| Interface | Description | 
|---|---|
| Authenticator | Provides methods related to authentication of a request. | 
| Authenticator.SaslNegotiator | Performs the actual SASL negotiation for a single authentication attempt. | 
| Class | Description | 
|---|---|
| AllowAllAuthenticator | Allows all requests to be authenticated. | 
| AuthenticatedUser | |
| JaasKrbUtil | JAAS utilities for Kerberos login. | 
| JaasKrbUtil.KrbCallbackHandler | |
| Krb5Authenticator | A Kerberos (GSSAPI) implementation of an  AuthenticatorThis authenticator authenticates and autorizes all clients with a valid service ticket. | 
| SimpleAuthenticator | A simple implementation of an  Authenticatorthat uses aGraphinstance as a credential store. | 
| Exception | Description | 
|---|---|
| AuthenticationException | An exception that occurs when during authentication such as a failed login. | 
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