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Optimize non-overlapping CFB8 decryption using SIMD XOR (#265)

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B站贴吧蜡油
2023-11-24 06:49:31 +08:00
committed by GitHub
parent 75da769c25
commit bc3d77d784
6 changed files with 103 additions and 41 deletions
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60
net/CFB8/cfb8_test.go
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@ -3,6 +3,7 @@ package CFB8
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"crypto/rand"
"encoding/hex"
"testing"
@ -150,14 +151,8 @@ func TestCFB8VectorsOverlapped(t *testing.T) {
}
}
func BenchmarkCFB8AES1KOverlapped(b *testing.B) {
var key [16]byte
var iv [16]byte
rand.Read(key[:])
rand.Read(iv[:])
func benchmarkStreamOverlapped(b *testing.B, stream cipher.Stream) {
buf := make([]byte, 1024)
aes, _ := aes.NewCipher(key[:])
stream := NewCFB8Encrypt(aes, iv[:])
b.SetBytes(int64(len(buf)))
b.ReportAllocs()
@ -167,15 +162,9 @@ func BenchmarkCFB8AES1KOverlapped(b *testing.B) {
}
}
func BenchmarkCFB8AES1KNonOverlapping(b *testing.B) {
var key [16]byte
var iv [16]byte
rand.Read(key[:])
rand.Read(iv[:])
func benchmarkStreamNonOverlapping(b *testing.B, stream cipher.Stream) {
buf := make([]byte, 1024)
buf2 := make([]byte, 1024)
aes, _ := aes.NewCipher(key[:])
stream := NewCFB8Encrypt(aes, iv[:])
b.SetBytes(int64(len(buf)))
b.ReportAllocs()
@ -184,3 +173,46 @@ func BenchmarkCFB8AES1KNonOverlapping(b *testing.B) {
stream.XORKeyStream(buf2, buf)
}
}
func BenchmarkCFB8AES1KEncryptOverlapped(b *testing.B) {
var key [16]byte
var iv [16]byte
rand.Read(key[:])
rand.Read(iv[:])
aes, _ := aes.NewCipher(key[:])
stream := NewCFB8Encrypt(aes, iv[:])
benchmarkStreamOverlapped(b, stream)
}
func BenchmarkCFB8AES1KEncryptNonOverlapping(b *testing.B) {
var key [16]byte
var iv [16]byte
rand.Read(key[:])
rand.Read(iv[:])
aes, _ := aes.NewCipher(key[:])
stream := NewCFB8Encrypt(aes, iv[:])
benchmarkStreamNonOverlapping(b, stream)
}
func BenchmarkCFB8AES1KDecryptOverlapped(b *testing.B) {
var key [16]byte
var iv [16]byte
rand.Read(key[:])
rand.Read(iv[:])
aes, _ := aes.NewCipher(key[:])
stream := NewCFB8Decrypt(aes, iv[:])
benchmarkStreamOverlapped(b, stream)
}
func BenchmarkCFB8AES1KDecryptNonOverlapping(b *testing.B) {
var key [16]byte
var iv [16]byte
rand.Read(key[:])
rand.Read(iv[:])
aes, _ := aes.NewCipher(key[:])
stream := NewCFB8Decrypt(aes, iv[:])
benchmarkStreamNonOverlapping(b, stream)
}