blob: 92b9204986f70b8f34b57f55f791890675d13cf5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
// Copyright (c) 2012 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/quic/crypto/null_decrypter.h"
#include "net/quic/quic_utils.h"
#include "net/quic/quic_data_reader.h"
using base::StringPiece;
using std::string;
namespace net {
bool NullDecrypter::SetKey(StringPiece key) {
return key.empty();
}
bool NullDecrypter::SetNoncePrefix(StringPiece nonce_prefix) {
return nonce_prefix.empty();
}
QuicData* NullDecrypter::Decrypt(QuicPacketSequenceNumber /*sequence_number*/,
StringPiece associated_data,
StringPiece ciphertext) {
QuicDataReader reader(ciphertext.data(), ciphertext.length());
uint128 hash;
if (!reader.ReadUInt128(&hash)) {
return NULL;
}
StringPiece plaintext = reader.ReadRemainingPayload();
// TODO(rch): avoid buffer copy here
string buffer = associated_data.as_string();
plaintext.AppendToString(&buffer);
if (hash != QuicUtils::FNV1a_128_Hash(buffer.data(), buffer.length())) {
return NULL;
}
return new QuicData(plaintext.data(), plaintext.length());
}
} // namespace net
|
