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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 | 9 |
| 10 #include "base/logging.h" | 10 #include "base/logging.h" |
| 11 #include "base/memory/scoped_ptr.h" | 11 #include "base/memory/scoped_ptr.h" |
| 12 #include "base/stl_util.h" | |
| 13 #include "crypto/openssl_util.h" | 12 #include "crypto/openssl_util.h" |
| 14 #include "crypto/rsa_private_key.h" | 13 #include "crypto/rsa_private_key.h" |
| 15 #include "crypto/scoped_openssl_types.h" | 14 #include "crypto/scoped_openssl_types.h" |
| 16 | 15 |
| 17 namespace crypto { | 16 namespace crypto { |
| 18 | 17 |
| 19 namespace { | 18 namespace { |
| 20 | 19 |
| 21 const EVP_MD* ToOpenSSLDigest(SignatureCreator::HashAlgorithm hash_alg) { | 20 const EVP_MD* ToOpenSSLDigest(SignatureCreator::HashAlgorithm hash_alg) { |
| 22 switch (hash_alg) { | 21 switch (hash_alg) { |
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| 63 const uint8* data, | 62 const uint8* data, |
| 64 int data_len, | 63 int data_len, |
| 65 std::vector<uint8>* signature) { | 64 std::vector<uint8>* signature) { |
| 66 ScopedRSA rsa_key(EVP_PKEY_get1_RSA(key->key())); | 65 ScopedRSA rsa_key(EVP_PKEY_get1_RSA(key->key())); |
| 67 if (!rsa_key) | 66 if (!rsa_key) |
| 68 return false; | 67 return false; |
| 69 signature->resize(RSA_size(rsa_key.get())); | 68 signature->resize(RSA_size(rsa_key.get())); |
| 70 | 69 |
| 71 unsigned int len = 0; | 70 unsigned int len = 0; |
| 72 if (!RSA_sign(ToOpenSSLDigestType(hash_alg), data, data_len, | 71 if (!RSA_sign(ToOpenSSLDigestType(hash_alg), data, data_len, |
| 73 vector_as_array(signature), &len, rsa_key.get())) { | 72 signature->data(), &len, rsa_key.get())) { |
| 74 signature->clear(); | 73 signature->clear(); |
| 75 return false; | 74 return false; |
| 76 } | 75 } |
| 77 signature->resize(len); | 76 signature->resize(len); |
| 78 return true; | 77 return true; |
| 79 } | 78 } |
| 80 | 79 |
| 81 SignatureCreator::SignatureCreator() | 80 SignatureCreator::SignatureCreator() |
| 82 : sign_context_(EVP_MD_CTX_create()) { | 81 : sign_context_(EVP_MD_CTX_create()) { |
| 83 } | 82 } |
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| 96 | 95 |
| 97 // Determine the maximum length of the signature. | 96 // Determine the maximum length of the signature. |
| 98 size_t len = 0; | 97 size_t len = 0; |
| 99 if (!EVP_DigestSignFinal(sign_context_, NULL, &len)) { | 98 if (!EVP_DigestSignFinal(sign_context_, NULL, &len)) { |
| 100 signature->clear(); | 99 signature->clear(); |
| 101 return false; | 100 return false; |
| 102 } | 101 } |
| 103 signature->resize(len); | 102 signature->resize(len); |
| 104 | 103 |
| 105 // Sign it. | 104 // Sign it. |
| 106 if (!EVP_DigestSignFinal(sign_context_, vector_as_array(signature), &len)) { | 105 if (!EVP_DigestSignFinal(sign_context_, signature->data(), &len)) { |
| 107 signature->clear(); | 106 signature->clear(); |
| 108 return false; | 107 return false; |
| 109 } | 108 } |
| 110 signature->resize(len); | 109 signature->resize(len); |
| 111 return true; | 110 return true; |
| 112 } | 111 } |
| 113 | 112 |
| 114 } // namespace crypto | 113 } // namespace crypto |
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