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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "crypto/signature_creator.h" | 5 #include "crypto/signature_creator.h" |
6 | 6 |
7 #include <openssl/evp.h> | 7 #include <openssl/evp.h> |
8 #include <openssl/rsa.h> | 8 #include <openssl/rsa.h> |
9 #include <stddef.h> | 9 #include <stddef.h> |
10 #include <stdint.h> | 10 #include <stdint.h> |
11 | 11 |
12 #include <memory> | |
13 | |
14 #include "base/logging.h" | 12 #include "base/logging.h" |
15 #include "crypto/openssl_util.h" | 13 #include "crypto/openssl_util.h" |
16 #include "crypto/rsa_private_key.h" | 14 #include "crypto/rsa_private_key.h" |
17 #include "crypto/scoped_openssl_types.h" | 15 #include "crypto/scoped_openssl_types.h" |
18 | 16 |
19 namespace crypto { | 17 namespace crypto { |
20 | 18 |
21 namespace { | 19 namespace { |
22 | 20 |
23 const EVP_MD* ToOpenSSLDigest(SignatureCreator::HashAlgorithm hash_alg) { | 21 const EVP_MD* ToOpenSSLDigest(SignatureCreator::HashAlgorithm hash_alg) { |
24 switch (hash_alg) { | 22 switch (hash_alg) { |
25 case SignatureCreator::SHA1: | 23 case SignatureCreator::SHA1: |
26 return EVP_sha1(); | 24 return EVP_sha1(); |
27 case SignatureCreator::SHA256: | 25 case SignatureCreator::SHA256: |
28 return EVP_sha256(); | 26 return EVP_sha256(); |
29 } | 27 } |
30 return NULL; | 28 return nullptr; |
31 } | 29 } |
32 | 30 |
33 int ToOpenSSLDigestType(SignatureCreator::HashAlgorithm hash_alg) { | 31 int ToOpenSSLDigestType(SignatureCreator::HashAlgorithm hash_alg) { |
34 switch (hash_alg) { | 32 switch (hash_alg) { |
35 case SignatureCreator::SHA1: | 33 case SignatureCreator::SHA1: |
36 return NID_sha1; | 34 return NID_sha1; |
37 case SignatureCreator::SHA256: | 35 case SignatureCreator::SHA256: |
38 return NID_sha256; | 36 return NID_sha256; |
39 } | 37 } |
40 return NID_undef; | 38 return NID_undef; |
41 } | 39 } |
42 | 40 |
43 } // namespace | 41 } // namespace |
44 | 42 |
| 43 SignatureCreator::~SignatureCreator() { |
| 44 EVP_MD_CTX_destroy(sign_context_); |
| 45 } |
| 46 |
45 // static | 47 // static |
46 SignatureCreator* SignatureCreator::Create(RSAPrivateKey* key, | 48 std::unique_ptr<SignatureCreator> SignatureCreator::Create( |
47 HashAlgorithm hash_alg) { | 49 RSAPrivateKey* key, |
| 50 HashAlgorithm hash_alg) { |
48 OpenSSLErrStackTracer err_tracer(FROM_HERE); | 51 OpenSSLErrStackTracer err_tracer(FROM_HERE); |
49 std::unique_ptr<SignatureCreator> result(new SignatureCreator); | 52 std::unique_ptr<SignatureCreator> result(new SignatureCreator); |
50 const EVP_MD* const digest = ToOpenSSLDigest(hash_alg); | 53 const EVP_MD* const digest = ToOpenSSLDigest(hash_alg); |
51 DCHECK(digest); | 54 DCHECK(digest); |
52 if (!digest) { | 55 if (!digest) { |
53 return NULL; | 56 return nullptr; |
54 } | 57 } |
55 if (!EVP_DigestSignInit(result->sign_context_, NULL, digest, NULL, | 58 if (!EVP_DigestSignInit(result->sign_context_, nullptr, digest, nullptr, |
56 key->key())) { | 59 key->key())) { |
57 return NULL; | 60 return nullptr; |
58 } | 61 } |
59 return result.release(); | 62 return result; |
60 } | 63 } |
61 | 64 |
62 // static | 65 // static |
63 bool SignatureCreator::Sign(RSAPrivateKey* key, | 66 bool SignatureCreator::Sign(RSAPrivateKey* key, |
64 HashAlgorithm hash_alg, | 67 HashAlgorithm hash_alg, |
65 const uint8_t* data, | 68 const uint8_t* data, |
66 int data_len, | 69 int data_len, |
67 std::vector<uint8_t>* signature) { | 70 std::vector<uint8_t>* signature) { |
68 ScopedRSA rsa_key(EVP_PKEY_get1_RSA(key->key())); | 71 ScopedRSA rsa_key(EVP_PKEY_get1_RSA(key->key())); |
69 if (!rsa_key) | 72 if (!rsa_key) |
70 return false; | 73 return false; |
71 signature->resize(RSA_size(rsa_key.get())); | 74 signature->resize(RSA_size(rsa_key.get())); |
72 | 75 |
73 unsigned int len = 0; | 76 unsigned int len = 0; |
74 if (!RSA_sign(ToOpenSSLDigestType(hash_alg), data, data_len, | 77 if (!RSA_sign(ToOpenSSLDigestType(hash_alg), data, data_len, |
75 signature->data(), &len, rsa_key.get())) { | 78 signature->data(), &len, rsa_key.get())) { |
76 signature->clear(); | 79 signature->clear(); |
77 return false; | 80 return false; |
78 } | 81 } |
79 signature->resize(len); | 82 signature->resize(len); |
80 return true; | 83 return true; |
81 } | 84 } |
82 | 85 |
83 SignatureCreator::SignatureCreator() | |
84 : sign_context_(EVP_MD_CTX_create()) { | |
85 } | |
86 | |
87 SignatureCreator::~SignatureCreator() { | |
88 EVP_MD_CTX_destroy(sign_context_); | |
89 } | |
90 | |
91 bool SignatureCreator::Update(const uint8_t* data_part, int data_part_len) { | 86 bool SignatureCreator::Update(const uint8_t* data_part, int data_part_len) { |
92 OpenSSLErrStackTracer err_tracer(FROM_HERE); | 87 OpenSSLErrStackTracer err_tracer(FROM_HERE); |
93 return !!EVP_DigestSignUpdate(sign_context_, data_part, data_part_len); | 88 return !!EVP_DigestSignUpdate(sign_context_, data_part, data_part_len); |
94 } | 89 } |
95 | 90 |
96 bool SignatureCreator::Final(std::vector<uint8_t>* signature) { | 91 bool SignatureCreator::Final(std::vector<uint8_t>* signature) { |
97 OpenSSLErrStackTracer err_tracer(FROM_HERE); | 92 OpenSSLErrStackTracer err_tracer(FROM_HERE); |
98 | 93 |
99 // Determine the maximum length of the signature. | 94 // Determine the maximum length of the signature. |
100 size_t len = 0; | 95 size_t len = 0; |
101 if (!EVP_DigestSignFinal(sign_context_, NULL, &len)) { | 96 if (!EVP_DigestSignFinal(sign_context_, nullptr, &len)) { |
102 signature->clear(); | 97 signature->clear(); |
103 return false; | 98 return false; |
104 } | 99 } |
105 signature->resize(len); | 100 signature->resize(len); |
106 | 101 |
107 // Sign it. | 102 // Sign it. |
108 if (!EVP_DigestSignFinal(sign_context_, signature->data(), &len)) { | 103 if (!EVP_DigestSignFinal(sign_context_, signature->data(), &len)) { |
109 signature->clear(); | 104 signature->clear(); |
110 return false; | 105 return false; |
111 } | 106 } |
112 signature->resize(len); | 107 signature->resize(len); |
113 return true; | 108 return true; |
114 } | 109 } |
115 | 110 |
| 111 SignatureCreator::SignatureCreator() : sign_context_(EVP_MD_CTX_create()) {} |
| 112 |
116 } // namespace crypto | 113 } // namespace crypto |
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