From 2f970e1aa6e069a7f0001b23a4aadb54704c5d96 Mon Sep 17 00:00:00 2001
From: Jakob Unterwurzacher <jakobunt@gmail.com>
Date: Wed, 7 Oct 2015 22:05:32 +0200
Subject: [PATCH] Adapt openssl benchmark for 256 bit long keys

---
 openssl_benchmark/openssl_test.go | 23 ++++++++++-------------
 1 file changed, 10 insertions(+), 13 deletions(-)

diff --git a/openssl_benchmark/openssl_test.go b/openssl_benchmark/openssl_test.go
index 06dce03..a1e3d17 100644
--- a/openssl_benchmark/openssl_test.go
+++ b/openssl_benchmark/openssl_test.go
@@ -13,25 +13,22 @@ import (
 	"crypto/cipher"
 	"github.com/spacemonkeygo/openssl"
 	"testing"
+	"github.com/rfjakob/gocryptfs/cryptfs"
 )
 
 func TestMain(m *testing.M) {
 
-	fmt.Printf("Benchmarking AES-GCM-128 with 4kB block size\n")
+	fmt.Printf("Benchmarking AES-GCM-%d with 4kB block size\n", cryptfs.KEY_LEN*8)
 
 	r := m.Run()
 	os.Exit(r)
 }
 
-// This gets rid of the "testing: warning: no tests to run" message
-func TestDummy(t *testing.T) {
-}
-
 func BenchmarkGoEnc4K(b *testing.B) {
 	buf := make([]byte, 1024*4)
 	b.SetBytes(int64(len(buf)))
 
-	var key [16]byte
+	var key [cryptfs.KEY_LEN]byte
 	var nonce [12]byte
 	aes, _ := aes.NewCipher(key[:])
 	aesgcm, _ := cipher.NewGCM(aes)
@@ -47,7 +44,7 @@ func BenchmarkGoDec4K(b *testing.B) {
 	buf := make([]byte, 1024*4)
 	b.SetBytes(int64(len(buf)))
 
-	var key [16]byte
+	var key [cryptfs.KEY_LEN]byte
 	var nonce [12]byte
 	aes, _ := aes.NewCipher(key[:])
 	aesgcm, _ := cipher.NewGCM(aes)
@@ -67,7 +64,7 @@ func BenchmarkOpensslEnc4K(b *testing.B) {
 	buf := make([]byte, 1024*4)
 	b.SetBytes(int64(len(buf)))
 
-	var key [16]byte
+	var key [cryptfs.KEY_LEN]byte
 	var nonce [12]byte
 
 	var ciphertext bytes.Buffer
@@ -76,7 +73,7 @@ func BenchmarkOpensslEnc4K(b *testing.B) {
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
 		ciphertext.Reset()
-		ectx, err := openssl.NewGCMEncryptionCipherCtx(128, nil, key[:], nonce[:])
+		ectx, err := openssl.NewGCMEncryptionCipherCtx(cryptfs.KEY_LEN*8, nil, key[:], nonce[:])
 		if err != nil {
 			b.FailNow()
 		}
@@ -105,7 +102,7 @@ func BenchmarkOpensslDec4K(b *testing.B) {
 	tag := buf[4096:]
 	buf = buf[0:4096]
 
-	var key [16]byte
+	var key [cryptfs.KEY_LEN]byte
 	var nonce [12]byte
 
 	var plaintext bytes.Buffer
@@ -114,7 +111,7 @@ func BenchmarkOpensslDec4K(b *testing.B) {
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
 		plaintext.Reset()
-		dctx, err := openssl.NewGCMDecryptionCipherCtx(128, nil, key[:], nonce[:])
+		dctx, err := openssl.NewGCMDecryptionCipherCtx(cryptfs.KEY_LEN*8, nil, key[:], nonce[:])
 		if err != nil {
 			b.FailNow()
 		}
@@ -137,12 +134,12 @@ func BenchmarkOpensslDec4K(b *testing.B) {
 
 func makeOpensslCiphertext() []byte {
 	buf := make([]byte, 1024*4)
-	var key [16]byte
+	var key [cryptfs.KEY_LEN]byte
 	var nonce [12]byte
 	var ciphertext bytes.Buffer
 	var part []byte
 
-	ectx, _ := openssl.NewGCMEncryptionCipherCtx(128, nil, key[:], nonce[:])
+	ectx, _ := openssl.NewGCMEncryptionCipherCtx(cryptfs.KEY_LEN*8, nil, key[:], nonce[:])
 	part, _ = ectx.EncryptUpdate(buf)
 	ciphertext.Write(part)
 	part, _ = ectx.EncryptFinal()