I’m writing an email address and pass to be stored in a .db file, but it can easily be stolen by just reading it. How can I encrypt it without being easily decrypted by an outside source? I also need to be able to decrypt it for the program.

Can I use Java’s Security/Crypto API or do I have to create my own encryption method? And how can I make sure that someone can’t just decompile my .class file and read the algorithm?

Thanks a bunch, giving out best answer,
SOLVED, PLEASE ANSWER MY NEW ENCRYPTION QUESTION: http://answers.yahoo.com/question/index?qid=20110221154027AAbXZoP

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