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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.xor_key_stream(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.crypt_blocks(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.crypt_blocks(buf, buf)
// }
// }