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package cryptfs
// Benchmark go built-int GCM against spacemonkey openssl bindings
//
// Note: The benchmarks in this file supersede the ones in the openssl_benchmark
// directory as they use the same code paths that gocryptfs actually uses.
//
// Run benchmark:
// go test -bench Enc
import (
"crypto/aes"
"crypto/cipher"
"testing"
)
func benchmarkGoEnc(b *testing.B, plaintext []byte, key []byte, nonce []byte) (ciphertext []byte) {
b.SetBytes(int64(len(plaintext)))
aes, err := aes.NewCipher(key[:])
if err != nil {
b.Fatal(err)
}
aesgcm, err := cipher.NewGCMWithNonceSize(aes, len(nonce))
if err != nil {
b.Fatal(err)
}
// This would be fileID + blockNo
aData := make([]byte, 24)
b.ResetTimer()
for i := 0; i < b.N; i++ {
// Encrypt plaintext and append to nonce
ciphertext = aesgcm.Seal(nonce, nonce, plaintext, aData)
}
return ciphertext
}
func benchmarkOpensslEnc(b *testing.B, plaintext []byte, key []byte, nonce []byte) (ciphertext []byte) {
b.SetBytes(int64(len(plaintext)))
var aesgcm opensslGCM
aesgcm.key = key
// This would be fileID + blockNo
aData := make([]byte, 24)
for i := 0; i < b.N; i++ {
// Encrypt plaintext and append to nonce
ciphertext = aesgcm.Seal(nonce, nonce, plaintext, aData)
}
return ciphertext
}
func BenchmarkEnc_Go_4k_AES256_nonce96(b *testing.B) {
plaintext := make([]byte, 4048)
key := make([]byte, 256/8)
nonce := make([]byte, 96/8)
benchmarkGoEnc(b, plaintext, key, nonce)
}
func BenchmarkEnc_Go_4k_AES256_nonce128(b *testing.B) {
plaintext := make([]byte, 4048)
key := make([]byte, 256/8)
nonce := make([]byte, 128/8)
benchmarkGoEnc(b, plaintext, key, nonce)
}
func BenchmarkEnc_OpenSSL_4k_AES256_nonce96(b *testing.B) {
plaintext := make([]byte, 4048)
key := make([]byte, 256/8)
nonce := make([]byte, 96/8)
benchmarkOpensslEnc(b, plaintext, key, nonce)
}
func BenchmarkEnc_OpenSSL_4k_AES256_nonce128(b *testing.B) {
plaintext := make([]byte, 4048)
key := make([]byte, 256/8)
nonce := make([]byte, 96/8)
benchmarkOpensslEnc(b, plaintext, key, nonce)
}
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