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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 <cryptohi.h> | |
| 8 #include <keyhi.h> | |
| 9 #include <stdlib.h> | |
| 10 | |
| 11 #include "base/logging.h" | |
| 12 #include "base/memory/scoped_ptr.h" | |
| 13 #include "base/nss_util.h" | |
| 14 | |
| 15 namespace base { | |
| 16 | |
| 17 SignatureCreator::~SignatureCreator() { | |
| 18 if (sign_context_) { | |
| 19 SGN_DestroyContext(sign_context_, PR_TRUE); | |
| 20 sign_context_ = NULL; | |
| 21 } | |
| 22 } | |
| 23 | |
| 24 // static | |
| 25 SignatureCreator* SignatureCreator::Create(RSAPrivateKey* key) { | |
| 26 scoped_ptr<SignatureCreator> result(new SignatureCreator); | |
| 27 result->key_ = key; | |
| 28 | |
| 29 result->sign_context_ = SGN_NewContext(SEC_OID_PKCS1_SHA1_WITH_RSA_ENCRYPTION, | |
| 30 key->key()); | |
| 31 if (!result->sign_context_) { | |
| 32 NOTREACHED(); | |
| 33 return NULL; | |
| 34 } | |
| 35 | |
| 36 SECStatus rv = SGN_Begin(result->sign_context_); | |
| 37 if (rv != SECSuccess) { | |
| 38 NOTREACHED(); | |
| 39 return NULL; | |
| 40 } | |
| 41 | |
| 42 return result.release(); | |
| 43 } | |
| 44 | |
| 45 bool SignatureCreator::Update(const uint8* data_part, int data_part_len) { | |
| 46 // TODO(wtc): Remove this const_cast when we require NSS 3.12.5. | |
| 47 // See NSS bug https://bugzilla.mozilla.org/show_bug.cgi?id=518255 | |
| 48 SECStatus rv = SGN_Update(sign_context_, | |
| 49 const_cast<unsigned char*>(data_part), | |
| 50 data_part_len); | |
| 51 if (rv != SECSuccess) { | |
| 52 NOTREACHED(); | |
| 53 return false; | |
| 54 } | |
| 55 | |
| 56 return true; | |
| 57 } | |
| 58 | |
| 59 bool SignatureCreator::Final(std::vector<uint8>* signature) { | |
| 60 SECItem signature_item; | |
| 61 SECStatus rv = SGN_End(sign_context_, &signature_item); | |
| 62 if (rv != SECSuccess) { | |
| 63 NOTREACHED(); | |
| 64 return false; | |
| 65 } | |
| 66 signature->assign(signature_item.data, | |
| 67 signature_item.data + signature_item.len); | |
| 68 SECITEM_FreeItem(&signature_item, PR_FALSE); | |
| 69 return true; | |
| 70 } | |
| 71 | |
| 72 SignatureCreator::SignatureCreator() : sign_context_(NULL) { | |
| 73 EnsureNSSInit(); | |
| 74 } | |
| 75 | |
| 76 } // namespace base | |
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