[Home](./index.md) > [ibm-cloud-sdk-core](./ibm-cloud-sdk-core.md) > [CloudPakForDataAuthenticator](./ibm-cloud-sdk-core.cloudpakfordataauthenticator.md) ## CloudPakForDataAuthenticator class The CloudPakForDataAuthenticator will either use a username/password pair or a username/apikey pair to obtain a bearer token from a token server. When the bearer token expires, a new token is obtained from the token server. The bearer token will be sent as an Authorization header in the form: Authorization: Bearer <bearer-token> **Signature:** ```typescript export declare class CloudPakForDataAuthenticator extends TokenRequestBasedAuthenticator ``` **Extends:** [TokenRequestBasedAuthenticator](./ibm-cloud-sdk-core.tokenrequestbasedauthenticator.md) ## Constructors

Constructor	Modifiers	Description
[(constructor)(options)](./ibm-cloud-sdk-core.cloudpakfordataauthenticator._constructor_.md)		Create a new CloudPakForDataAuthenticator instance.

## Properties

Property	Modifiers	Type	Description
[requiredOptions](./ibm-cloud-sdk-core.cloudpakfordataauthenticator.requiredoptions.md)	`protected`	string\[\]
[tokenManager](./ibm-cloud-sdk-core.cloudpakfordataauthenticator.tokenmanager.md)	`protected`	[Cp4dTokenManager](./ibm-cloud-sdk-core.cp4dtokenmanager.md)

## Methods

Method	Modifiers	Description
[authenticationType()](./ibm-cloud-sdk-core.cloudpakfordataauthenticator.authenticationtype.md)		Returns the authenticator's type ('cp4d').