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AES_RROUND macro
Syntax
#define AES_RROUND(X0,X1,X2,X3,Y0,Y1,Y2,Y3) \
do \
{ \
(X0) = *RK++ ^ AES_RT0( ( (Y0) ) & 0xFF ) ^ \
AES_RT1( ( (Y3) >> 8 ) & 0xFF ) ^ \
AES_RT2( ( (Y2) >> 16 ) & 0xFF ) ^ \
AES_RT3( ( (Y1) >> 24 ) & 0xFF ); \
\
(X1) = *RK++ ^ AES_RT0( ( (Y1) ) & 0xFF ) ^ \
AES_RT1( ( (Y0) >> 8 ) & 0xFF ) ^ \
AES_RT2( ( (Y3) >> 16 ) & 0xFF ) ^ \
AES_RT3( ( (Y2) >> 24 ) & 0xFF ); \
\
(X2) = *RK++ ^ AES_RT0( ( (Y2) ) & 0xFF ) ^ \
AES_RT1( ( (Y1) >> 8 ) & 0xFF ) ^ \
AES_RT2( ( (Y0) >> 16 ) & 0xFF ) ^ \
AES_RT3( ( (Y3) >> 24 ) & 0xFF ); \
\
(X3) = *RK++ ^ AES_RT0( ( (Y3) ) & 0xFF ) ^ \
AES_RT1( ( (Y2) >> 8 ) & 0xFF ) ^ \
AES_RT2( ( (Y1) >> 16 ) & 0xFF ) ^ \
AES_RT3( ( (Y0) >> 24 ) & 0xFF ); \
} while( 0 )