Data encryption on PhoneGap applications?

Question

My company develops mobile apps that require encryption in their functionality for multiple platforms - iPhone, BlackBerry, J2ME, WinMobile, and probably Android in the near future. I've been trying to find ways to develop our apps such that all the app logic can be developed in a single code-base with a different UI wrapper for each platform, and PhoneGap seems like a promising solution.

What I want to ask is, would it be possible for an app developed in PhoneGap to use encryption like 3DES, AES, MD5, SHA256 etc? Since as far as I understand a PhoneGap app would be written with web dev technologies like Javascript/CSS, and I'm not too sure about the encryption functionalities they provide. (I'm more of an app developer than a web developer)

I thought of making my own helper classes to do this, but am not sure if those classes will be portable across all platforms. For example, if I make those classes using Java, will they be usable on an iPhone? And how?

Or if anybody knows of an even better way to do this, please share it. Thanks!

-Quinn

Answer 1

The major smartphone APIs are all very different from each other (iPhone: objC, Android: modern Java, Blackberry: old J2ME Java).

When you drop out of Phonegap to go native you'll almost certainly need code specific to each platform.