I’m developing an iPhone application.
The application access some web service that aboug other things should recognize the device ID.
Since UDID is deprecated, I need to call CFUUIDCreate to generate my own UUID for this purpose.
The ID is security-sensitive: all my network communication is encrypted, and I don’t want nobody but my certificate-authenticated server to know that UUID.
Besides, I want this identifier to survive re-install.
Using the keychain to store that UUID seems like an obvious solution.
How do I do that?
On the internets, there’re some samples how to store user name & password in keychain. I have neither user nor password, just 16 bytes UUID (or a single NSString).
Which kSecClass do I need to use?
Which attributes do I need to set and retrieve?
Which attributes are optional and which are mandatory?
What header/framework defines the CSSM_ALGORITHMS?
The doc mentions cssmtype.h, xcode autocompletion has <Security/cssmtype.h> however the xcode compiler says “file not found”.
From the common sense, “Identity” should fit best. The docs however say “an identity is the combination of a private key and a certificate”, I have neither of them. Also, I don’t see the “key bytes” attribute.
Thanks in advance!
You could use the SSKeychain wrapper. Also check out the answer on this question for some basic usage stuff:
How to choose account and service values for SSKeychain