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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef tls_protection_h_
#define tls_protection_h_
#include <cstdint>
#include <memory>
#include "pk11pub.h"
#include "sslt.h"
#include "sslexp.h"
#include "databuffer.h"
#include "scoped_ptrs_ssl.h"
namespace nss_test {
class TlsRecordHeader;
// Our analog of ssl3CipherSpec
class TlsCipherSpec {
public:
TlsCipherSpec(bool dtls, uint16_t epoc);
bool SetKeys(SSLCipherSuiteInfo* cipherinfo, PK11SymKey* secret);
bool Protect(const TlsRecordHeader& header, const DataBuffer& plaintext,
DataBuffer* ciphertext, TlsRecordHeader* out_header);
bool Unprotect(const TlsRecordHeader& header, const DataBuffer& ciphertext,
DataBuffer* plaintext, TlsRecordHeader* out_header);
uint16_t epoch() const { return epoch_; }
uint64_t next_in_seqno() const { return in_seqno_; }
void RecordUnprotected(uint64_t seqno) {
// Reordering happens, so don't let this go backwards.
in_seqno_ = (std::max)(in_seqno_, seqno + 1);
}
uint64_t next_out_seqno() { return out_seqno_; }
void RecordProtected() { out_seqno_++; }
void RecordDropped() { record_dropped_ = true; }
bool record_dropped() const { return record_dropped_; }
bool is_protected() const { return aead_ != nullptr; }
private:
bool dtls_;
uint16_t epoch_;
uint64_t in_seqno_;
uint64_t out_seqno_;
bool record_dropped_ = false;
ScopedSSLAeadContext aead_;
ScopedSSLMaskingContext mask_;
};
} // namespace nss_test
#endif
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