pbkdf2 deprecation warning when calling application.getApiKey()

[typerandom]

When using Node v6.5.0 and calling application.getApiKey(...) the following deprecation warning is written to console:

(node:29446) DeprecationWarning: crypto.pbkdf2 without specifying a digest is deprecated. Please specify a digest

How to reproduce

1. Use Node version v6.5.0.

2. Run the application below:

   var stormpath = require('stormpath');
   
   var client = new stormpath.Client();
   
   var applicationHref = 'https://api.stormpath.com/v1/applications/YOUR_APP_HREF';
   var apiKeyId = 'YOUR_ACCOUNT_API_KEY_ID';
   
   client.getApplication(applicationHref, function (err, application) {
       if (err) {
           return console.error(err);
       }
   
       application.getApiKey(apiKeyId, function (err, apiKey) {
           if (err) {
               return console.error(err);
           }
   
           console.log('Application retrieved! Deprecation warning should be written before this.');
       });
   });

3. Check the console for the following deprecation warning:

   (node:29446) DeprecationWarning: crypto.pbkdf2 without specifying a digest is deprecated. Please specify a digest
   

[shikloshi]

+1