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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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