Keychain synchronizable and TouchID

[marbetschar]

I try to enable the keychain synchronization together with a Touch ID enabled login.
Unfortunately I receive the following error whenever I set .synchronizable(true):

OSStatus error:[-50] One or more parameters passed to a function were not valid.

error: Optional(Error Domain=com.kishikawakatsumi.KeychainAccess.error Code=-50 "One or more parameters passed to a function were not valid." UserInfo=0x7fb271d3e6b0 {NSLocalizedDescription=One or more parameters passed to a function were not valid.})

And thats the example code:

let keychain = Keychain(service: "my.service").synchronizable(true)
    keychain.remove("default.tenantid")

    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)) {
        let failable = keychain
            .authenticationPrompt("Please auth!")
            .getStringOrError("default.tenantid")

        if failable.succeeded {
            var tenantId: String? = failable.value

            if tenantId == nil{
                tenantId = NSUUID().UUIDString

                let error = keychain
                    .accessibility(.WhenPasscodeSetThisDeviceOnly, authenticationPolicy: .UserPresence)
                    .set(tenantId!, key: "default.tenantid")

                if error != nil {
                    println("error: \(error)")
                    // Error handling if needed...
                }
            }

            //logged in
            println(tenantId)

        } else {
            println("error: \(failable.error?.localizedDescription)")
            // Error handling if needed...
        }
    }

What's wrong?

[kishikawakatsumi]

synchronizable and Touch ID protection are incompatible, because ThisDeviceOnly means that cannot sync to another device.

[marbetschar]

Ok, thanks for the quick response!