/// <summary> /// Create a new enclave session /// </summary> /// <param name="enclaveType">enclave type</param> /// <param name="serverName">servername</param> /// <param name="attestationUrl">attestation url for attestation service endpoint</param> /// <param name="attestationInfo">attestation info from SQL Server</param> /// <param name="attestationParameters">attestation parameters</param> internal void CreateEnclaveSession(string enclaveType, string serverName, string attestationUrl, byte[] attestationInfo, SqlEnclaveAttestationParameters attestationParameters) { lock (_lock) { SqlColumnEncryptionEnclaveProvider sqlColumnEncryptionEnclaveProvider = GetEnclaveProvider(enclaveType); long counter; SqlEnclaveSession sqlEnclaveSession = null; sqlColumnEncryptionEnclaveProvider.GetEnclaveSession(serverName, attestationUrl, out sqlEnclaveSession, out counter); if (sqlEnclaveSession != null) { return; } sqlColumnEncryptionEnclaveProvider.CreateEnclaveSession(attestationInfo, attestationParameters.ClientDiffieHellmanKey, attestationUrl, serverName, out sqlEnclaveSession, out counter); if (sqlEnclaveSession == null) { throw SQL.NullEnclaveSessionReturnedFromProvider(enclaveType, attestationUrl); } } }
internal byte[] GetSerializedAttestationParameters(SqlEnclaveAttestationParameters sqlEnclaveAttestationParameters, string enclaveType) { byte[] attestationProtocolBytes = null; byte[] attestationProtocolInputLengthBytes = null; byte[] clientDHPublicKeyLengthBytes = null; int attestationProtocolInt = sqlEnclaveAttestationParameters.Protocol; // attestation protocol attestationProtocolBytes = GetUintBytes(enclaveType, attestationProtocolInt, "attestationProtocol"); if (attestationProtocolBytes == null) { throw SQL.NullArgumentInternal("attestationProtocolBytes", ClassName, GetSerializedAttestationParametersName); } // attestationProtocolInput byte[] attestationProtocolInputBytes = sqlEnclaveAttestationParameters.GetInput(); // attestationProtocolInput length attestationProtocolInputLengthBytes = GetUintBytes(enclaveType, attestationProtocolInputBytes.Length, "attestationProtocolInputLength"); if (attestationProtocolInputLengthBytes == null) { throw SQL.NullArgumentInternal("attestationProtocolInputLengthBytes", ClassName, GetSerializedAttestationParametersName); } // clientDHPublicKey byte[] clientDHPublicKey = sqlEnclaveAttestationParameters.ClientDiffieHellmanKey.Key.Export(CngKeyBlobFormat.EccPublicBlob); // clientDHPublicKey length clientDHPublicKeyLengthBytes = GetUintBytes(enclaveType, clientDHPublicKey.Length, "clientDHPublicKeyLength"); if (clientDHPublicKeyLengthBytes == null) { throw SQL.NullArgumentInternal("clientDHPublicKeyLengthBytes", ClassName, GetSerializedAttestationParametersName); } return(CombineByteArrays(new[] { attestationProtocolBytes, attestationProtocolInputLengthBytes, attestationProtocolInputBytes, clientDHPublicKeyLengthBytes, clientDHPublicKey })); }