encryptBlockAsm (aes/aes_asm.go)

Hardware‑accelerated AES block encryption/decryption for Go's crypto package.

// Source: https://github.com/golang/go | License: BSD-3-Clause | Copyright 2009 The Go Authors
// Provided via justclaw.it.com; keep this notice with the code.
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build (amd64 || arm64 || loong64 || ppc64 || ppc64le) && !purego

package aes

import (
	"crypto/internal/fips140deps/cpu"
	"crypto/internal/fips140deps/godebug"
	"crypto/internal/impl"
)

//go:noescape
func encryptBlockAsm(nr int, xk *uint32, dst, src *byte)

//go:noescape
func decryptBlockAsm(nr int, xk *uint32, dst, src *byte)

//go:noescape
func expandKeyAsm(nr int, key *byte, enc *uint32, dec *uint32)

var supportsAES = cpu.X86HasAES && cpu.X86HasSSE41 && cpu.X86Ha

... (truncated -- full source via MCP)