2
* md5.c: checksum routines
4
* ====================================================================
5
* Copyright (c) 2000-2004 CollabNet. All rights reserved.
7
* This software is licensed as described in the file COPYING, which
8
* you should have received as part of this distribution. The terms
9
* are also available at http://subversion.tigris.org/license-1.html.
10
* If newer versions of this license are posted there, you may use a
11
* newer version instead, at your option.
13
* This software consists of voluntary contributions made by many
14
* individuals. For exact contribution history, see the revision
15
* history and logs, available at http://subversion.tigris.org/.
16
* ====================================================================
24
/* The MD5 digest for the empty string. */
25
static const unsigned char svn_md5__empty_string_digest[] = {
26
212, 29, 140, 217, 143, 0, 178, 4, 233, 128, 9, 152, 236, 248, 66, 126
30
svn_md5_empty_string_digest (void)
32
return svn_md5__empty_string_digest;
37
svn_md5_digest_to_cstring_display (const unsigned char digest[],
40
static const char *hex = "0123456789abcdef";
41
char *str = apr_palloc (pool, (APR_MD5_DIGESTSIZE * 2) + 1);
44
for (i = 0; i < APR_MD5_DIGESTSIZE; i++)
46
str[i*2] = hex[digest[i] >> 4];
47
str[i*2+1] = hex[digest[i] & 0x0f];
56
svn_md5_digest_to_cstring (const unsigned char digest[], apr_pool_t *pool)
58
static const unsigned char zeros_digest[APR_MD5_DIGESTSIZE] = { 0 };
60
if (memcmp (digest, zeros_digest, APR_MD5_DIGESTSIZE) != 0)
61
return svn_md5_digest_to_cstring_display (digest, pool);
68
svn_md5_digests_match (unsigned const char d1[], unsigned const char d2[])
70
static const unsigned char zeros[APR_MD5_DIGESTSIZE] = { 0 };
72
return ((memcmp (d1, zeros, APR_MD5_DIGESTSIZE) == 0)
73
|| (memcmp (d2, zeros, APR_MD5_DIGESTSIZE) == 0)
74
|| (memcmp (d1, d2, APR_MD5_DIGESTSIZE) == 0));