diff --git a/lib/common/Key.js b/lib/common/Key.js
index 160d030..f13ad91 100644
--- a/lib/common/Key.js
+++ b/lib/common/Key.js
@@ -159,7 +159,8 @@ Key.calcPubKeyRecoveryParam = function(e, r, s, Q) {
 
 Key.genk = function() {
   //TODO: account for when >= n
-  return new bignum(SecureRandom.getRandomBuffer(8));
+  var k = new bignum(SecureRandom.getRandomBuffer(32))
+  return k;
 };
 
 module.exports = Key;