OLD | NEW |
| (Empty) |
1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "base/crypto/secure_hash.h" | |
6 | |
7 #include <openssl/ssl.h> | |
8 | |
9 #include "base/basictypes.h" | |
10 #include "base/logging.h" | |
11 #include "base/openssl_util.h" | |
12 | |
13 namespace base { | |
14 | |
15 namespace { | |
16 | |
17 class SecureHashSHA256OpenSSL : public SecureHash { | |
18 public: | |
19 SecureHashSHA256OpenSSL() { | |
20 SHA256_Init(&ctx_); | |
21 } | |
22 | |
23 virtual ~SecureHashSHA256OpenSSL() { | |
24 OPENSSL_cleanse(&ctx_, sizeof(ctx_)); | |
25 } | |
26 | |
27 virtual void Update(const void* input, size_t len) { | |
28 SHA256_Update(&ctx_, static_cast<const unsigned char*>(input), len); | |
29 } | |
30 | |
31 virtual void Finish(void* output, size_t len) { | |
32 ScopedOpenSSLSafeSizeBuffer<SHA256_DIGEST_LENGTH> result( | |
33 static_cast<unsigned char*>(output), len); | |
34 SHA256_Final(result.safe_buffer(), &ctx_); | |
35 } | |
36 | |
37 private: | |
38 SHA256_CTX ctx_; | |
39 }; | |
40 | |
41 } // namespace | |
42 | |
43 SecureHash* SecureHash::Create(Algorithm algorithm) { | |
44 switch (algorithm) { | |
45 case SHA256: | |
46 return new SecureHashSHA256OpenSSL(); | |
47 default: | |
48 NOTIMPLEMENTED(); | |
49 return NULL; | |
50 } | |
51 } | |
52 | |
53 } // namespace base | |
OLD | NEW |