# Cyclos4102Api.NfcExternalAuthenticateParameter

## Properties
Name | Type | Description | Notes
------------ | ------------- | ------------- | -------------
**key** | [**NfcTagKeyEnum**](NfcTagKeyEnum.md) | The NFC key over which the authentication is performed. Defaults to `operational`.         Possible values are: * appMaster: The application master key, used by Cyclos to create the application on the tag * operational: A key stored within the application that is used to guarantee the presence of the card in sensitive operations, such as receive payment (POS) or personalize the tag * piccMaster: The PICC master key, used to format the tag  | [optional] 
**tagChallenge** | **String** | The challenge generated by the NFC tag, encoded as hex | [optional]