Mercurial > hg > octave-shane > gnulib-hg
annotate lib/md5.h @ 742:cddc2692eef4
Define and use macro, PARAMS, not __P.
| author | Jim Meyering <jim@meyering.net> |
|---|---|
| date | Thu, 17 Oct 1996 02:59:09 +0000 |
| parents | b4be735c843c |
| children | 7ee3d04f9624 |
| rev | line source |
|---|---|
| 464 | 1 /* md5.h - Declaration of functions and data types used for MD5 sum |
| 2 computing library functions. | |
| 3 Copyright (C) 1995 Free Software Foundation, Inc. | |
| 4 | |
| 5 This program is free software; you can redistribute it and/or modify | |
| 6 it under the terms of the GNU General Public License as published by | |
| 7 the Free Software Foundation; either version 2, or (at your option) | |
| 8 any later version. | |
| 9 | |
| 10 This program is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 GNU General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU General Public License | |
| 16 along with this program; if not, write to the Free Software | |
| 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
| 18 | |
| 19 #ifndef _MD5_H | |
| 20 #define _MD5_H | |
| 21 | |
| 22 #include <stdio.h> | |
| 23 | |
| 24 #if defined HAVE_LIMITS_H || _LIBC | |
| 25 # include <limits.h> | |
| 26 #endif | |
| 27 | |
| 28 /* The following contortions are an attempt to use the C preprocessor | |
| 29 to determine an unsigned integral type that is 32 bits wide. An | |
| 30 alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but | |
| 31 doing that would require that the configure script compile and *run* | |
| 32 the resulting executable. Locally running cross-compiled executables | |
| 33 is usually not possible. */ | |
| 34 | |
| 35 #if defined __STDC__ && __STDC__ | |
| 36 # define UINT_MAX_32_BITS 4294967295U | |
| 37 #else | |
| 38 # define UINT_MAX_32_BITS 0xFFFFFFFF | |
| 39 #endif | |
| 40 | |
| 41 /* If UINT_MAX isn't defined, assume it's a 32-bit type. | |
| 42 This should be valid for all systems GNU cares about because | |
| 43 that doesn't include 16-bit systems, and only modern systems | |
| 44 (that certainly have <limits.h>) have 64+-bit integral types. */ | |
| 45 | |
| 46 #ifndef UINT_MAX | |
| 47 # define UINT_MAX UINT_MAX_32_BITS | |
| 48 #endif | |
| 49 | |
| 50 #if UINT_MAX == UINT_MAX_32_BITS | |
| 51 typedef unsigned int md5_uint32; | |
| 52 #else | |
| 53 # if USHRT_MAX == UINT_MAX_32_BITS | |
| 54 typedef unsigned short md5_uint32; | |
| 55 # else | |
| 56 # if ULONG_MAX == UINT_MAX_32_BITS | |
| 57 typedef unsigned long md5_uint32; | |
| 58 # else | |
| 59 /* The following line is intended to evoke an error. | |
| 60 Using #error is not portable enough. */ | |
| 61 "Cannot determine unsigned 32-bit data type." | |
| 62 # endif | |
| 63 # endif | |
| 64 #endif | |
| 65 | |
|
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Define and use macro, PARAMS, not __P.
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parents:
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66 #undef PARAMS |
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b4be735c843c
(md5_stream): Update prototype.
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parents:
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diff
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67 #if defined (__STDC__) && __STDC__ |
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Define and use macro, PARAMS, not __P.
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parents:
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diff
changeset
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68 # define PARAMS(x) x |
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parents:
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69 #else |
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Define and use macro, PARAMS, not __P.
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parents:
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diff
changeset
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70 # define PARAMS(x) () |
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Jim Meyering <jim@meyering.net>
parents:
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71 #endif |
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b4be735c843c
(md5_stream): Update prototype.
Jim Meyering <jim@meyering.net>
parents:
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diff
changeset
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72 |
| 464 | 73 /* Structure to save state of computation between the single steps. */ |
| 74 struct md5_ctx | |
| 75 { | |
| 76 md5_uint32 A; | |
| 77 md5_uint32 B; | |
| 78 md5_uint32 C; | |
| 79 md5_uint32 D; | |
| 80 }; | |
| 81 | |
| 82 /* | |
| 83 * The following three functions are build up the low level used in | |
| 84 * the functions `md5_stream' and `md5_buffer'. | |
| 85 */ | |
| 86 | |
| 87 /* Initialize structure containing state of computation. | |
| 88 (RFC 1321, 3.3: Step 3) */ | |
|
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Define and use macro, PARAMS, not __P.
Jim Meyering <jim@meyering.net>
parents:
466
diff
changeset
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89 void md5_init_ctx PARAMS ((struct md5_ctx *ctx)); |
| 464 | 90 |
| 91 /* Starting with the result of former calls of this function (or the | |
| 92 initialzation function update the context for the next LEN bytes | |
| 93 starting at BUFFER. | |
| 94 It is necessary that LEN is a multiple of 64!!! */ | |
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Define and use macro, PARAMS, not __P.
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parents:
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diff
changeset
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95 void md5_process_block PARAMS ((const void *buffer, size_t len, |
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cddc2692eef4
Define and use macro, PARAMS, not __P.
Jim Meyering <jim@meyering.net>
parents:
466
diff
changeset
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96 struct md5_ctx *ctx)); |
| 464 | 97 |
| 98 /* Put result from CTX in first 16 bytes following RESBUF. The result is | |
| 99 always in little endian byte order, so that a byte-wise output yields | |
| 100 to the wanted ASCII representation of the message digest. */ | |
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Define and use macro, PARAMS, not __P.
Jim Meyering <jim@meyering.net>
parents:
466
diff
changeset
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101 void *md5_read_ctx PARAMS ((const struct md5_ctx *ctx, void *resbuf)); |
| 464 | 102 |
| 103 | |
| 104 /* Compute MD5 message digest for bytes read from STREAM. The | |
| 105 resulting message digest number will be written into the 16 bytes | |
| 106 beginning at RESBLOCK. */ | |
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cddc2692eef4
Define and use macro, PARAMS, not __P.
Jim Meyering <jim@meyering.net>
parents:
466
diff
changeset
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107 int md5_stream PARAMS ((FILE *stream, void *resblock)); |
| 464 | 108 |
| 109 /* Compute MD5 message digest for LEN bytes beginning at BUFFER. The | |
| 110 result is always in little endian byte order, so that a byte-wise | |
| 111 output yields to the wanted ASCII representation of the message | |
| 112 digest. */ | |
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742
cddc2692eef4
Define and use macro, PARAMS, not __P.
Jim Meyering <jim@meyering.net>
parents:
466
diff
changeset
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113 void *md5_buffer PARAMS ((const char *buffer, size_t len, void *resblock)); |
| 464 | 114 |
| 115 #endif |