iOS storing data in keychain for use across devices

Question

I am trying to write data to the iCloud Keychain and have it replicate across devices using the same Apple ID.

If I install an app and call the following code, write an entry, and tun read, I see the data being read back to log on the current device.

However, if I install the same code on another device using same Apple ID, with iCloud/keychain switched on, I don't see the data if I attempt to read from keychain on that device.

I have tried enabling icloud and keychain sharing in capabilities to no avail.

Could someone point me in the right direction please?

-(void)writekc{
    KeychainItemWrapper *keychainItem = [[KeychainItemWrapper alloc] initWithIdentifier:@"AppName" accessGroup:nil];
    [keychainItem setObject:@"password" forKey:(__bridge id)(kSecValueData)];
    [keychainItem setObject:@"username" forKey:(__bridge id)(kSecAttrAccount)];
}

-(void)readkc{
    KeychainItemWrapper *keychainItem = [[KeychainItemWrapper alloc] initWithIdentifier:@"AppName" accessGroup:nil];
    NSString *password = [keychainItem objectForKey:(__bridge id)(kSecValueData)];
    NSString *username = [keychainItem objectForKey:(__bridge id)(kSecAttrAccount)];
    NSLog(@"Password:%@, User:%@",password,username);
 }

You need to make sure that the wrapper code you are calling adds kSecAttrSynchronizable true to the dictionary passed to the secItem calls — Paulw11, Jun 02 '14 at 13:28
@Paulw11 I have just added [keychainItem setObject:(__bridge id)kCFBooleanTrue forKey:(__bridge id)(kSecAttrSynchronizable)]; to the write code above, but get an assertion error. — NeilMortonNet, Jun 02 '14 at 13:40

score 1 · Accepted Answer · answered Jun 04 '14 at 18:39

1

In the end I have used SSKeyChain which has sync capability built in.

answered Jun 04 '14 at 18:39

NeilMortonNet

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iOS storing data in keychain for use across devices

1 Answers1