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| 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/signature_creator.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "base/memory/scoped_ptr.h" | |
| 9 | |
| 10 namespace base { | |
| 11 | |
| 12 // static | |
| 13 SignatureCreator* SignatureCreator::Create(RSAPrivateKey* key) { | |
| 14 scoped_ptr<SignatureCreator> result(new SignatureCreator); | |
| 15 result->key_ = key; | |
| 16 | |
| 17 if (!CryptCreateHash(key->provider(), CALG_SHA1, 0, 0, | |
| 18 result->hash_object_.receive())) { | |
| 19 NOTREACHED(); | |
| 20 return NULL; | |
| 21 } | |
| 22 | |
| 23 return result.release(); | |
| 24 } | |
| 25 | |
| 26 SignatureCreator::SignatureCreator() : hash_object_(0) {} | |
| 27 | |
| 28 SignatureCreator::~SignatureCreator() {} | |
| 29 | |
| 30 bool SignatureCreator::Update(const uint8* data_part, int data_part_len) { | |
| 31 if (!CryptHashData(hash_object_, data_part, data_part_len, 0)) { | |
| 32 NOTREACHED(); | |
| 33 return false; | |
| 34 } | |
| 35 | |
| 36 return true; | |
| 37 } | |
| 38 | |
| 39 bool SignatureCreator::Final(std::vector<uint8>* signature) { | |
| 40 DWORD signature_length = 0; | |
| 41 if (!CryptSignHash(hash_object_, AT_SIGNATURE, NULL, 0, NULL, | |
| 42 &signature_length)) { | |
| 43 return false; | |
| 44 } | |
| 45 | |
| 46 std::vector<uint8> temp; | |
| 47 temp.resize(signature_length); | |
| 48 if (!CryptSignHash(hash_object_, AT_SIGNATURE, NULL, 0, &temp.front(), | |
| 49 &signature_length)) { | |
| 50 return false; | |
| 51 } | |
| 52 | |
| 53 temp.resize(signature_length); | |
| 54 for (size_t i = temp.size(); i > 0; --i) | |
| 55 signature->push_back(temp[i - 1]); | |
| 56 | |
| 57 return true; | |
| 58 } | |
| 59 | |
| 60 } // namespace base | |
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