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Updated SM2 MFMM (2) (markdown)

Sun Yimin 2024-02-22 10:26:37 +08:00
parent eed9045293
commit 75d0ce1057
1 changed files with 24 additions and 0 deletions
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SM2-MFMM-(2).md

@ -55,6 +55,30 @@ $t_3=t_3 + t_0 \ast p_3$
乘法: 3 乘法: 3
加法：10 加法：10
使用MULXQ/ADCXQ/ADOXQ:
```asm
MOVQ t0, DX
XORQ BX, BX
XORQ SI, SI
MULXQ p1, AX, DI
ADCXQ BX, AX
ADOXQ AX, t1
MULXQ p2, AX, BX
ADCXQ DI, AX
ADOXQ AX, t2
MULXQ p3, AX, t0
ADCXQ BX, AX
ADOXQ AX, t3
ADCXQ SI, t0
ADOXQ SI, t0
```
乘法: 3
加法：8
### 方案二：(移位、加法、减法) ### 方案二：(移位、加法、减法)
$T_2=T_1 \ast P=t_0 \ast P= t_0 \ast (2^{256}-(2^{32} \ast 2^{192} + 0 \ast 2^{128} + (2^{32} - 1) \ast 2^{64} + 1))$ $T_2=T_1 \ast P=t_0 \ast P= t_0 \ast (2^{256}-(2^{32} \ast 2^{192} + 0 \ast 2^{128} + (2^{32} - 1) \ast 2^{64} + 1))$
$T_2=t_0 \ast 2^{256} - t_0 \ast 2^{32} \ast 2^{192} - t_0 \ast (2^{32} - 1) \ast 2^{64} - t_0$ $T_2=t_0 \ast 2^{256} - t_0 \ast 2^{32} \ast 2^{192} - t_0 \ast (2^{32} - 1) \ast 2^{64} - t_0$