rails function to check license against remote server

I need few lines of code that will check a license using a 3 step authentication process. We have three licensing information: 1. licenseID 2. licenseKey 3. licenseSerial First step -- submit licenseID to remote to http://licensingserver/license/check/$licenseID Remote will answer with these values a) if licenseID is correct, it will answer: {"status":"success","message":"","howdy":'WHATEVERSTRING' } b) if licenseID is incorrect, it will answer: {"status":"error" } Second step - $licenseKey2 = crypt(licenseKey,$howdy ) , submit to remote http://licensingserver/license/check2/$licenseKey2/$licenseID Remote will answer with these values : a) if licenseKey2 had the right value , success will return {"status":"success","message":"","howdy":"WHATEVERSTRING","licenseSalt":"WHATEVERSTRING" } b) if licenseKey2 had the wrong value,it will return: {"status":"error"} Third step: if on previous step we had status success, do this third check if ($crypt_salt != crypt(licenseKey,licenseSalt) { die () } else { ....success.... } I would need this done in Ruby on Rails.