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1 /* | 1 /* |
2 * Copyright 2011 The WebRTC Project Authors. All rights reserved. | 2 * Copyright 2011 The WebRTC Project Authors. All rights reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #include "webrtc/base/messagedigest.h" | 11 #include "webrtc/base/messagedigest.h" |
12 | 12 |
13 #include <memory> | 13 #include <memory> |
14 | 14 |
15 #include <string.h> | 15 #include <string.h> |
16 | 16 |
17 #include "webrtc/base/basictypes.h" | 17 #include "webrtc/base/basictypes.h" |
18 #include "webrtc/base/sslconfig.h" | |
19 #if SSL_USE_OPENSSL | |
20 #include "webrtc/base/openssldigest.h" | 18 #include "webrtc/base/openssldigest.h" |
21 #else | |
22 #include "webrtc/base/md5digest.h" | |
23 #include "webrtc/base/sha1digest.h" | |
24 #endif | |
25 #include "webrtc/base/stringencode.h" | 19 #include "webrtc/base/stringencode.h" |
26 | 20 |
27 namespace rtc { | 21 namespace rtc { |
28 | 22 |
29 // From RFC 4572. | 23 // From RFC 4572. |
30 const char DIGEST_MD5[] = "md5"; | 24 const char DIGEST_MD5[] = "md5"; |
31 const char DIGEST_SHA_1[] = "sha-1"; | 25 const char DIGEST_SHA_1[] = "sha-1"; |
32 const char DIGEST_SHA_224[] = "sha-224"; | 26 const char DIGEST_SHA_224[] = "sha-224"; |
33 const char DIGEST_SHA_256[] = "sha-256"; | 27 const char DIGEST_SHA_256[] = "sha-256"; |
34 const char DIGEST_SHA_384[] = "sha-384"; | 28 const char DIGEST_SHA_384[] = "sha-384"; |
35 const char DIGEST_SHA_512[] = "sha-512"; | 29 const char DIGEST_SHA_512[] = "sha-512"; |
36 | 30 |
37 static const size_t kBlockSize = 64; // valid for SHA-256 and down | 31 static const size_t kBlockSize = 64; // valid for SHA-256 and down |
38 | 32 |
39 MessageDigest* MessageDigestFactory::Create(const std::string& alg) { | 33 MessageDigest* MessageDigestFactory::Create(const std::string& alg) { |
40 #if SSL_USE_OPENSSL | |
41 MessageDigest* digest = new OpenSSLDigest(alg); | 34 MessageDigest* digest = new OpenSSLDigest(alg); |
42 if (digest->Size() == 0) { // invalid algorithm | 35 if (digest->Size() == 0) { // invalid algorithm |
43 delete digest; | 36 delete digest; |
44 digest = NULL; | 37 digest = NULL; |
45 } | 38 } |
46 return digest; | 39 return digest; |
47 #else | |
48 MessageDigest* digest = NULL; | |
49 if (alg == DIGEST_MD5) { | |
50 digest = new Md5Digest(); | |
51 } else if (alg == DIGEST_SHA_1) { | |
52 digest = new Sha1Digest(); | |
53 } | |
54 return digest; | |
55 #endif | |
56 } | 40 } |
57 | 41 |
58 bool IsFips180DigestAlgorithm(const std::string& alg) { | 42 bool IsFips180DigestAlgorithm(const std::string& alg) { |
59 // These are the FIPS 180 algorithms. According to RFC 4572 Section 5, | 43 // These are the FIPS 180 algorithms. According to RFC 4572 Section 5, |
60 // "Self-signed certificates (for which legacy certificates are not a | 44 // "Self-signed certificates (for which legacy certificates are not a |
61 // consideration) MUST use one of the FIPS 180 algorithms (SHA-1, | 45 // consideration) MUST use one of the FIPS 180 algorithms (SHA-1, |
62 // SHA-224, SHA-256, SHA-384, or SHA-512) as their signature algorithm, | 46 // SHA-224, SHA-256, SHA-384, or SHA-512) as their signature algorithm, |
63 // and thus also MUST use it to calculate certificate fingerprints." | 47 // and thus also MUST use it to calculate certificate fingerprints." |
64 return alg == DIGEST_SHA_1 || | 48 return alg == DIGEST_SHA_1 || |
65 alg == DIGEST_SHA_224 || | 49 alg == DIGEST_SHA_224 || |
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174 } | 158 } |
175 | 159 |
176 std::string ComputeHmac(const std::string& alg, const std::string& key, | 160 std::string ComputeHmac(const std::string& alg, const std::string& key, |
177 const std::string& input) { | 161 const std::string& input) { |
178 std::string output; | 162 std::string output; |
179 ComputeHmac(alg, key, input, &output); | 163 ComputeHmac(alg, key, input, &output); |
180 return output; | 164 return output; |
181 } | 165 } |
182 | 166 |
183 } // namespace rtc | 167 } // namespace rtc |
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