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- // Copyright 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.
- #ifndef NET_CERT_CT_SERIALIZATION_H_
- #define NET_CERT_CT_SERIALIZATION_H_
- #include <string>
- #include <vector>
- #include "base/memory/ref_counted.h"
- #include "base/strings/string_piece.h"
- #include "base/time/time.h"
- #include "net/base/net_export.h"
- // Utility functions for encoding/decoding structures used by Certificate
- // Transparency to/from the TLS wire format encoding.
- namespace net::ct {
- struct DigitallySigned;
- struct MerkleTreeLeaf;
- struct SignedCertificateTimestamp;
- struct SignedEntryData;
- struct SignedTreeHead;
- // If |input.signature_data| is less than kMaxSignatureLength, encodes the
- // |input| to |output| and returns true. Otherwise, returns false.
- NET_EXPORT_PRIVATE bool EncodeDigitallySigned(const DigitallySigned& input,
- std::string* output);
- // Reads and decodes a DigitallySigned object from |input|.
- // The bytes read from |input| are discarded (i.e. |input|'s prefix removed)
- // Returns true and fills |output| if all fields can be read, false otherwise.
- NET_EXPORT_PRIVATE bool DecodeDigitallySigned(base::StringPiece* input,
- DigitallySigned* output);
- // Encodes the |input| SignedEntryData to |output|. Returns true if the entry
- // size does not exceed allowed size in RFC6962, false otherwise.
- NET_EXPORT_PRIVATE bool EncodeSignedEntry(const SignedEntryData& input,
- std::string* output);
- // Serialises the Merkle tree |leaf|, appending it to |output|.
- // These bytes can be hashed for use with audit proof fetching.
- // Note that |leaf.log_id| is not part of the TLS encoding, and so will not be
- // serialized.
- NET_EXPORT bool EncodeTreeLeaf(const MerkleTreeLeaf& leaf, std::string* output);
- // Encodes the data signed by a Signed Certificate Timestamp (SCT) into
- // |output|. The signature included in the SCT is then verified over these
- // bytes.
- // |timestamp| timestamp from the SCT.
- // |serialized_log_entry| the log entry signed by the SCT.
- // |extensions| CT extensions.
- // Returns true if the extensions' length does not exceed
- // kMaxExtensionsLength, false otherwise.
- NET_EXPORT_PRIVATE bool EncodeV1SCTSignedData(
- const base::Time& timestamp,
- const std::string& serialized_log_entry,
- const std::string& extensions,
- std::string* output);
- // Encodes the data signed by a Signed Tree Head (STH) |signed_tree_head| into
- // |output|. The signature included in the |signed_tree_head| can then be
- // verified over these bytes.
- // Returns true if the data could be encoded successfully, false
- // otherwise.
- NET_EXPORT_PRIVATE bool EncodeTreeHeadSignature(
- const SignedTreeHead& signed_tree_head,
- std::string* output);
- // Decode a list of Signed Certificate Timestamps
- // (SignedCertificateTimestampList as defined in RFC6962): from a single
- // string in |input| to a vector of individually-encoded SCTs |output|.
- // This list is typically obtained from the CT extension in a certificate.
- // Returns true if the list could be read and decoded successfully, false
- // otherwise (note that the validity of each individual SCT should be checked
- // separately).
- NET_EXPORT_PRIVATE bool DecodeSCTList(base::StringPiece input,
- std::vector<base::StringPiece>* output);
- // Decodes a single SCT from |input| to |output|.
- // Returns true if all fields in the SCT could be read and decoded, false
- // otherwise.
- NET_EXPORT_PRIVATE bool DecodeSignedCertificateTimestamp(
- base::StringPiece* input,
- scoped_refptr<ct::SignedCertificateTimestamp>* output);
- // Serializes a Signed Certificate Timestamp (SCT) into |output|.
- // Returns true if the SCT could be encoded successfully, false
- // otherwise.
- NET_EXPORT bool EncodeSignedCertificateTimestamp(
- const scoped_refptr<ct::SignedCertificateTimestamp>& input,
- std::string* output);
- // Writes an SCTList into |output|, containing a single |sct|.
- NET_EXPORT_PRIVATE bool EncodeSCTListForTesting(const base::StringPiece& sct,
- std::string* output);
- } // namespace net::ct
- #endif // NET_CERT_CT_SERIALIZATION_H_
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