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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 <openssl/aes.h> | 5 #include <openssl/aes.h> |
6 #include <openssl/evp.h> | 6 #include <openssl/evp.h> |
7 | 7 |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "base/numerics/safe_math.h" | 9 #include "base/numerics/safe_math.h" |
10 #include "base/stl_util.h" | 10 #include "base/stl_util.h" |
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58 if (!output_max_len.IsValid()) | 58 if (!output_max_len.IsValid()) |
59 return Status::ErrorDataTooLarge(); | 59 return Status::ErrorDataTooLarge(); |
60 | 60 |
61 const unsigned remainder = output_max_len.ValueOrDie() % AES_BLOCK_SIZE; | 61 const unsigned remainder = output_max_len.ValueOrDie() % AES_BLOCK_SIZE; |
62 if (remainder != 0) | 62 if (remainder != 0) |
63 output_max_len += AES_BLOCK_SIZE - remainder; | 63 output_max_len += AES_BLOCK_SIZE - remainder; |
64 if (!output_max_len.IsValid()) | 64 if (!output_max_len.IsValid()) |
65 return Status::ErrorDataTooLarge(); | 65 return Status::ErrorDataTooLarge(); |
66 | 66 |
67 // Note: PKCS padding is enabled by default | 67 // Note: PKCS padding is enabled by default |
68 crypto::ScopedOpenSSL<EVP_CIPHER_CTX, EVP_CIPHER_CTX_free>::Type context( | 68 crypto::ScopedOpenSSL<EVP_CIPHER_CTX, EVP_CIPHER_CTX_free> context( |
69 EVP_CIPHER_CTX_new()); | 69 EVP_CIPHER_CTX_new()); |
70 | 70 |
71 if (!context.get()) | 71 if (!context.get()) |
72 return Status::OperationError(); | 72 return Status::OperationError(); |
73 | 73 |
74 const EVP_CIPHER* const cipher = GetAESCipherByKeyLength(raw_key.size()); | 74 const EVP_CIPHER* const cipher = GetAESCipherByKeyLength(raw_key.size()); |
75 DCHECK(cipher); | 75 DCHECK(cipher); |
76 | 76 |
77 if (!EVP_CipherInit_ex(context.get(), cipher, NULL, &raw_key[0], | 77 if (!EVP_CipherInit_ex(context.get(), cipher, NULL, &raw_key[0], |
78 params->iv().data(), cipher_operation)) { | 78 params->iv().data(), cipher_operation)) { |
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124 | 124 |
125 } // namespace | 125 } // namespace |
126 | 126 |
127 AlgorithmImplementation* CreatePlatformAesCbcImplementation() { | 127 AlgorithmImplementation* CreatePlatformAesCbcImplementation() { |
128 return new AesCbcImplementation; | 128 return new AesCbcImplementation; |
129 } | 129 } |
130 | 130 |
131 } // namespace webcrypto | 131 } // namespace webcrypto |
132 | 132 |
133 } // namespace content | 133 } // namespace content |
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