DES_HW
DES_ENCRYPT | DES_HW, (char *)&ivec);
DES_ENCRYPT | DES_HW);
(u_int)sizeof (des_block), DES_DECRYPT | DES_HW);
2*sizeof(des_block), DES_DECRYPT | DES_HW,
sizeof(des_block), DES_DECRYPT | DES_HW);
sizeof(des_block), DES_ENCRYPT | DES_HW);
err = cbc_crypt(key, buf, len, DES_DECRYPT | DES_HW, ivec);
err = cbc_crypt(key, buf, len, DES_ENCRYPT | DES_HW, ivec);