diff --git a/lib/PayPro.js b/lib/PayPro.js
index 1e2fed5..7b02aa0 100644
--- a/lib/PayPro.js
+++ b/lib/PayPro.js
@@ -213,6 +213,20 @@ PayPro.prototype.x509Verify = function() {
       print(extensions.authorityKeyIdentifier);
     }
 
+    // if (extensions.subjectKeyIdentifier) {
+    //   extensions.subjectKeyIdentifier = rfc5280.SubjectKeyIdentifier.decode(
+    //     extensions.subjectKeyIdentifier,
+    //     'der');
+    //   print(extensions.subjectKeyIdentifier);
+    // }
+
+    if (extensions.keyUsage) {
+      extensions.keyUsage = rfc5280.KeyUsage.decode(
+        extensions.keyUsage,
+        'der');
+      print(extensions.keyUsage);
+    }
+
     //
     // Verify current certificate signature
     //
@@ -246,6 +260,7 @@ PayPro.prototype.x509Verify = function() {
  */
 
 var rfc5280 = {};
+
 rfc5280.AuthorityKeyIdentifier = asn1.define('AuthorityKeyIdentifier', function() {
   this.seq().obj(
     this.key('keyIdentifier').optional().octstr(),
@@ -254,6 +269,32 @@ rfc5280.AuthorityKeyIdentifier = asn1.define('AuthorityKeyIdentifier', function(
   );
 });
 
+// rfc5280.SubjectKeyIdentifier = asn1.define('SubjectKeyIdentifier', function() {
+//   this.seq().obj(
+//     this.key('keyIdentifier').optional().octstr(),
+//     this.key('authorityCertIssuer').optional().octstr(),
+//     this.key('authorityCertSerialNumber').optional().octstr()
+//   );
+// });
+
+rfc5280.KeyUsage = asn1.define('KeyUsage', function() {
+  this.bitstr();
+});
+
+rfc5280.KeyUsage = asn1.define('KeyUsage', function() {
+  this.seq().obj(
+    this.key('digitalSignature').bitstr(),
+    this.key('nonRepudiation').bitstr(),
+    this.key('keyEncipherment').bitstr(),
+    this.key('dataEncipherment').bitstr(),
+    this.key('keyAgreement').bitstr(),
+    this.key('keyCertSign').bitstr(),
+    this.key('cRLSign').bitstr(),
+    this.key('encipherOnly').bitstr(),
+    this.key('decipherOnly').bitstr()
+  );
+});
+
 /**
  * Debug
  */