Yes, the article is wrong, but ordinary developers shouldn't be using these low-level APIs anyway, unless they're implementing another, higher-level security pr

Yes, the article is wrong, but ordinary developers shouldn't be using these low-level APIs anyway, unless they're implementing another, higher-level security protocols (such as OpenPGP, PKCS#5, PKCS#1, SSL, or SSH). I'm not familiar with iOS. Does Apple's SDK provide implementations of any of these higher-level protocols?