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#ifndef CERT_TRANS_LOG_LOG_SIGNER_H_
#define CERT_TRANS_LOG_LOG_SIGNER_H_
#include <openssl/evp.h>
#include <openssl/x509.h> // for i2d_PUBKEY
#include <stdint.h>
#include "log/signer.h"
#include "log/verifier.h"
#include "proto/ct.pb.h"
#include "proto/serializer.h"
class LogSigner : public cert_trans::Signer {
public:
explicit LogSigner(EVP_PKEY* pkey);
virtual ~LogSigner();
enum SignResult {
OK,
INVALID_ENTRY_TYPE,
EMPTY_CERTIFICATE,
CERTIFICATE_TOO_LONG,
INVALID_HASH_LENGTH,
UNSUPPORTED_VERSION,
EXTENSIONS_TOO_LONG,
};
// The protobuf-agnostic library version:
// sign the cert timestamp and return the result as a serialized
// signature string.
// In accordance with the spec, timestamp should be UTC time,
// since January 1, 1970, 00:00, in milliseconds.
SignResult SignV1CertificateTimestamp(uint64_t timestamp,
const std::string& leaf_certificate,
const std::string& extensions,
std::string* result) const;
SignResult SignV1PrecertificateTimestamp(uint64_t timestamp,
const std::string& issuer_key_hash,
const std::string& tbs_certificate,
const std::string& extensions,
std::string* result) const;
// Sign the cert timestamp and write the resulting DigitallySigned
// signature message into |sct|.
SignResult SignCertificateTimestamp(
const ct::LogEntry& entry, ct::SignedCertificateTimestamp* sct) const;
SignResult SignV1TreeHead(uint64_t timestamp, int64_t tree_size,
const std::string& root_hash,
std::string* result) const;
SignResult SignTreeHead(ct::SignedTreeHead* sth) const;
private:
static SignResult GetSerializeError(
cert_trans::serialization::SerializeResult result);
};
class LogSigVerifier : public cert_trans::Verifier {
public:
explicit LogSigVerifier(EVP_PKEY* pkey);
virtual ~LogSigVerifier();
enum VerifyResult {
OK,
INVALID_HASH_ALGORITHM,
INVALID_SIGNATURE_ALGORITHM,
SIGNATURE_TOO_SHORT,
SIGNATURE_TOO_LONG,
INVALID_ENTRY_TYPE,
EMPTY_CERTIFICATE,
CERTIFICATE_TOO_LONG,
HASH_ALGORITHM_MISMATCH,
SIGNATURE_ALGORITHM_MISMATCH,
INVALID_SIGNATURE,
INVALID_HASH_LENGTH,
UNSUPPORTED_VERSION,
EXTENSIONS_TOO_LONG,
KEY_ID_MISMATCH,
};
// The protobuf-agnostic library version.
VerifyResult VerifyV1CertSCTSignature(uint64_t timestamp,
const std::string& leaf_cert,
const std::string& extensions,
const std::string& signature) const;
VerifyResult VerifyV1PrecertSCTSignature(uint64_t timestamp,
const std::string& issuer_key_hash,
const std::string& tbs_cert,
const std::string& extensions,
const std::string& signature) const;
VerifyResult VerifySCTSignature(
const ct::LogEntry& entry,
const ct::SignedCertificateTimestamp& sct) const;
// The protobuf-agnostic library version.
VerifyResult VerifyV1STHSignature(uint64_t timestamp, int64_t tree_size,
const std::string& root_hash,
const std::string& signature) const;
VerifyResult VerifySTHSignature(const ct::SignedTreeHead& sth) const;
private:
static VerifyResult GetSerializeError(
cert_trans::serialization::SerializeResult result);
static VerifyResult GetDeserializeSignatureError(
cert_trans::serialization::DeserializeResult result);
};
#endif // CERT_TRANS_LOG_LOG_SIGNER_H_
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