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25 lines
538 B
Go
25 lines
538 B
Go
//go:build (amd64 && !generic)
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// +build amd64,!generic
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package zuc
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import "golang.org/x/sys/cpu"
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var supportsGFMUL = cpu.X86.HasPCLMULQDQ || cpu.ARM64.HasPMULL
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var useAVX2 = cpu.X86.HasAVX2 && cpu.X86.HasBMI2
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//go:noescape
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func eia3Round16B(t *uint32, keyStream *uint32, p *byte, tagSize int)
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func block(m *ZUC128Mac, p []byte) {
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if supportsGFMUL {
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for len(p) >= chunk {
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m.genKeywords(m.k0[4:])
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eia3Round16B(&m.t, &m.k0[0], &p[0], m.tagSize)
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p = p[chunk:]
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}
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} else {
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blockGeneric(m, p)
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}
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}
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