Saving credentials to iOS Keychain

keychainsave

// store user/pass to the keychain
KeychainItemWrapper *wrapper = [[KeychainItemWrapper alloc] initWithIdentifier:@"SomeCustomIdentifier" accessGroup:nil];
[wrapper setObject:APP_NAME forKey:(__bridge id)kSecAttrService];
[wrapper setObject:(__bridge id)kSecAttrAccessibleAlways forKey:(__bridge id)kSecAttrAccessible];
[wrapper setObject:email forKey:(__bridge id)kSecAttrAccount];
[wrapper setObject:token forKey:(__bridge id)kSecValueData];