct md5_ctx *ctx);
51 /* Starting with the result of former calls of this function (or the
52 initialization function update the context for the next LEN bytes
54 It is NOT required that LEN is a multiple of 64. */
55 extern void md5_update(struct md5_ctx *ctx, unsigned length,
56 const uint8_t *buffer);
58 /* Process the remaining bytes in the buffer and put result from CTX
59 in first 16 bytes following RESBUF. The result is always in little
60 endian byte order, so that a byte-wise output yields to the wanted
61 ASCII representation of the message digest.
63 IMPORTANT: On some systems it is required that RESBUF is correctly
64 aligned for a 32 bits value. */
65 extern void md5_digest(struct md5_ctx *ctx, unsigned length, uint8_t *resbuf);