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md5.h

http://sourceforge.net/projects/libmd5-rfc/ [詳細]

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構成

struct  md5_state_s

型定義

typedef unsigned char md5_byte_t
typedef unsigned int md5_word_t
typedef md5_state_s md5_state_t

関数

void md5_init (md5_state_t *pms)
void md5_append (md5_state_t *pms, const md5_byte_t *data, int nbytes)
void md5_finish (md5_state_t *pms, md5_byte_t digest[16])
void md5_finalize (md5_state_t *pms)
void md5_get_digest (md5_state_t *pms, md5_byte_t digest[16])
void md5_get_str_digest (md5_state_t *pms, char digest[32+1])


説明

http://sourceforge.net/projects/libmd5-rfc/

Copyright (C) 1999, 2002 Aladdin Enterprises. All rights reserved.

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution.

L. Peter Deutsch ghost@aladdin.com

Id
md5.h,v 1.1 2004/07/11 09:46:28 studiokingyonet Exp

Independent implementation of MD5 (RFC 1321).

This code implements the MD5 Algorithm defined in RFC 1321, whose text is available at http://www.ietf.org/rfc/rfc1321.txt The code is derived from the text of the RFC, including the test suite (section A.5) but excluding the rest of Appendix A. It does not include any code or documentation that is identified in the RFC as being copyrighted.

The original and principal author of md5.h is L. Peter Deutsch <ghost@aladdin.com>. Other authors are noted in the change history that follows (in reverse chronological order):

2002-04-13 lpd Removed support for non-ANSI compilers; removed references to Ghostscript; clarified derivation from RFC 1321; now handles byte order either statically or dynamically. 1999-11-04 lpd Edited comments slightly for automatic TOC extraction. 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5); added conditionalization for C++ compilation from Martin Purschke <purschke@bnl.gov>. 1999-05-03 lpd Original version.

This package supports both compile-time and run-time determination of CPU byte order. If ARCH_IS_BIG_ENDIAN is defined as 0, the code will be compiled to run only on little-endian CPUs; if ARCH_IS_BIG_ENDIAN is defined as non-zero, the code will be compiled to run only on big-endian CPUs; if ARCH_IS_BIG_ENDIAN is not defined, the code will be compiled to run on either big- or little-endian CPUs, but will run slightly less efficiently on either one than if ARCH_IS_BIG_ENDIAN is defined.

覚え書き:
reconstruct by d金魚

md5.h で定義されています。


型定義

typedef unsigned char md5_byte_t
 

md5.h68 行で定義されています。

参照元 md5_append(), md5_finalize(), md5_finish(), md5_get_digest(), md5_get_str_digest(), と md5_process().

typedef struct md5_state_s md5_state_t
 

参照元 md5_append(), md5_finalize(), md5_finish(), md5_get_digest(), md5_get_str_digest(), md5_init(), と md5_process().

typedef unsigned int md5_word_t
 

md5.h69 行で定義されています。

参照元 md5_append(), と md5_process().


関数

void md5_append md5_state_t pms,
const md5_byte_t data,
int  nbytes
 

Append a string to the message.

md5.c320 行で定義されています。

参照先 md5_state_s::buf, md5_state_s::count, md5_byte_t, md5_process(), md5_state_t, と md5_word_t.

参照元 dkcMD5LoadStandard(), と md5_finalize().

00321 {
00322   const md5_byte_t *p = data;
00323   int left = nbytes;
00324   int offset = (pms->count[0] >> 3) & 63;
00325   md5_word_t nbits = (md5_word_t)(nbytes << 3);
00326 
00327   if (nbytes <= 0)
00328         return;
00329   /* Update the message length. */
00330   pms->count[1] += nbytes >> 29;
00331   pms->count[0] += nbits;
00332   if (pms->count[0] < nbits)
00333   pms->count[1]++;
00334   /* Process an initial partial block. */
00335   if (offset) {
00336     int copy = (offset + nbytes > 64 ? 64 - offset : nbytes);
00337     memcpy(pms->buf + offset, p, copy);
00338     if (offset + copy < 64)
00339     return;
00340     p += copy;
00341     left -= copy;
00342     md5_process(pms, pms->buf);
00343   }
00344   /* Process full blocks. */
00345   for (; left >= 64; p += 64, left -= 64)
00346         md5_process(pms, p);
00347   /* Process a final partial block. */
00348   if (left)
00349         memcpy(pms->buf, p, left);
00350 }

void md5_finalize md5_state_t pms  ) 
 

finalize process

md5.c364 行で定義されています。

参照先 md5_state_s::count, md5_append(), md5_byte_t, と md5_state_t.

参照元 dkcMD5Final(), と md5_finish().

00364                                    {
00365     static const md5_byte_t pad[64] = {
00366     0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
00367     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
00368     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
00369     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
00370   };
00371   md5_byte_t data[8];
00372   int i;
00373   /* Save the length before padding. */
00374   for (i = 0; i < 8; ++i){
00375     data[i] = (md5_byte_t)(pms->count[i >> 2] >> ((i & 3) << 3));
00376   }
00377   /* Pad to 56 bytes mod 64. */
00378   md5_append(pms, pad, ((55 - (pms->count[0] >> 3)) & 63) + 1);
00379   /* Append the length. */
00380   md5_append(pms, data, 8);
00381 }

void md5_finish md5_state_t pms,
md5_byte_t  digest[16]
 

Finish the message and return the digest. ( md5_finalize() + md5_get_digest() )

md5.c354 行で定義されています。

参照先 md5_byte_t, md5_finalize(), md5_get_digest(), と md5_state_t.

00355 {
00356   md5_finalize(pms);
00357     md5_get_digest(pms,digest);
00358 }

void md5_get_digest md5_state_t pms,
md5_byte_t  digest[16]
 

get digest binary value

md5.c383 行で定義されています。

参照先 md5_state_s::abcd, md5_byte_t, と md5_state_t.

参照元 dkcMD5Digest(), md5_finish(), と md5_get_str_digest().

00383                                                            {
00384     int i;
00385     for (i = 0; i < 16; ++i){
00386     digest[i] = (md5_byte_t)(pms->abcd[i >> 2] >> ((i & 3) << 3));
00387   }
00388 }

void md5_get_str_digest md5_state_t pms,
char  digest[32+1]
 

get digest strings

md5.c390 行で定義されています。

参照先 md5_byte_t, md5_get_digest(), と md5_state_t.

参照元 dkcMD5DigestStr().

00390                                                              {
00391     md5_byte_t temp[16];
00392     int i;
00393 
00394     md5_get_digest(pms,temp);
00395     
00396 
00397     for (i=0; i<16; i++){
00398     //wsprintf(digest+i*2, "%02x", temp[i]);
00399         sprintf(digest+i*2,"%02x", temp[i]);
00400     }
00401   digest[32]='\0';
00402 }

void md5_init md5_state_t pms  ) 
 

Initialize the algorithm.

md5.c311 行で定義されています。

参照先 md5_state_s::abcd, md5_state_s::count, md5_state_t, と T_MASK.

参照元 dkcMD5Init().

00312 {
00313   pms->count[0] = pms->count[1] = 0;
00314   pms->abcd[0] = 0x67452301;
00315   pms->abcd[1] = /*0xefcdab89*/ T_MASK ^ 0x10325476;
00316   pms->abcd[2] = /*0x98badcfe*/ T_MASK ^ 0x67452301;
00317   pms->abcd[3] = 0x10325476;
00318 }


dkutil_cに対してSun Jul 18 22:46:34 2004に生成されました。 doxygen 1.3.6