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| 1 // Copyright (c) 2012 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 "crypto/secure_hash.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "base/pickle.h" | |
| 9 #include "crypto/third_party/nss/chromium-blapi.h" | |
| 10 #include "crypto/third_party/nss/chromium-sha256.h" | |
| 11 | |
| 12 namespace crypto { | |
| 13 | |
| 14 namespace { | |
| 15 | |
| 16 const char kSHA256Descriptor[] = "NSS"; | |
| 17 | |
| 18 class SecureHashSHA256NSS : public SecureHash { | |
| 19 public: | |
| 20 static const int kSecureHashVersion = 1; | |
| 21 | |
| 22 SecureHashSHA256NSS() { | |
| 23 SHA256_Begin(&ctx_); | |
| 24 } | |
| 25 | |
| 26 ~SecureHashSHA256NSS() override { memset(&ctx_, 0, sizeof(ctx_)); } | |
| 27 | |
| 28 // SecureHash implementation: | |
| 29 void Update(const void* input, size_t len) override { | |
| 30 SHA256_Update(&ctx_, static_cast<const unsigned char*>(input), len); | |
| 31 } | |
| 32 | |
| 33 void Finish(void* output, size_t len) override { | |
| 34 SHA256_End(&ctx_, static_cast<unsigned char*>(output), NULL, | |
| 35 static_cast<unsigned int>(len)); | |
| 36 } | |
| 37 | |
| 38 bool Serialize(Pickle* pickle) override; | |
| 39 bool Deserialize(PickleIterator* data_iterator) override; | |
| 40 | |
| 41 private: | |
| 42 SHA256Context ctx_; | |
| 43 }; | |
| 44 | |
| 45 bool SecureHashSHA256NSS::Serialize(Pickle* pickle) { | |
| 46 if (!pickle) | |
| 47 return false; | |
| 48 | |
| 49 if (!pickle->WriteInt(kSecureHashVersion) || | |
| 50 !pickle->WriteString(kSHA256Descriptor) || | |
| 51 !pickle->WriteBytes(&ctx_, sizeof(ctx_))) { | |
| 52 return false; | |
| 53 } | |
| 54 | |
| 55 return true; | |
| 56 } | |
| 57 | |
| 58 bool SecureHashSHA256NSS::Deserialize(PickleIterator* data_iterator) { | |
| 59 int version; | |
| 60 if (!data_iterator->ReadInt(&version)) | |
| 61 return false; | |
| 62 | |
| 63 if (version > kSecureHashVersion) | |
| 64 return false; // We don't know how to deal with this. | |
| 65 | |
| 66 std::string type; | |
| 67 if (!data_iterator->ReadString(&type)) | |
| 68 return false; | |
| 69 | |
| 70 if (type != kSHA256Descriptor) | |
| 71 return false; // It's the wrong kind. | |
| 72 | |
| 73 const char* data = NULL; | |
| 74 if (!data_iterator->ReadBytes(&data, sizeof(ctx_))) | |
| 75 return false; | |
| 76 | |
| 77 memcpy(&ctx_, data, sizeof(ctx_)); | |
| 78 | |
| 79 return true; | |
| 80 } | |
| 81 | |
| 82 } // namespace | |
| 83 | |
| 84 SecureHash* SecureHash::Create(Algorithm algorithm) { | |
| 85 switch (algorithm) { | |
| 86 case SHA256: | |
| 87 return new SecureHashSHA256NSS(); | |
| 88 default: | |
| 89 NOTIMPLEMENTED(); | |
| 90 return NULL; | |
| 91 } | |
| 92 } | |
| 93 | |
| 94 } // namespace crypto | |
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Chromium Code Reviews
Issue 956613002:
Reland "Cut down /crypto and switch what is left of it to boringssl". (Closed)
Base URL: git@github.com:domokit/mojo.git@master