2 * md5.c: checksum routines
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5 * Licensed to the Apache Software Foundation (ASF) under one
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7 * distributed with this work for additional information
8 * regarding copyright ownership. The ASF licenses this file
9 * to you under the Apache License, Version 2.0 (the
10 * "License"); you may not use this file except in compliance
11 * with the License. You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing,
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18 * KIND, either express or implied. See the License for the
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21 * ====================================================================
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
);