mirror of
https://github.com/fumiama/gofastTEA.git
synced 2026-06-05 07:50:26 +08:00
29 lines
626 B
Go
29 lines
626 B
Go
//go:build (!go1.17 && amd64) || !amd64
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// +build !go1.17,amd64 !amd64
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package tea
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import (
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"encoding/binary"
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_ "unsafe" // required by go:linkname
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)
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// Uint32 returns a lock free uint32 value.
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//go:linkname Uint32 runtime.fastrand
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func Uint32() uint32
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// Encrypt tea 加密
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// http://bbs.chinaunix.net/thread-583468-1-1.html
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// 感谢xichen大佬对TEA的解释
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//go:nosplit
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func NewTeaCipher(key []byte) (t TEA) {
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if len(key) == 16 {
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t[3] = binary.BigEndian.Uint32(key[12:])
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t[2] = binary.BigEndian.Uint32(key[8:])
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t[1] = binary.BigEndian.Uint32(key[4:])
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t[0] = binary.BigEndian.Uint32(key[0:])
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}
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return
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}
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