From af6885db81d0c5e516be0531b9089c6174978685 Mon Sep 17 00:00:00 2001
From: Remco Bloemen <remco@wicked.ventures>
Date: Wed, 21 Feb 2018 15:15:28 -0800
Subject: Make first value illegal

---
 .../current/protocol/Exchange/MixinSignatureValidator.sol      | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

(limited to 'packages/contracts')

diff --git a/packages/contracts/src/contracts/current/protocol/Exchange/MixinSignatureValidator.sol b/packages/contracts/src/contracts/current/protocol/Exchange/MixinSignatureValidator.sol
index e243eade1..1e072f001 100644
--- a/packages/contracts/src/contracts/current/protocol/Exchange/MixinSignatureValidator.sol
+++ b/packages/contracts/src/contracts/current/protocol/Exchange/MixinSignatureValidator.sol
@@ -26,7 +26,7 @@ contract MixinSignatureValidator is
     MSignatureValidator
 {
     enum SignatureType {
-        Invalid,
+        Illegal, // Default value
         Caller,
         Ecrecover,
         EIP712,
@@ -50,11 +50,9 @@ contract MixinSignatureValidator is
         bytes32 r;
         bytes32 s;
         
-        // Zero is always an invalid signature
-        if (signatureType == SignatureType.Invalid) {
-            require(signature.length == 1);
-            isValid = false;
-            return;
+        // Always illegal signature
+        if (signatureType == SignatureType.Illegal) {
+            revert();
         
         // Implicitly signed by caller
         } else if (signatureType == SignatureType.Caller) {
-- 
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