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// Copyright 2013 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 cipher_test
import (
"crypto/aes"
"crypto/cipher"
"strconv"
"testing"
)
func benchmarkAESGCMSeal(b *testing.B, buf []byte, keySize int) {
b.ReportAllocs()
b.SetBytes(int64(len(buf)))
var key = make([]byte, keySize)
var nonce [12]byte
var ad [13]byte
aes, _ := aes.NewCipher(key[:])
aesgcm, _ := cipher.NewGCM(aes)
var out []byte
b.ResetTimer()
for i := 0; i < b.N; i++ {
out = aesgcm.Seal(out[:0], nonce[:], buf, ad[:])
}
}
func benchmarkAESGCMOpen(b *testing.B, buf []byte, keySize int) {
b.ReportAllocs()
b.SetBytes(int64(len(buf)))
var key = make([]byte, keySize)
var nonce [12]byte
var ad [13]byte
aes, _ := aes.NewCipher(key[:])
aesgcm, _ := cipher.NewGCM(aes)
var out []byte
ct := aesgcm.Seal(nil, nonce[:], buf[:], ad[:])
b.ResetTimer()
for i := 0; i < b.N; i++ {
out, _ = aesgcm.Open(out[:0], nonce[:], ct, ad[:])
}
}
func BenchmarkAESGCM(b *testing.B) {
for _, length := range []int{64, 1350, 8 * 1024} {
b.Run("Open-128-"+strconv.Itoa(length), func(b *testing.B) {
benchmarkAESGCMOpen(b, make([]byte, length), 128/8)
})
b.Run("Seal-128-"+strconv.Itoa(length), func(b *testing.B) {
benchmarkAESGCMSeal(b, make([]byte, length), 128/8)
})
b.Run("Open-256-"+strconv.Itoa(length), func(b *testing.B) {
benchmarkAESGCMOpen(b, make([]byte, length), 256/8)
})
b.Run("Seal-256-"+strconv.Itoa(length), func(b *testing.B) {
benchmarkAESGCMSeal(b, make([]byte, length), 256/8)
})
}
}
func benchmarkAESStream(b *testing.B, mode func(cipher.Block, []byte) cipher.Stream, buf []byte) {
b.SetBytes(int64(len(buf)))
var key [16]byte
var iv [16]byte
aes, _ := aes.NewCipher(key[:])
stream := mode(aes, iv[:])
b.ResetTimer()
for i := 0; i < b.N; i++ {
stream.XORKeyStream(buf, buf)
}
}
// If we test exactly 1K blocks, we would generate exact multiples of
// the cipher's block size, and the cipher stream fragments would
// always be wordsize aligned, whereas non-aligned is a more typical
// use-case.
const almost1K = 1024 - 5
const almost8K = 8*1024 - 5
func BenchmarkAESCFBEncrypt1K(b *testing.B) {
benchmarkAESStream(b, cipher.NewCFBEncrypter, make([]byte, almost1K))
}
func BenchmarkAESCFBDecrypt1K(b *testing.B) {
benchmarkAESStream(b, cipher.NewCFBDecrypter, make([]byte, almost1K))
}
func BenchmarkAESCFBDecrypt8K(b *testing.B) {
benchmarkAESStream(b, cipher.NewCFBDecrypter, make([]byte, almost8K))
}
func BenchmarkAESOFB1K(b *testing.B) {
benchmarkAESStream(b, cipher.NewOFB, make([]byte, almost1K))
}
func BenchmarkAESCTR1K(b *testing.B) {
benchmarkAESStream(b, cipher.NewCTR, make([]byte, almost1K))
}
func BenchmarkAESCTR8K(b *testing.B) {
benchmarkAESStream(b, cipher.NewCTR, make([]byte, almost8K))
}
func BenchmarkAESCBCEncrypt1K(b *testing.B) {
buf := make([]byte, 1024)
b.SetBytes(int64(len(buf)))
var key [16]byte
var iv [16]byte
aes, _ := aes.NewCipher(key[:])
cbc := cipher.NewCBCEncrypter(aes, iv[:])
for i := 0; i < b.N; i++ {
cbc.CryptBlocks(buf, buf)
}
}
func BenchmarkAESCBCDecrypt1K(b *testing.B) {
buf := make([]byte, 1024)
b.SetBytes(int64(len(buf)))
var key [16]byte
var iv [16]byte
aes, _ := aes.NewCipher(key[:])
cbc := cipher.NewCBCDecrypter(aes, iv[:])
for i := 0; i < b.N; i++ {
cbc.CryptBlocks(buf, buf)
}
}