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Updated SM2 MFMM (2) (markdown)

Sun Yimin 2024-02-22 15:49:04 +08:00
parent 2e4b8cf5f8
commit 85c22bf09c
1 changed files with 41 additions and 17 deletions
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58
SM2-MFMM-(2).md

@ -219,26 +219,50 @@ $t_5=t_5 - 0$
伪代码：
```asm
// First reduction step
MOVQ acc0, AX
MOVQ acc0, DX
SHLQ $32, AX
SHRQ $32, DX
ADDQ acc0, acc1
ADCQ $0, acc2
ADCQ $0, acc3
ADCQ acc0, acc4
ADCQ $0, acc5
XORQ acc5, acc5
// First reduction step
MOVQ acc0, AX
MOVQ acc0, DX
SHLQ $32, AX
SHRQ $32, DX
ADDQ acc0, acc1
ADCQ $0, acc2
ADCQ $0, acc3
ADCQ acc0, acc4
ADCQ $0, acc5
SUBQ AX, acc1
SBBQ DX, acc2
SBBQ AX, acc3
SBBQ DX, acc4
SBBQ $0, acc5
SUBQ AX, acc1
SBBQ DX, acc2
SBBQ AX, acc3
SBBQ DX, acc4
SBBQ $0, acc5
```
移位: 2
加法：5
减法：5
如果先使用减法：
```asm
XORQ acc5, acc5
// First reduction step
MOVQ acc0, AX
MOVQ acc0, DX
SHLQ $32, AX
SHRQ $32, DX
SUBQ AX, acc1
SBBQ DX, acc2
SBBQ AX, acc3
MOVQ acc0, AX
SBBQ DX, acc0
ADDQ AX, acc1
ADCQ $0, acc2
ADCQ $0, acc3
ADCQ acc0, acc4
ADCQ $0, acc5
```
移位: 2
加法：5
减法：4