Question

I’m looking for ways to encrypt and decrypt NSStrings with a user defined keyword in Objective-C. I found this in a different Stack Overflow post:AES256 in objective-c.

How can one go about using these methods, I’m fairly new to Objective-C programming. How can I do this? Are there any tutorials on this?

Thanks in advance!

Answer 1

This is a category on NSData– it adds AES256EncryptWithKey: and AES256DecryptWithKey: to the methods supported by NSData.

So, to encrypt a string, you would first convert your string into an NSData object (using dataUsingEncoding: on the string), then call AES256EncryptWithKey on the NSData object you get from dataUsingEncoding.