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Updated Efficient Software Implementations of ZUC (markdown)

Sun Yimin 2024-11-26 08:22:15 +08:00
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Efficient-Software-Implementations-of-ZUC.md

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## AMD64 SHLD SHRD的性能
经过测试，SHLD/SHRD的性能还不如目前的多条指令实现。
```asm
BYTE $0x41; BYTE $0x0F; BYTE $0xA4; BYTE $0xC3; BYTE $0x10 \ // SHLDL(BRC_X0, AX, $16)
BYTE $0x41; BYTE $0x0F; BYTE $0xA4; BYTE $0xDC; BYTE $0x10 \ // SHLDL(BRC_X1, BX, $16)
BYTE $0x41; BYTE $0x0F; BYTE $0xA4; BYTE $0xCD; BYTE $0x10 \ // SHLDL(BRC_X2, CX, $16)
BYTE $0x41; BYTE $0x0F; BYTE $0xA4; BYTE $0xD6; BYTE $0x10
```
## 参考：
1. [zuc sbox with aesni](https://gist.github.com/emmansun/ae4677d71c75ff8407d5f5b3a884f5d2), This is the pure golang code to study ZUC implementation with AESENCLAST/AESE instruction.