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// Copyright 2016 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/cert/merkle_tree_leaf.h"
#include "crypto/sha2.h"
#include "net/cert/ct_objects_extractor.h"
#include "net/cert/ct_serialization.h"
#include "net/cert/x509_certificate.h"
namespace net {
namespace ct {
MerkleTreeLeaf::MerkleTreeLeaf() = default;
MerkleTreeLeaf::MerkleTreeLeaf(const MerkleTreeLeaf& other) = default;
MerkleTreeLeaf::MerkleTreeLeaf(MerkleTreeLeaf&&) = default;
MerkleTreeLeaf::~MerkleTreeLeaf() = default;
bool HashMerkleTreeLeaf(const MerkleTreeLeaf& tree_leaf, std::string* out) {
// Prepend 0 byte as per RFC 6962, section-2.1
std::string leaf_in_tls_format("\x00", 1);
if (!EncodeTreeLeaf(tree_leaf, &leaf_in_tls_format))
return false;
*out = crypto::SHA256HashString(leaf_in_tls_format);
return true;
}
bool GetMerkleTreeLeaf(const X509Certificate* cert,
const SignedCertificateTimestamp* sct,
MerkleTreeLeaf* merkle_tree_leaf) {
if (sct->origin == SignedCertificateTimestamp::SCT_EMBEDDED) {
if (cert->intermediate_buffers().empty() ||
!GetPrecertSignedEntry(cert->cert_buffer(),
cert->intermediate_buffers().front().get(),
&merkle_tree_leaf->signed_entry)) {
return false;
}
} else {
if (!GetX509SignedEntry(cert->cert_buffer(),
&merkle_tree_leaf->signed_entry)) {
return false;
}
}
merkle_tree_leaf->timestamp = sct->timestamp;
merkle_tree_leaf->extensions = sct->extensions;
return true;
}
} // namespace ct
} // namespace net
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