Updated SM2 WWMM (2) (markdown)

SM2-WWMM-(2).md

@@ -405,6 +405,7 @@ $T_2=T_1 \ast O=Y \ast O= Y \ast 2^{256}-(Y \ast 2^{32}) \ast 2^{192} - Y \ast 2
 $T_3=T + T_2=t_7 \ast 2^{448} + t_6 \ast 2^{384} + t_5 \ast 2^{320} + t_4 \ast 2^{256} + t_3 \ast 2^{192} + t_2 \ast 2^{128} + t_1 \ast 2^{64} + t_0 + Y \ast 2^{256}-(Y \ast 2^{32}) \ast 2^{192} - Y \ast 2^{128} + (Y \ast O_1) \ast 2^{64} + (Y \ast O_0) $  
 $T_3=t_7 \ast 2^{448} + t_6 \ast 2^{384} + t_5 \ast 2^{320} + (t_4+Y) \ast 2^{256}+(t_3 - Y \ast 2^{32}) \ast 2^{192} + (t_2 - Y) \ast 2^{128} + (t_1 + Y \ast O_1) \ast 2^{64} + (t_0 + Y \ast O_0)  $  
 
+**依然采用先减后加！**  
 ```asm
 	// First reduction step
 	MOVQ acc0, AX