mirror/gmsm
1
0
Fork 0
mirror of https://github.com/emmansun/gmsm.git synced 2025-05-11 03:26:17 +08:00
Code Issues Packages Projects Releases Wiki Activity

Updated SM4 with AESENCLAST (markdown)

Sun Yimin 2021-10-29 10:25:41 +08:00
parent a62e735b72
commit 471d6d7d34
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
SM4-with-AESENCLAST.md

@ -24,6 +24,9 @@ My question is how to generate all (M1, C1, M2, C2)?
**Evolution path**
sm4_box_aesenclast <-> sm4_box_aesbox_1 <-> sm4_box_aesbox_2 <-> sm4_box_aesbox_3 <-> sm4_box_aesbox_4
**We note that each affine transform can be constructed from XOR of two 4x8-bit table lookups, which we implement with constant time byte shuffle instructions (each 16-entry table is in a single 128-bit register).**
```
sm4_box_aesenclast
y := mm_and_si128(x, const_0f)