Using SSkeychain to store access tokens

Question

I'm trying to figure out how to use the SSkeychain in order to store access tokens for the instagram api. I'm currently using NSUserDefault class but I dont think thats the best of ideas.

Does the SSkeychain class itself need to be allocated and initialized in order to be used as well?

Answer 1

SSKeychain just provides class methods, so you don't need to initialize an instance. It does require some setup, though. The readme is a great source of information on this.

Here's a code example to help:

// Specify how the keychain items can be access
// Do this in your -application:didFinishLaunchingWithOptions: callback
[SSKeychain setAccessibilityType:kSecAttrAccessibleWhenUnlocked];

// Set an access token for later use
[SSKeychain setPassword:instagramToken forService:@"InstagramService" account:@"com.yourapp.keychain"];

// Access that token when needed
[SSKeychain passwordForService:@"InstagramService" account:@"com.yourapp.keychain"];

// Delete the token when appropriate (on sign out, perhaps)
[SSKeychain deletePasswordForService:@"InstagramService" account:@"com.yourapp.keychain"];

I'd also recommend making those @"InstagramService" and @"com.yourapp.keychain" strings constants so it's easier to reference them.

Hope that helps!