int[] pc1m = new int[56];
        int[] pcr  = new int[56];
        int[] kn   = new int[32];

        for ( j = 0; j < 56; ++j )  {
            l       = pc1[j];
            m       = l & 07;
            pc1m[j] = ( (keyBlock[l >>> 3] & bytebit[m]) != 0 )? 1: 0;
        }

        for ( i = 0; i < 16; ++i ) {

            if ( encrypting )
                m = i << 1;
            else