PHP, Cryptography, Data Encoding

Closed - This job posting has been filled and work has been completed.

Job Description

I have a PHP key generator application that generate license keys with encrypted information stored in them. The problem is that it generate very long keys.

I need a PHP developer that understands cryptography to modify the application so that I can generate shorter keys (up to 50 characters) with the information stored.

The solution can be either with a new encryption method or a way to manipulate the data stored.