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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 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 "net/quic/crypto/aead_base_decrypter.h" | 5 #include "net/quic/crypto/aead_base_decrypter.h" |
6 | 6 |
7 #include <openssl/err.h> | 7 #include <openssl/err.h> |
8 #include <openssl/evp.h> | 8 #include <openssl/evp.h> |
9 | 9 |
10 #include "base/memory/scoped_ptr.h" | 10 #include "base/memory/scoped_ptr.h" |
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80 bool AeadBaseDecrypter::DecryptPacket(QuicPacketNumber packet_number, | 80 bool AeadBaseDecrypter::DecryptPacket(QuicPacketNumber packet_number, |
81 const StringPiece& associated_data, | 81 const StringPiece& associated_data, |
82 const StringPiece& ciphertext, | 82 const StringPiece& ciphertext, |
83 char* output, | 83 char* output, |
84 size_t* output_length, | 84 size_t* output_length, |
85 size_t max_output_length) { | 85 size_t max_output_length) { |
86 if (ciphertext.length() < auth_tag_size_) { | 86 if (ciphertext.length() < auth_tag_size_) { |
87 return false; | 87 return false; |
88 } | 88 } |
89 | 89 |
90 uint8 nonce[sizeof(nonce_prefix_) + sizeof(packet_number)]; | 90 uint8_t nonce[sizeof(nonce_prefix_) + sizeof(packet_number)]; |
91 const size_t nonce_size = nonce_prefix_size_ + sizeof(packet_number); | 91 const size_t nonce_size = nonce_prefix_size_ + sizeof(packet_number); |
92 memcpy(nonce, nonce_prefix_, nonce_prefix_size_); | 92 memcpy(nonce, nonce_prefix_, nonce_prefix_size_); |
93 memcpy(nonce + nonce_prefix_size_, &packet_number, sizeof(packet_number)); | 93 memcpy(nonce + nonce_prefix_size_, &packet_number, sizeof(packet_number)); |
94 if (!EVP_AEAD_CTX_open( | 94 if (!EVP_AEAD_CTX_open( |
95 ctx_.get(), reinterpret_cast<uint8_t*>(output), output_length, | 95 ctx_.get(), reinterpret_cast<uint8_t*>(output), output_length, |
96 max_output_length, reinterpret_cast<const uint8_t*>(nonce), | 96 max_output_length, reinterpret_cast<const uint8_t*>(nonce), |
97 nonce_size, reinterpret_cast<const uint8_t*>(ciphertext.data()), | 97 nonce_size, reinterpret_cast<const uint8_t*>(ciphertext.data()), |
98 ciphertext.size(), | 98 ciphertext.size(), |
99 reinterpret_cast<const uint8_t*>(associated_data.data()), | 99 reinterpret_cast<const uint8_t*>(associated_data.data()), |
100 associated_data.size())) { | 100 associated_data.size())) { |
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112 | 112 |
113 StringPiece AeadBaseDecrypter::GetNoncePrefix() const { | 113 StringPiece AeadBaseDecrypter::GetNoncePrefix() const { |
114 if (nonce_prefix_size_ == 0) { | 114 if (nonce_prefix_size_ == 0) { |
115 return StringPiece(); | 115 return StringPiece(); |
116 } | 116 } |
117 return StringPiece(reinterpret_cast<const char*>(nonce_prefix_), | 117 return StringPiece(reinterpret_cast<const char*>(nonce_prefix_), |
118 nonce_prefix_size_); | 118 nonce_prefix_size_); |
119 } | 119 } |
120 | 120 |
121 } // namespace net | 121 } // namespace net |
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