130 lines
4.5 KiB
C
130 lines
4.5 KiB
C
// SONIC ROBO BLAST 2
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//-----------------------------------------------------------------------------
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// Copyright (C) 1995-1996 by the Free Software Foundation, Inc.
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//
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// This program is free software distributed under the
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// terms of the GNU General Public License, version 2.
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// See the 'LICENSE' file for more details.
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//-----------------------------------------------------------------------------
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/// \file md5.h
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/// \brief Functions to compute MD5 message digest of files or memory blocks
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/// according to the definition of MD5 in RFC 1321 from April 1992
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/* NOTE: The canonical source of this file is maintained with the GNU C
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Library. Bugs can be reported to bug-glibc@prep.ai.mit.edu. */
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#ifndef _MD5_H
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#define _MD5_H 1
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#include <stdio.h>
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#if defined (HAVE_LIMITS_H) || (defined (_LIBC) && _LIBC) || defined (_WIN32)
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# include <limits.h>
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#endif
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/* The following contortions are an attempt to use the C preprocessor
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to determine an unsigned integral type that is 32 bits wide. An
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alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but
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doing that would require that the configure script compile and *run*
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the resulting executable. Locally running cross-compiled executables
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is usually not possible. */
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#ifdef _LIBC
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# include <sys/types.h>
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typedef u_int32_t md5_uint32;
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#else
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# if defined __STDC__ && __STDC__
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# define UINT_MAX_32_BITS 4294967295U
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# else
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# define UINT_MAX_32_BITS 0xFFFFFFFF
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# endif
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/* If UINT_MAX isn't defined, assume it's a 32-bit type.
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This should be valid for all systems GNU cares about because
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that doesn't include 16-bit systems, and only modern systems
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(that certainly have <limits.h>) have 64+-bit integral types. */
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# ifndef UINT_MAX
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# define UINT_MAX UINT_MAX_32_BITS
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# endif
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# if UINT_MAX == UINT_MAX_32_BITS
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typedef unsigned int md5_uint32;
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# else
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# if USHRT_MAX == UINT_MAX_32_BITS
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typedef unsigned short md5_uint32;
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# else
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# if ULONG_MAX == UINT_MAX_32_BITS
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typedef unsigned long md5_uint32;
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# else
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/* The following line is intended to evoke an error.
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Using #error is not portable enough. */
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"Cannot determine unsigned 32-bit data type."
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# endif
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# endif
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# endif
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#endif
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#undef __P
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#if defined (__STDC__) && __STDC__
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#define __P(x) x
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#else
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#define __P(x) ()
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#endif
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/*
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* The following three functions are build up the low level used in
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* the functions `md5_stream' and `md5_buffer'.
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*/
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#if 0
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/* Initialize structure containing state of computation.
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(RFC 1321, 3.3: Step 3) */
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extern void md5_init_ctx __P ((struct md5_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 md5_process_block __P ((const void *buffer, size_t len,
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struct md5_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 md5_process_bytes __P ((const void *buffer, size_t len,
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struct md5_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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IMPORTANT: On some systems it is required that RESBUF is correctly
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aligned for a 32 bits value. */
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extern void *md5_finish_ctx __P ((struct md5_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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IMPORTANT: On some systems it is required that RESBUF is correctly
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aligned for a 32 bits value. */
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extern void *md5_read_ctx __P ((const struct md5_ctx *ctx, void *resbuf));
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#endif
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/* Compute MD5 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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int md5_stream __P ((FILE *stream, void *resblock));
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/* Compute MD5 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 *md5_buffer __P ((const char *buffer, size_t len, void *resblock));
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#endif
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