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Viewing changes to src/pkg/crypto/aes/cipher_asm.go

  • Committer: Package Import Robot
  • Author(s): Adam Conrad
  • Date: 2013-07-08 05:52:37 UTC
  • mfrom: (29.1.1 sid)
  • Revision ID: package-import@ubuntu.com-20130708055237-at01839e0hp8z3ni
Tags: 2:1.1-1ubuntu1
016-armhf-elf-header.patch: Use correct ELF header for armhf binaries.

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src/pkg/crypto/aes/cipher_asm.go
 
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// Copyright 2012 The Go Authors. All rights reserved.
 
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// Use of this source code is governed by a BSD-style
 
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// license that can be found in the LICENSE file.
 
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// +build amd64
 
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package aes
 
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// defined in asm_$GOARCH.s
 
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func hasAsm() bool
 
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func encryptBlockAsm(nr int, xk *uint32, dst, src *byte)
 
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func decryptBlockAsm(nr int, xk *uint32, dst, src *byte)
 
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func expandKeyAsm(nr int, key *byte, enc *uint32, dec *uint32)
 
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var useAsm = hasAsm()
 
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func encryptBlock(xk []uint32, dst, src []byte) {
 
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        if useAsm {
 
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                encryptBlockAsm(len(xk)/4-1, &xk[0], &dst[0], &src[0])
 
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        } else {
 
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                encryptBlockGo(xk, dst, src)
 
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        }
 
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}
 
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func decryptBlock(xk []uint32, dst, src []byte) {
 
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        if useAsm {
 
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                decryptBlockAsm(len(xk)/4-1, &xk[0], &dst[0], &src[0])
 
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        } else {
 
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                decryptBlockGo(xk, dst, src)
 
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        }
 
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}
 
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func expandKey(key []byte, enc, dec []uint32) {
 
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        if useAsm {
 
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                rounds := 10
 
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                switch len(key) {
 
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                case 128 / 8:
 
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                        rounds = 10
 
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                case 192 / 8:
 
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                        rounds = 12
 
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                case 256 / 8:
 
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                        rounds = 14
 
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                }
 
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                expandKeyAsm(rounds, &key[0], &enc[0], &dec[0])
 
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        } else {
 
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                expandKeyGo(key, enc, dec)
 
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        }
 
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}