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| 1 // Copyright (c) 2009 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 <cryptohi.h> |
| 8 #include <keyhi.h> |
| 9 #include <stdlib.h> |
| 10 |
| 11 #include "base/logging.h" |
| 12 #include "base/nss_init.h" |
| 13 #include "base/scoped_ptr.h" |
| 14 |
| 15 namespace base { |
| 16 |
| 17 // static |
| 18 SignatureCreator* SignatureCreator::Create(RSAPrivateKey* key) { |
| 19 scoped_ptr<SignatureCreator> result(new SignatureCreator); |
| 20 result->key_ = key; |
| 21 |
| 22 result->sign_context_ = SGN_NewContext(SEC_OID_PKCS1_SHA1_WITH_RSA_ENCRYPTION, |
| 23 key->key()); |
| 24 if (!result->sign_context_) { |
| 25 NOTREACHED(); |
| 26 return NULL; |
| 27 } |
| 28 |
| 29 SECStatus rv = SGN_Begin(result->sign_context_); |
| 30 if (rv != SECSuccess) { |
| 31 NOTREACHED(); |
| 32 return NULL; |
| 33 } |
| 34 |
| 35 return result.release(); |
| 36 } |
| 37 |
| 38 SignatureCreator::SignatureCreator() : sign_context_(NULL) { |
| 39 EnsureNSSInit(); |
| 40 } |
| 41 |
| 42 SignatureCreator::~SignatureCreator() { |
| 43 if (sign_context_) { |
| 44 SGN_DestroyContext(sign_context_, PR_TRUE); |
| 45 sign_context_ = NULL; |
| 46 } |
| 47 } |
| 48 |
| 49 bool SignatureCreator::Update(const uint8* data_part, int data_part_len) { |
| 50 SECStatus rv = SGN_Update(sign_context_, |
| 51 const_cast<unsigned char*>(data_part), |
| 52 data_part_len); |
| 53 if (rv != SECSuccess) { |
| 54 NOTREACHED(); |
| 55 return false; |
| 56 } |
| 57 |
| 58 return true; |
| 59 } |
| 60 |
| 61 bool SignatureCreator::Final(std::vector<uint8>* signature) { |
| 62 SECItem signature_item; |
| 63 SECStatus rv = SGN_End(sign_context_, &signature_item); |
| 64 if (rv != SECSuccess) { |
| 65 NOTREACHED(); |
| 66 return false; |
| 67 } |
| 68 signature->assign(signature_item.data, |
| 69 signature_item.data + signature_item.len); |
| 70 |
| 71 return true; |
| 72 } |
| 73 |
| 74 } // namespace base |
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