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38 lines
728 B
Go
38 lines
728 B
Go
//go:build (amd64 && !generic) || (arm64 && !generic)
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// +build amd64,!generic arm64,!generic
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package zuc
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import (
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"golang.org/x/sys/cpu"
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)
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var supportsAES = cpu.X86.HasAES || cpu.ARM64.HasAES
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var useAVX = cpu.X86.HasAVX
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//go:noescape
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func genKeywordAsm(s *zucState32) uint32
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//go:noescape
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func genKeyStreamAsm(keyStream []uint32, pState *zucState32)
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func genKeyStream(keyStream []uint32, pState *zucState32) {
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if supportsAES {
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genKeyStreamAsm(keyStream, pState)
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return
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}
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for i := 0; i < len(keyStream); i++ {
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keyStream[i] = genKeyword(pState)
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}
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}
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func genKeyword(s *zucState32) uint32 {
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if supportsAES {
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return genKeywordAsm(s)
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}
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s.bitReorganization()
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z := s.x3 ^ s.f32()
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s.enterWorkMode()
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return z
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}
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