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Name	Size	Permission
aes_gcm.go	5.72 KB	-rw-r--r--
aes_test.go	11.3 KB	-rw-r--r--
asm_amd64.s	5.4 KB	-rw-r--r--
asm_arm64.s	6.86 KB	-rw-r--r--
asm_ppc64le.s	20.17 KB	-rw-r--r--
asm_s390x.s	4.38 KB	-rw-r--r--
block.go	6.5 KB	-rw-r--r--
cbc_s390x.go	1.57 KB	-rw-r--r--
cipher.go	1.85 KB	-rw-r--r--
cipher_asm.go	2.32 KB	-rw-r--r--
cipher_generic.go	740 B	-rw-r--r--
cipher_ppc64le.go	2.07 KB	-rw-r--r--
cipher_s390x.go	2.6 KB	-rw-r--r--
const.go	29.32 KB	-rw-r--r--
ctr_s390x.go	2.44 KB	-rw-r--r--
gcm_amd64.s	23.42 KB	-rw-r--r--
gcm_arm64.s	21.52 KB	-rw-r--r--
gcm_ppc64le.go	6.7 KB	-rw-r--r--
gcm_ppc64le.s	12.78 KB	-rw-r--r--
gcm_s390x.go	11.35 KB	-rw-r--r--
modes.go	1.15 KB	-rw-r--r--
modes_test.go	3.48 KB	-rw-r--r--

Code Editor : cipher_ppc64le.go

// Copyright 2016 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.

package aes

import (
	"crypto/cipher"
	"crypto/internal/subtle"
)

// defined in asm_ppc64le.s

//go:noescape
func setEncryptKeyAsm(key *byte, keylen int, enc *uint32) int

//go:noescape
func setDecryptKeyAsm(key *byte, keylen int, dec *uint32) int

//go:noescape
func doEncryptKeyAsm(key *byte, keylen int, dec *uint32) int

//go:noescape
func encryptBlockAsm(dst, src *byte, enc *uint32)

//go:noescape
func decryptBlockAsm(dst, src *byte, dec *uint32)

type aesCipherAsm struct {
	aesCipher
}

func newCipher(key []byte) (cipher.Block, error) {
	n := 64 // size is fixed for all and round value is stored inside it too
	c := aesCipherAsm{aesCipher{make([]uint32, n), make([]uint32, n)}}
	k := len(key)

ret := 0
	ret += setEncryptKeyAsm(&key[0], k*8, &c.enc[0])
	ret += setDecryptKeyAsm(&key[0], k*8, &c.dec[0])

if ret > 0 {
		return nil, KeySizeError(k)
	}

return &c, nil
}

func (c *aesCipherAsm) BlockSize() int { return BlockSize }

func (c *aesCipherAsm) Encrypt(dst, src []byte) {
	if len(src) < BlockSize {
		panic("crypto/aes: input not full block")
	}
	if len(dst) < BlockSize {
		panic("crypto/aes: output not full block")
	}
	if subtle.InexactOverlap(dst[:BlockSize], src[:BlockSize]) {
		panic("crypto/aes: invalid buffer overlap")
	}
	encryptBlockAsm(&dst[0], &src[0], &c.enc[0])
}

func (c *aesCipherAsm) Decrypt(dst, src []byte) {
	if len(src) < BlockSize {
		panic("crypto/aes: input not full block")
	}
	if len(dst) < BlockSize {
		panic("crypto/aes: output not full block")
	}
	if subtle.InexactOverlap(dst[:BlockSize], src[:BlockSize]) {
		panic("crypto/aes: invalid buffer overlap")
	}
	decryptBlockAsm(&dst[0], &src[0], &c.dec[0])
}

// expandKey is used by BenchmarkExpand to ensure that the asm implementation
// of key expansion is used for the benchmark when it is available.
func expandKey(key []byte, enc, dec []uint32) {
	setEncryptKeyAsm(&key[0], len(key)*8, &enc[0])
	setDecryptKeyAsm(&key[0], len(key)*8, &dec[0])
}

${this.title}

Code Editor : cipher_ppc64le.go