From 0e277ba19e3a18093c33d3927739031b76892de3 Mon Sep 17 00:00:00 2001
From: Jakob Unterwurzacher
Date: Sun, 25 Sep 2016 20:04:33 +0200
Subject: stupidgcm: add GCM-SIV benchmark

On a CPU without AES-NI:

$ go test -bench .
Benchmark4kEncStupidGCM-2   	   50000	     24155 ns/op	 169.57 MB/s
Benchmark4kEncGoGCM-2       	   20000	     93965 ns/op	  43.59 MB/s
Benchmark4kEncGCMSIV-2      	     500	   2576193 ns/op	   1.59 MB/s
---
 internal/stupidgcm/stupidgcm_test.go | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/internal/stupidgcm/stupidgcm_test.go b/internal/stupidgcm/stupidgcm_test.go
index b0e25ab..1dbfccb 100644
--- a/internal/stupidgcm/stupidgcm_test.go
+++ b/internal/stupidgcm/stupidgcm_test.go
@@ -14,6 +14,8 @@ import (
 	"crypto/rand"
 	"encoding/hex"
 	"testing"
+
+	"github.com/rfjakob/gcmsiv"
 )
 
 // Get "n" random bytes from /dev/urandom or panic
@@ -159,3 +161,19 @@ func Benchmark4kEncGoGCM(b *testing.B) {
 		gGCM.Seal(iv, iv, in, authData)
 	}
 }
+
+func Benchmark4kEncGCMSIV(b *testing.B) {
+	key := randBytes(32)
+	authData := randBytes(24)
+	iv := randBytes(16)
+	in := make([]byte, 4096)
+	b.SetBytes(int64(len(in)))
+	gGCM, err := gcmsiv.NewGCMSIV(key)
+	if err != nil {
+		b.Fatal(err)
+	}
+	for i := 0; i < b.N; i++ {
+		// Encrypt and append to nonce
+		gGCM.Seal(iv, iv, in, authData)
+	}
+}
-- 
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