GenerateRecordPayloadMAC

function GenerateRecordPayloadMAC(

  const ProtocolVersion: TTLSProtocolVersion;

  const CipherSuiteDetails: TTLSCipherSuiteDetails;

  const Key;

  const KeySize: Integer;

  const SequenceNumber: Int64;

  const TLSCompressedHdr: PTLSRecordHeader;

  const TLSCompressedBuf;

  const TLSCompressedBufSize: Integer;

  var Digest;

  const DigestSize: Integer

):Integer;