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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/third_party/quiche/src/quic/core/crypto/aes_base_encrypter.h"
#include "third_party/boringssl/src/include/openssl/aes.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_bug_tracker.h"
#include "net/third_party/quiche/src/common/platform/api/quiche_string_piece.h"
namespace quic {
bool AesBaseEncrypter::SetHeaderProtectionKey(quiche::QuicheStringPiece key) {
if (key.size() != GetKeySize()) {
QUIC_BUG << "Invalid key size for header protection: " << key.size();
return false;
}
if (AES_set_encrypt_key(reinterpret_cast<const uint8_t*>(key.data()),
key.size() * 8, &pne_key_) != 0) {
QUIC_BUG << "Unexpected failure of AES_set_encrypt_key";
return false;
}
return true;
}
std::string AesBaseEncrypter::GenerateHeaderProtectionMask(
quiche::QuicheStringPiece sample) {
if (sample.size() != AES_BLOCK_SIZE) {
return std::string();
}
std::string out(AES_BLOCK_SIZE, 0);
AES_encrypt(reinterpret_cast<const uint8_t*>(sample.data()),
reinterpret_cast<uint8_t*>(const_cast<char*>(out.data())),
&pne_key_);
return out;
}
} // namespace quic
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