s0 = \
(
_ad4[(t0 ) & 0xff] & 0x000000ff) ^ \
(
_ad4[(t3 >> 8) & 0xff] & 0x0000ff00) ^ \
(
_ad4[(t2 >> 16) & 0xff] & 0x00ff0000) ^ \
(
_ad4[(t1 >> 24) ] & 0xff000000) ^ \
rk[0]; \
s1 = \
(
_ad4[(t1 ) & 0xff] & 0x000000ff) ^ \
(
_ad4[(t0 >> 8) & 0xff] & 0x0000ff00) ^ \
(
_ad4[(t3 >> 16) & 0xff] & 0x00ff0000) ^ \
(
_ad4[(t2 >> 24) ] & 0xff000000) ^ \
rk[1]; \
s2 = \
(
_ad4[(t2 ) & 0xff] & 0x000000ff) ^ \
(
_ad4[(t1 >> 8) & 0xff] & 0x0000ff00) ^ \
(
_ad4[(t0 >> 16) & 0xff] & 0x00ff0000) ^ \
(
_ad4[(t3 >> 24) ] & 0xff000000) ^ \
rk[2]; \
s3 = \
(
_ad4[(t3 ) & 0xff] & 0x000000ff) ^ \
(
_ad4[(t2 >> 8) & 0xff] & 0x0000ff00) ^ \
(
_ad4[(t1 >> 16) & 0xff] & 0x00ff0000) ^ \
(
_ad4[(t0 >> 24) ] & 0xff000000) ^ \
rk[3];