mirror/gmsm
1
0
Fork 0
mirror of https://github.com/emmansun/gmsm.git synced 2025-05-10 19:16:18 +08:00
Code Issues Packages Projects Releases Wiki Activity

Updated GCM for SM4 (markdown)

Sun Yimin 2022-01-03 14:27:01 +08:00
parent b15cfdfe96
commit a711e72ec8
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
GCM-for-SM4.md

@ -1,5 +1,5 @@
为sm4实现的GCM汇编代码是从AES GCM实现中摘抄的。主要为以下三个函数：
'''
```
//go:noescape
func precomputeTableAsm(productTable *[256]byte, src *[16]byte)
@ -8,7 +8,7 @@ func gcmSm4Data(productTable *[256]byte, data []byte, T *[16]byte)
//go:noescape
func gcmSm4Finish(productTable *[256]byte, tagMask, T *[16]byte, pLen, dLen uint64)
'''
```
1. gcmSm4Finish没有改变，和gcmAesFinish一模一样；
1. precomputeTableAsm和gcmAesInit的区别在于前者没有加密部分，输入参数就是加密结果；