Android Apps Security

Chapter 5

Data Storage and Cryptography

We touched on cryptography very briefly in Chapter 4. This chapter will focus more on the importance of using cryptography to obfuscate and secure user data that you will either store or transport. First, we will cover the basics of cryptography and how they apply to us in the context of application development. Next, we will look at the various mechanisms of storing data on the Android platform. Along the way, I will give examples of how to store and retrieve data from different mechanisms and outline what function each store is ideally suited to perform.

One very important point to keep in mind is you should never attempt to write your own cryptographic routines unless you are familiar with cryptographic ...