SecRequestSharedWebCredential(nil, nil){ credentials, error in
        guard let credentials = credentials else { print("Keychain: No credentials found"); return }
        guard error == nil else { print("Keychain Error:", error?.localizedDescription ?? "no error description"); return }

        let credential = CFArrayGetValueAtIndex(credentials, 0) as! CFDictionary
        let server = unsafeBitCast(CFDictionaryGetValue(credential, unsafeBitCast(kSecAttrServer, to: UnsafeRawPointer<Void>.self)), to: CFString.self)
        let account = unsafeBitCast(CFDictionaryGetValue(credential, unsafeBitCast(kSecAttrAccount, to: UnsafeRawPointer<Void>.self)), to: CFString.self)
        let password = unsafeBitCast(CFDictionaryGetValue(credential, unsafeBitCast(kSecSharedPassword, to: UnsafeRawPointer<Void>.self)), to: CFString.self)

        print("Keychain OK:", server, account, password)
    }