Does Firebase use the keychain in iOS applications? - ios

Question

I have a function to check if my application has a password saved into keychain of the app when its is opened.
My function is added in my first ViewController and is this:
- (NSString *)tapGetButton{
NSDictionary *info = [[NSBundle mainBundle] infoDictionary];
NSString *version = [info objectForKey:#"CFBundleIdentifier"];
NSDictionary *query = #{
(__bridge id)kSecClass : (__bridge id)kSecClassGenericPassword,
(__bridge id)kSecAttrService: version,
(__bridge id)kSecReturnData : (__bridge id)kCFBooleanTrue,
(__bridge id)kSecMatchLimit : (__bridge id)kSecMatchLimitOne
};
CFDataRef token = nil;
// 検索
OSStatus err = SecItemCopyMatching((__bridge CFDictionaryRef)query,
(CFTypeRef *)&token);
NSString *accessToken = nil;
// success
if (err == errSecSuccess) {
NSLog(#"Success: get token");
}
// not found
else if (err == errSecItemNotFound) {
NSLog(#"NotFound: get token");
}
else {
NSLog(#"Error: get token");
}
return accessToken;
}
This funcitons works fine, I tested this and return correctly the password and username that I saved. But my problem appear when start the application then get this, and I find the problem. When I start the application, in the didFinishLaunchingWithOptions of the delegate is executed the init code to configure Firebase:
[FIRApp configure];
If I delete this code, the values from keychain is returned correctly, but if I add this code, the value returned is the number 1 or in other cases a long number...
Is Firebase using the keychain? There is other form of initialize Firebase?
Thanks!
EDIT: I'm not using Firebase to store the accounts or password, I'm using firebase to share events...

Answer 1

Firebase iOS SDK uses keychain a lot. You could inspect source code. For example here
I would recommend you to define your own service and account values to identify your data more precisely:
let query: [String: Any] = [
kSecClass as String: kSecClassGenericPassword,
kSecAttrAccount as String: "for example, token name",
kSecAttrService as String: "for example, token provider name",
]