On Jun 6, 2012, at 9:51 AM, Charlie Dickman wrote: > Can someone direct me to some documentation on how to do data encryption in > Cocoa/Objective C/C?
That's a pretty broad question! What type of encryption — symmetric or asymmetric (aka public key)? Any particular algorithm? Are you implementing the decryption as well or is that done by an existing implementation? How is the data going to be stored/transmitted and what strength of security do you need? Maybe it's best if you describe at a high level what you need to accomplish. I could point you to documentation, but you're not going to like it :/ In general this is in the Security framework, although some stuff is in CommonCrypto. The APIs are complicated, badly designed, and have changed over time; and the documentation is quite inadequate. I have found this to be the single most frustrating area to work on in Mac OS or (especially) iOS, worse even than audio. Be warned: Here Be Dragons. I do have a framework called MYCrypto* I wrote a few years ago that tries to put a friendly face on this stuff. It's still useable, but in 10.7 Apple decided to suddenly deprecate the standard APIs I was using in favor of newer APIs that I still haven't completely figured out :-p so MYCrypto needs either the 10.6 SDK or deprecation warnings disabled. Also, if you are going to do anything serious with security (i.e. anything that people other than you are going to rely on), you really need to learn some fundamentals. I highly recommend the book "Practical Cryptography" by Fergusen & Schneier. It's very easy to get things wrong if you don't know what you're doing, and unlike typical bugs that will be triggered or not by random chance, with security you have very smart and motivated people actively trying to find and exploit your bugs. —Jens * https://github.com/snej/MYCrypto _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
