paypro: move x509 sign and verify to their own methods.

lib/PayPro.js

@@ -212,26 +212,7 @@ PayPro.prototype.sign = function(key) {
   if (pki_type === 'SIN') {
     var sig = this.sinSign(key);
   } else if (pki_type === 'x509+sha1' || pki_type === 'x509+sha256') {
-    var crypto = require('crypto');
-    var pki_data = this.get('pki_data'); // contains one or more x509 certs
-    var details = this.get('serialized_payment_details');
-    var type = pki_type.split('+')[1].toUpperCase();
-
-    var trusted = [].concat(pki_data).every(function(cert) {
-      var der = cert.toString('hex');
-      var pem = KJUR.asn1.ASN1Util.getPEMStringFromHex(der, 'CERTIFICATE');
-      // var pem = DERtoPEM(der, 'CERTIFICATE');
-      return !!RootCerts[pem.replace(/\s+/g, '')];
-    });
-
-    if (!trusted) {
-      // throw new Error('Unstrusted certificate.');
-    }
-
-    var signature = crypto.createSign('RSA-' + type);
-    var buf = this.serializeForSig();
-    signature.update(buf);
-    var sig = signature.sign(key);
+    var sig = this.x509Sign(key);
   } else if (pki_type === 'none') {
     return this;
   } else {
@@ -252,27 +233,7 @@ PayPro.prototype.verify = function() {
   if (pki_type === 'SIN') {
     return this.sinVerify();
   } else if (pki_type === 'x509+sha1' || pki_type === 'x509+sha256') {
-    var crypto = require('crypto');
-    var sig = this.get('signature');
-    var pki_data = this.get('pki_data');
-    var details = this.get('serialized_payment_details');
-    var buf = this.serializeForSig();
-    var type = pki_type.split('+')[1].toUpperCase();
-
-    var verifier = crypto.createVerify('RSA-' + type);
-    verifier.update(buf);
-
-    return [].concat(pki_data).every(function(cert) {
-      var der = cert.toString('hex');
-      var pem = KJUR.asn1.ASN1Util.getPEMStringFromHex(der, 'CERTIFICATE');
-      // var pem = DERtoPEM(der, 'CERTIFICATE');
-
-      if (!RootCerts[pem.replace(/\s+/g, '')]) {
-        // throw new Error('Unstrusted certificate.');
-      }
-
-      return verifier.verify(pem, sig);
-    });
+    return this.x509Verify();
   } else if (pki_type === 'none') {
     return true;
   }
@@ -280,6 +241,54 @@ PayPro.prototype.verify = function() {
   throw new Error('Unsupported pki_type');
 };
 
+PayPro.prototype.x509Sign = function(key) {
+  var crypto = require('crypto');
+  var pki_data = this.get('pki_data'); // contains one or more x509 certs
+  var details = this.get('serialized_payment_details');
+  var type = pki_type.split('+')[1].toUpperCase();
+
+  var trusted = [].concat(pki_data).every(function(cert) {
+    var der = cert.toString('hex');
+    var pem = KJUR.asn1.ASN1Util.getPEMStringFromHex(der, 'CERTIFICATE');
+    // var pem = DERtoPEM(der, 'CERTIFICATE');
+    return !!RootCerts[pem.replace(/\s+/g, '')];
+  });
+
+  if (!trusted) {
+    // throw new Error('Unstrusted certificate.');
+  }
+
+  var signature = crypto.createSign('RSA-' + type);
+  var buf = this.serializeForSig();
+  signature.update(buf);
+  var sig = signature.sign(key);
+  return sig;
+};
+
+PayPro.prototype.x509Verify = function() {
+  var crypto = require('crypto');
+  var sig = this.get('signature');
+  var pki_data = this.get('pki_data');
+  var details = this.get('serialized_payment_details');
+  var buf = this.serializeForSig();
+  var type = pki_type.split('+')[1].toUpperCase();
+
+  var verifier = crypto.createVerify('RSA-' + type);
+  verifier.update(buf);
+
+  return [].concat(pki_data).every(function(cert) {
+    var der = cert.toString('hex');
+    var pem = KJUR.asn1.ASN1Util.getPEMStringFromHex(der, 'CERTIFICATE');
+    // var pem = DERtoPEM(der, 'CERTIFICATE');
+
+    if (!RootCerts[pem.replace(/\s+/g, '')]) {
+      // throw new Error('Unstrusted certificate.');
+    }
+
+    return verifier.verify(pem, sig);
+  });
+};
+
 //default signing function for prototype.sign
 PayPro.prototype.sinSign = function(key) {
   this.set('pki_data', key.public)