diff --git a/lib/server/auth.js b/lib/server/auth.js
index da052d51..c2dd9065 100644
--- a/lib/server/auth.js
+++ b/lib/server/auth.js
@@ -32,11 +32,11 @@
         var auth   = httpAuth.basic({
             realm: 'Cloud Commander'
         }, function (username, password, callback) {
-            var hash,
+            var hash, sha,
                 name    = config('username'),
                 pass    = config('password'),
                 equal   = username === name,
-                sha     = crypto.createHash('sha512WithRSAEncryption');
+                algo    = 'sha512WithRSAEncryption';
             
             if (!oldPass)
                 oldPass = pass;
@@ -47,13 +47,14 @@
             if (!equal)
                 username === oldName;
             
+            sha         = crypto.createHash(algo);
             sha.update(password);
             
             hash        = sha.digest('hex');
             equal       = pass === hash && equal;
             
             if (!equal) {
-                 sha    = crypto.createHash('sha512WithRSAEncryption');
+                 sha    = crypto.createHash(algo);
                  sha.update(oldPass);
                  hash   = sha.digest('hex');
                  equal  = pass === hash && equal;