README
¶
gofastTEA
TEA 编码算法的 PLAN9 汇编优化实现
编译逻辑
- 大于等于 1.17 版本且是 amd64，使用非
asm非内联算法 - 大于等于 1.17 版本且不是 amd64，使用非
asm内联算法 - 小于 1.17 版本且是 amd64，使用
asm内联算法 - 小于 1.17 版本且不是 amd64，使用非
asm内联算法
1.17 版本及以上
代码与MiraiGo相比，替换了随机算法为runtime.fastrand，且简化了Decrypt，提升速度如下。
name old time/op new time/op delta
TEAen/16-8 241ns ± 1% 225ns ± 1% -6.97% (p=0.000 n=9+10)
TEAen/256-8 1.71µs ± 1% 1.68µs ± 1% -1.31% (p=0.000 n=10+9)
TEAen/4K-8 25.0µs ± 1% 25.0µs ± 1% ~ (p=0.497 n=10+9)
TEAen/32K-8 203µs ± 0% 202µs ± 0% ~ (p=0.079 n=10+9)
TEAde/16-8 208ns ± 1% 208ns ± 0% ~ (p=0.914 n=9+9)
TEAde/256-8 1.65µs ± 1% 1.65µs ± 1% ~ (p=0.429 n=9+10)
TEAde/4K-8 24.7µs ± 1% 24.5µs ± 1% -0.44% (p=0.026 n=9+10)
TEAde/32K-8 200µs ± 1% 199µs ± 0% -0.37% (p=0.001 n=9+9)
name old speed new speed delta
TEAen/16-8 66.3MB/s ± 1% 71.3MB/s ± 1% +7.50% (p=0.000 n=9+10)
TEAen/256-8 150MB/s ± 1% 152MB/s ± 1% +1.31% (p=0.000 n=10+9)
TEAen/4K-8 164MB/s ± 1% 164MB/s ± 1% ~ (p=0.497 n=10+9)
TEAen/32K-8 162MB/s ± 0% 162MB/s ± 0% ~ (p=0.075 n=10+9)
TEAde/16-8 154MB/s ± 1% 154MB/s ± 0% ~ (p=0.982 n=9+9)
TEAde/256-8 165MB/s ± 1% 165MB/s ± 1% ~ (p=0.399 n=9+10)
TEAde/4K-8 167MB/s ± 1% 168MB/s ± 1% +0.44% (p=0.026 n=9+10)
TEAde/32K-8 164MB/s ± 1% 165MB/s ± 0% +0.37% (p=0.001 n=9+9)
1.16 版本及以下
使用 PLAN9 汇编编写Encrypt，内联编写Decrypt，替换了加密算法为runtime.fastrand，与MiraiGo代码同在go1.16版本下编译相比，提升速度如下（new16.txt）。
name old time/op new time/op delta
TEAen/16-8 252ns ± 0% 227ns ± 0% -10.00% (p=0.000 n=9+10)
TEAen/256-8 1.77µs ± 1% 1.66µs ± 0% -6.28% (p=0.000 n=9+10)
TEAen/4K-8 25.9µs ± 0% 24.9µs ± 1% -3.65% (p=0.000 n=10+10)
TEAen/32K-8 208µs ± 1% 200µs ± 0% -3.70% (p=0.000 n=10+9)
TEAde/16-8 216ns ± 1% 210ns ± 1% -3.04% (p=0.000 n=10+10)
TEAde/256-8 1.71µs ± 1% 1.66µs ± 1% -2.93% (p=0.000 n=10+10)
TEAde/4K-8 25.4µs ± 1% 24.8µs ± 0% -2.36% (p=0.000 n=10+9)
TEAde/32K-8 206µs ± 0% 200µs ± 0% -2.53% (p=0.000 n=9+9)
name old speed new speed delta
TEAen/16-8 63.5MB/s ± 0% 70.6MB/s ± 0% +11.12% (p=0.000 n=9+10)
TEAen/256-8 145MB/s ± 1% 154MB/s ± 0% +6.69% (p=0.000 n=9+10)
TEAen/4K-8 158MB/s ± 0% 164MB/s ± 1% +3.79% (p=0.000 n=10+10)
TEAen/32K-8 158MB/s ± 1% 164MB/s ± 0% +3.84% (p=0.000 n=10+9)
TEAde/16-8 148MB/s ± 1% 152MB/s ± 1% +3.12% (p=0.000 n=10+10)
TEAde/256-8 160MB/s ± 1% 164MB/s ± 1% +3.01% (p=0.000 n=10+10)
TEAde/4K-8 162MB/s ± 1% 166MB/s ± 0% +2.41% (p=0.000 n=10+9)
TEAde/32K-8 159MB/s ± 0% 164MB/s ± 0% +2.60% (p=0.000 n=9+9)
另外MiraiGo本身在go1.16版本与在go1.17版本下编译相比，提升速度如下（new17.txt）。
name old time/op new time/op delta
TEAen/16-8 252ns ± 0% 241ns ± 1% -4.09% (p=0.000 n=9+10)
TEAen/256-8 1.77µs ± 1% 1.70µs ± 0% -3.85% (p=0.000 n=9+10)
TEAen/4K-8 25.9µs ± 0% 24.9µs ± 1% -3.59% (p=0.000 n=10+10)
TEAen/32K-8 208µs ± 1% 200µs ± 1% -3.78% (p=0.000 n=10+10)
TEAde/16-8 216ns ± 1% 208ns ± 1% -3.80% (p=0.000 n=10+10)
TEAde/256-8 1.71µs ± 1% 1.65µs ± 1% -3.44% (p=0.000 n=10+10)
TEAde/4K-8 25.4µs ± 1% 24.5µs ± 0% -3.40% (p=0.000 n=10+10)
TEAde/32K-8 206µs ± 0% 199µs ± 0% -3.36% (p=0.000 n=9+10)
name old speed new speed delta
TEAen/16-8 63.5MB/s ± 0% 66.3MB/s ± 1% +4.27% (p=0.000 n=9+10)
TEAen/256-8 145MB/s ± 1% 150MB/s ± 0% +4.01% (p=0.000 n=9+10)
TEAen/4K-8 158MB/s ± 0% 164MB/s ± 1% +3.73% (p=0.000 n=10+10)
TEAen/32K-8 158MB/s ± 1% 164MB/s ± 1% +3.93% (p=0.000 n=10+10)
TEAde/16-8 148MB/s ± 1% 154MB/s ± 1% +3.95% (p=0.000 n=10+10)
TEAde/256-8 160MB/s ± 1% 165MB/s ± 1% +3.55% (p=0.000 n=10+10)
TEAde/4K-8 162MB/s ± 1% 168MB/s ± 0% +3.52% (p=0.000 n=10+10)
TEAde/32K-8 159MB/s ± 0% 165MB/s ± 0% +3.45% (p=0.000 n=9+9)
可见在编码时，在go1.16版本下的某些时候（编码大小在0-16kb之间），gofastTEA比go1.17版本的MiraiGo实现更快，且整体来看，gofastTEA在go1.16版本下的执行效率已经可以与MiraiGo实现的go1.17版本基本持平。
Documentation
¶
Overview ¶
Package tea from https://github.com/Mrs4s/MiraiGo/blob/master/binary/tea.go
Index ¶
- type TEA
- func (t TEA) Decrypt(data []byte) []byte
- func (t TEA) DecryptLittleEndian(data []byte, sumtable [0x10]uint32) []byte
- func (t TEA) DecryptLittleEndianTo(data []byte, sumtable [0x10]uint32, dst []byte) (from, to int)
- func (t TEA) DecryptTo(data []byte, dst []byte) (from, to int)
- func (t TEA) Encrypt(src []byte) (dst []byte)
- func (t TEA) EncryptLittleEndian(src []byte, sumtable [0x10]uint32) (dst []byte)
- func (t TEA) EncryptLittleEndianTo(src []byte, sumtable [0x10]uint32, dst []byte) int
- func (t TEA) EncryptTo(src []byte, dst []byte) int
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type TEA ¶
type TEA [4]uint32
func NewTeaCipher ¶
func NewTeaCipherLittleEndian ¶ added in v0.0.6
func (TEA) DecryptLittleEndian ¶ added in v0.0.6
func (TEA) DecryptLittleEndianTo ¶ added in v0.0.8
func (TEA) Encrypt ¶
Encrypt tea 加密 http://bbs.chinaunix.net/thread-583468-1-1.html 感谢xichen大佬对TEA的解释
func (TEA) EncryptLittleEndian ¶ added in v0.0.6
func (TEA) EncryptLittleEndianTo ¶ added in v0.0.8
Source Files
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