Encrypted iPhone Applications

2010-02-05 19:00:00 -0500


It was just over four months ago when we set about learning the iPhone SDK and putting together our first application, a revamp of STRIP, the personal information manager that was so popular for the Palm platform.

Now that we’ve got a mostly-finished product (we’re still making a few tweaks and getting ready to start the beta), we took a step back to look at the code we built to keep the development DRY and enable quick development of future applications. Essentially, we’ve built ourselves a framework for building applications that have a fully-encrypted database layer using SQLCipher, with a robust data model, a login facility, random password generation and seeding, etc.

What took us four months to do at first, now only takes us a few days. Using the code we extracted from STRIP we were able to put together one of our other app ideas in less than four work days. Introducing Codebook, a secure notepad:

Codebook is a LOT like the built-in Notes application on the iPhone. They aren’t exactly the same, but the critical difference is that no one is getting in and reading your notes unless they have your password:


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