2 * md5.c: checksum routines
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31 /* The MD5 digest for the empty string. */
32 static const unsigned char svn_md5__empty_string_digest_array[] = {
33 0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04,
34 0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e
38 svn_md5__empty_string_digest(void)
40 return svn_md5__empty_string_digest_array;
45 svn_md5__digest_to_cstring_display(const unsigned char digest[],
48 static const char *hex = "0123456789abcdef";
49 char *str = apr_palloc(pool, (APR_MD5_DIGESTSIZE * 2) + 1);
52 for (i = 0; i < APR_MD5_DIGESTSIZE; i++)
54 str[i*2] = hex[digest[i] >> 4];
55 str[i*2+1] = hex[digest[i] & 0x0f];
64 svn_md5__digest_to_cstring(const unsigned char digest[], apr_pool_t *pool)
66 static const unsigned char zeros_digest[APR_MD5_DIGESTSIZE] = { 0 };
68 if (memcmp(digest, zeros_digest, APR_MD5_DIGESTSIZE) != 0)
69 return svn_md5__digest_to_cstring_display(digest, pool);
76 svn_md5__digests_match(const unsigned char d1[], const unsigned char d2[])
78 static const unsigned char zeros[APR_MD5_DIGESTSIZE] = { 0 };
80 return ((memcmp(d1, zeros, APR_MD5_DIGESTSIZE) == 0)
81 || (memcmp(d2, zeros, APR_MD5_DIGESTSIZE) == 0)
82 || (memcmp(d1, d2, APR_MD5_DIGESTSIZE) == 0));
85 /* These are all deprecated, and just wrap the internal functions defined
88 svn_md5_empty_string_digest(void)
90 return svn_md5__empty_string_digest();
94 svn_md5_digest_to_cstring_display(const unsigned char digest[],
97 return svn_md5__digest_to_cstring_display(digest, pool);
101 svn_md5_digest_to_cstring(const unsigned char digest[], apr_pool_t *pool)
103 return svn_md5__digest_to_cstring(digest, pool);
107 svn_md5_digests_match(const unsigned char d1[], const unsigned char d2[])
109 return svn_md5__digests_match(d1, d2);