cbc_ppc64x.mx raw

   1  // Copyright 2021 The Go Authors. All rights reserved.
   2  // Use of this source code is governed by a BSD-style
   3  // license that can be found in the LICENSE file.
   4  
   5  //go:build (ppc64 || ppc64le) && !purego
   6  
   7  package aes
   8  
   9  // cryptBlocksChain invokes the cipher message identifying encrypt or decrypt.
  10  //
  11  //go:noescape
  12  func cryptBlocksChain(src, dst *byte, length int, key *uint32, iv *byte, enc int, nr int)
  13  
  14  const cbcEncrypt = 1
  15  const cbcDecrypt = 0
  16  
  17  func cryptBlocksEnc(b *Block, civ *[BlockSize]byte, dst, src []byte) {
  18  	if !supportsAES {
  19  		cryptBlocksEncGeneric(b, civ, dst, src)
  20  	} else {
  21  		cryptBlocksChain(&src[0], &dst[0], len(src), &b.enc[0], &civ[0], cbcEncrypt, b.rounds)
  22  	}
  23  }
  24  
  25  func cryptBlocksDec(b *Block, civ *[BlockSize]byte, dst, src []byte) {
  26  	if !supportsAES {
  27  		cryptBlocksDecGeneric(b, civ, dst, src)
  28  	} else {
  29  		cryptBlocksChain(&src[0], &dst[0], len(src), &b.dec[0], &civ[0], cbcDecrypt, b.rounds)
  30  	}
  31  }
  32