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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_CERT_SIGNED_TREE_HEAD_H_
#define NET_CERT_SIGNED_TREE_HEAD_H_
#include <stdint.h>
#include <string>
#include "base/containers/span.h"
#include "base/time/time.h"
#include "net/base/hash_value.h"
#include "net/base/net_export.h"
#include "net/cert/signed_certificate_timestamp.h"
namespace net::ct {
static constexpr uint8_t kSthRootHashLength = 32;
// Signed Tree Head as defined in section 3.5. of RFC6962
struct NET_EXPORT SignedTreeHead {
// Version enum in RFC 6962, Section 3.2. Note that while in the current
// RFC the STH and SCT share the versioning scheme, there are plans in
// RFC6962-bis to use separate versions, so using a separate scheme here.
enum Version { V1 = 0, };
SignedTreeHead();
SignedTreeHead(Version version,
const base::Time& timestamp,
uint64_t tree_size,
base::span<const uint8_t, kSthRootHashLength> sha256_root_hash,
const DigitallySigned& signature,
const std::string& log_id);
SignedTreeHead(const SignedTreeHead& other);
~SignedTreeHead();
Version version;
base::Time timestamp;
uint64_t tree_size;
char sha256_root_hash[kSthRootHashLength];
DigitallySigned signature;
// Added in RFC6962-bis, Appendix A. Needed to identify which log
// this STH belongs to.
std::string log_id;
};
NET_EXPORT void PrintTo(const SignedTreeHead& sth, std::ostream* os);
NET_EXPORT bool operator==(const SignedTreeHead& lhs,
const SignedTreeHead& rhs);
} // namespace net::ct
#endif // NET_CERT_SIGNED_TREE_HEAD_H_
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