From 1f99eff9e31fc65534d700858952f0dad68062d2 Mon Sep 17 00:00:00 2001
From: Felix Lange <fjl@twurst.com>
Date: Fri, 8 Dec 2017 16:04:00 +0100
Subject: [PATCH] crypto: add test for valid signature + invalid pubkey

---
 crypto/signature_test.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/crypto/signature_test.go b/crypto/signature_test.go
index 2e67f6f76f..5e2efc7e05 100644
--- a/crypto/signature_test.go
+++ b/crypto/signature_test.go
@@ -68,6 +68,11 @@ func TestVerifySignature(t *testing.T) {
 	if VerifySignature(testpubkey, testmsg, sig[:len(sig)-2]) {
 		t.Errorf("signature valid even though it's incomplete")
 	}
+	wrongkey := common.CopyBytes(testpubkey)
+	wrongkey[10]++
+	if VerifySignature(wrongkey, testmsg, sig) {
+		t.Errorf("signature valid with with wrong public key")
+	}
 }
 
 func TestDecompressPubkey(t *testing.T) {