// ------------------------------------------------
public final short pbocpadding(byte[] data, short len) {
short f;
data[len] = (byte) 0x80;
len++;
f = (short) (len % 8);
f = (short) (8 - f);
if (f != (short) 8) Util.arrayFillNonAtomic(data, len, f, (byte) 0);
else f = (short) 0;
return (short) (len + f);
}
// ------------------------------------------------
public final void gmac4(byte alg, byte[] key, byte[] data, short dl, byte[] mac) {
dl = pbocpadding(data, dl);
Util.arrayFillNonAtomic(tbuf1, (short) 0, (short) 8, (byte) 0);
for (short i = (short) 0; i < dl; i += (short) 8) {
xorblock8(tbuf1, data, i);
cdes(key, (short) 0, tbuf1, (short) 0, (short) 8, tbuf2, (short) 0, Cipher.MODE_ENCRYPT);
Util.arrayCopyNonAtomic(tbuf2, (short) 0, tbuf1, (short) 0, (short) 8);
}
if (alg == ALG_3DES) {
cdes(key, (short) 8, tbuf1, (short) 0, (short) 8, tbuf2, (short) 0, Cipher.MODE_DECRYPT);
cdes(key, (short) 0, tbuf2, (short) 0, (short) 8, tbuf1, (short) 0, Cipher.MODE_ENCRYPT);
}
Util.arrayCopyNonAtomic(tbuf1, (short) 0, mac, (short) 0, (short) 4);
}