style: avoid using var shorthands for UglifyJS's sake

Author: FlavioMartinho

lib/algorithms/ecdsa.js

@@ -227,7 +227,7 @@ function ecdsaVerifyFN(hash) {
         }
         return {
           data: pdata,
-          mac,
+          mac: mac,
           valid: true
         };
       });

lib/algorithms/rsaes.js

@@ -91,7 +91,7 @@ function rsaesEncryptFn(name) {
       key = rsaUtil.convertToPem(key, true);
 
       var cdata = helpers.nodeCrypto.publicEncrypt({
-        key,
+        key: key,
         padding: helpers.nodeCrypto.constants[nodeSupport[name]]
       }, pdata);
 
@@ -168,7 +168,7 @@ function rsaesDecryptFn(name) {
     nodejs = function(key, pdata) {
       key = rsaUtil.convertToPem(key, false);
       return helpers.nodeCrypto.privateDecrypt({
-        key,
+        key: key,
         padding: helpers.nodeCrypto.constants[nodeSupport[name]]
       }, pdata);
     };