# Token Validation

### In this section

* [The TokenValidator interface](https://help.qlik.com/talend/en-US/esb-sts-user-guide/8.0/tokenvalidator-interface)
* [TokenValidatorParameters](https://help.qlik.com/talend/en-US/esb-sts-user-guide/8.0/tokenvalidatorparameters)
* [TokenValidatorResponse](https://help.qlik.com/talend/en-US/esb-sts-user-guide/8.0/tokenvalidatorresponse)
* [The SCTValidator](https://help.qlik.com/talend/en-US/esb-sts-user-guide/8.0/sctvalidator)
* [The X509TokenValidator](https://help.qlik.com/talend/en-US/esb-sts-user-guide/8.0/x509tokenvalidator)
* [The UsernameTokenValidator](https://help.qlik.com/talend/en-US/esb-sts-user-guide/8.0/usernametokenvalidator)
* [Realms in the TokenValidators](https://help.qlik.com/talend/en-US/esb-sts-user-guide/8.0/realms-in-tokenvalidators)
* [The SAMLTokenValidator](https://help.qlik.com/talend/en-US/esb-sts-user-guide/8.0/samltokenvalidator)