| 1 | /*
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| 2 | Copyright (C) 1999, 2002 Aladdin Enterprises. All rights reserved.
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| 3 |
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| 4 | This software is provided 'as-is', without any express or implied
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| 5 | warranty. In no event will the authors be held liable for any damages
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| 6 | arising from the use of this software.
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| 7 |
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| 8 | Permission is granted to anyone to use this software for any purpose,
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| 9 | including commercial applications, and to alter it and redistribute it
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| 10 | freely, subject to the following restrictions:
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| 11 |
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| 12 | 1. The origin of this software must not be misrepresented; you must not
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| 13 | claim that you wrote the original software. If you use this software
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| 14 | in a product, an acknowledgment in the product documentation would be
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| 15 | appreciated but is not required.
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| 16 | 2. Altered source versions must be plainly marked as such, and must not be
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| 17 | misrepresented as being the original software.
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| 18 | 3. This notice may not be removed or altered from any source distribution.
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| 19 |
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| 20 | L. Peter Deutsch
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| 21 | ghost@aladdin.com
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| 22 |
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| 23 | */
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| 24 | /* $Id$ */
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| 25 | /*
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| 26 | Independent implementation of MD5 (RFC 1321).
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| 27 |
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| 28 | This code implements the MD5 Algorithm defined in RFC 1321, whose
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| 29 | text is available at
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| 30 | http://www.ietf.org/rfc/rfc1321.txt
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| 31 | The code is derived from the text of the RFC, including the test suite
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| 32 | (section A.5) but excluding the rest of Appendix A. It does not include
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| 33 | any code or documentation that is identified in the RFC as being
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| 34 | copyrighted.
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| 35 |
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| 36 | The original and principal author of md5.h is L. Peter Deutsch
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| 37 | <ghost@aladdin.com>. Other authors are noted in the change history
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| 38 | that follows (in reverse chronological order):
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| 39 |
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| 40 | 2002-04-13 lpd Removed support for non-ANSI compilers; removed
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| 41 | references to Ghostscript; clarified derivation from RFC 1321;
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| 42 | now handles byte order either statically or dynamically.
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| 43 | 1999-11-04 lpd Edited comments slightly for automatic TOC extraction.
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| 44 | 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5);
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| 45 | added conditionalization for C++ compilation from Martin
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| 46 | Purschke <purschke@bnl.gov>.
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| 47 | 1999-05-03 lpd Original version.
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| 48 | */
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| 49 |
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| 50 | #ifndef md5_INCLUDED
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| 51 | # define md5_INCLUDED
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| 52 |
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| 53 | /*
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| 54 | * This package supports both compile-time and run-time determination of CPU
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| 55 | * byte order. If ARCH_IS_BIG_ENDIAN is defined as 0, the code will be
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| 56 | * compiled to run only on little-endian CPUs; if ARCH_IS_BIG_ENDIAN is
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| 57 | * defined as non-zero, the code will be compiled to run only on big-endian
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| 58 | * CPUs; if ARCH_IS_BIG_ENDIAN is not defined, the code will be compiled to
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| 59 | * run on either big- or little-endian CPUs, but will run slightly less
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| 60 | * efficiently on either one than if ARCH_IS_BIG_ENDIAN is defined.
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| 61 | */
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| 62 |
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| 63 | typedef unsigned char md5_byte_t; /* 8-bit byte */
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| 64 | typedef unsigned int md5_word_t; /* 32-bit word */
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| 65 |
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| 66 | /* Define the state of the MD5 Algorithm. */
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| 67 | typedef struct md5_state_s {
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| 68 | md5_word_t count[2]; /* message length in bits, lsw first */
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| 69 | md5_word_t abcd[4]; /* digest buffer */
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| 70 | md5_byte_t buf[64]; /* accumulate block */
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| 71 | } md5_state_t;
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| 72 |
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| 73 | #ifdef __cplusplus
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| 74 | extern "C"
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| 75 | {
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| 76 | #endif
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| 77 |
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| 78 | /* Initialize the algorithm. */
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| 79 | void md5_init(md5_state_t *pms);
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| 80 |
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| 81 | /* Append a string to the message. */
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| 82 | void md5_append(md5_state_t *pms, const md5_byte_t *data, unsigned int nbytes);
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| 83 |
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| 84 | /* Finish the message and return the digest. */
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| 85 | void md5_finish(md5_state_t *pms, md5_byte_t digest[16]);
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| 86 |
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| 87 | #ifdef __cplusplus
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| 88 | } /* end extern "C" */
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| 89 | #endif
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| 90 |
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| 91 | #endif /* md5_INCLUDED */
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