1 /*
2 * libjingle
3 * Copyright 2004--2005, Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28
29 #include "talk/base/md5.h"
30 #include "talk/base/stringdigest.h"
31 #include "talk/base/stringencode.h"
32
33 namespace talk_base {
34
MD5(const std::string & data)35 std::string MD5(const std::string& data) {
36 MD5_CTX ctx;
37 MD5Init(&ctx);
38 MD5Update(&ctx, const_cast<unsigned char *>(reinterpret_cast<const unsigned char *>(data.data())), static_cast<unsigned int>(data.size()));
39 unsigned char digest[16];
40 MD5Final(digest, &ctx);
41 std::string hex_digest;
42 for (int i=0; i<16; ++i) {
43 hex_digest += hex_encode(digest[i] >> 4);
44 hex_digest += hex_encode(digest[i] & 0xf);
45 }
46 return hex_digest;
47 }
48
49 } // namespace talk_base
50