diff --git a/lib/PayPro.js b/lib/PayPro.js
index 2588e6d..7dac0b5 100644
--- a/lib/PayPro.js
+++ b/lib/PayPro.js
@@ -93,13 +93,65 @@ PayPro.prototype.x509Verify = function() {
     var data = new Buffer(nder, 'hex');
     var nc = rfc3280.Certificate.decode(data, 'der');
     var npubKey = nc.tbsCertificate.subjectPublicKeyInfo.subjectPublicKey.data;
-    npubKey = self._DERtoPEM(npubKey, 'RSA PUBLIC KEY');
+    npubKey = npubKey.toString('hex');
+    //npubKey = self._DERtoPEM(npubKey, 'RSA PUBLIC KEY');
 
     // Get signature from current certificate:
     var data = new Buffer(der, 'hex');
     var c = rfc3280.Certificate.decode(data, 'der');
     var sig = c.signature.data;
 
+
+    var jsrsaSig = new KJUR.crypto.Signature({
+      alg: type + 'withRSA',
+      prov: 'cryptojs/jsrsa'
+    });
+    //var key = new KJUR.RSAKey();
+    //key.readPublicKeyFromPEMString(npubKey);
+    //jsrsaSig.initVerifyByPublicKey(_npubKey.toString('hex'));
+    // http://kjur.github.io/jsrsasign/api/symbols/KJUR.crypto.Signature.html
+    // http://kjur.github.io/jsrsasign/api/symbols/RSAKey.html
+
+    // KEYUTIL:
+    // getKeyFromPublicPKCS8Hex
+    // getKeyFromPublicPKCS8PEM
+    // getKeyFromCSRPEM
+    // getKeyFromCSRHex
+    // getKey
+    // getHexFromPEM(sPEM, sHead)
+    // getKeyFromEncryptedPKCS8PEM(pkcs8PEM, passcode)
+    // getKeyFromPublicPKCS8Hex(pkcsPub8Hex)
+    // getKeyFromPublicPKCS8PEM(pkcsPub8PEM)
+    // getPEM(keyObjOrHex, formatType, passwd, encAlg)
+    // getRSAKeyFromPublicPKCS8PEM(pkcs8PubPEM)
+    // getKeyFromPublicPKCS8Hex(pkcsPub8Hex)
+
+    // http://kjur.github.io/jsrsasign/api/symbols/KEYUTIL
+    // var key = KJUR.KEYUTIL.getRSAKeyFromPublicPKCS8PEM(npubKey);
+    // var key = KJUR.KEYUTIL.getHexFromPEM(npubKey, 'RSA PUBLIC KEY');
+    // var key = KJUR.KEYUTIL.getKeyFromPublicPKCS8PEM(npubKey);
+    // var key = KJUR.KEYUTIL.getKey(npubKey, null, 'der');
+    // var key = KJUR.KEYUTIL.getKeyFromCSRHex(npubKey);
+    // var key = KJUR.KEYUTIL.getKeyFromPublicPKCS8Hex(npubKey);
+    // var key = KJUR.KEYUTIL.getRSAKeyFromPlainPKCS8Hex(npubKey);
+    // var key = KJUR.KEYUTIL.getRSAKeyFromPublicPKCS8Hex(npubKey);
+    // var key = KJUR.KEYUTIL.parsePublicPKCS8Hex(npubKey);
+
+    // var key = KJUR.KEYUTIL.parsePublicRawRSAKeyHex(npubKey);
+    // key = KJUR.KEYUTIL.getKey(key);
+
+    jsrsaSig.initVerifyByPublicKey(key);
+
+    // Create a To-Be-Signed Certificate to verify using asn1.js:
+    // Fails at Issuer:
+    var tbs = rfc3280.TBSCertificate.encode(c.tbsCertificate, 'der');
+    jsrsaSig.updateHex(tbs.toString('hex'));
+
+    return jsrsaSig.verify(sig);
+
+
+
+
     var verifier = crypto.createVerify('RSA-' + type);
 
     // Create a To-Be-Signed Certificate to verify using asn1.js: