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25 lines
460 B
Go
25 lines
460 B
Go
//go:build (amd64 || arm64 || ppc64 || ppc64le) && !purego
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package zuc
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import (
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"github.com/emmansun/gmsm/internal/cpuid"
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)
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var supportsGFMUL = cpuid.HasGFMUL || cpuid.HasVPMSUMD
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//go:noescape
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func eiaRoundTag4(t *uint32, keyStream *uint32, p *byte)
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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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eiaRoundTag4(&m.t, &m.k0[0], &p[0])
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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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