KerberosException
{
ByteBuffer buffer = ByteBuffer.allocate( kdcReqBody.computeLength() );
byte[] bodyBytes = kdcReqBody.encode( buffer ).array();
ChecksumHandler checksumHandler = new ChecksumHandler();
return checksumHandler.calculateChecksum( checksumType, bodyBytes, null, KeyUsage.TGS_REP_ENC_PART_TGS_SESS_KEY );
}