Alright, I was using the keychain API provided by the Security.framework to store the passwords for the user accounts in my app. Unfortunately, the keychain API doesn’t integrate well when your app is distributed via Cydia, and resides in the /Applications directory because the login process appears to be broken.
I decided that I would just encrypt the the pin the user inputs into the pin text field, and store the pin as a hash in the Core Data database. I know this isn’t as secure as using the Keychain API, but I want to finish / release my app sometime this year. So I added the necessary objects to the necessary classes to be able to store the pin in the database. So my question is, why datatype should I use to store the password hash in the Core Data database. I assuming a String would be the necessary choice, but just wanted to confirm with the SO crowd.
Here’s a picture of what I am talking about,
Use the Core Data
NSString. Depending on what hash method you are wanting to use it will most likely be an alpha-numeric string.Binarywould be for pictures and stuff like that.