| Package | Description | 
|---|---|
| org.apache.hadoop.security.authentication.server | Provides the server-side framework for authentication. | 
| org.apache.hadoop.security.authentication.util | 
| Modifier and Type | Method and Description | 
|---|---|
| static SignerSecretProvider | AuthenticationFilter. constructSecretProvider(javax.servlet.ServletContext ctx,
                       Properties config,
                       boolean disallowFallbackToRandomSecretProvider) | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | FileSignerSecretProviderA SignerSecretProvider that simply loads a secret from a specified file. | 
| class  | RandomSignerSecretProviderA SignerSecretProvider that uses a random number as its secret. | 
| class  | RolloverSignerSecretProviderAn abstract SignerSecretProvider that can be use used as the base for a
 rolling secret. | 
| class  | ZKSignerSecretProviderA SignerSecretProvider that synchronizes a rolling random secret between
 multiple servers using ZooKeeper. | 
| Constructor and Description | 
|---|
| Signer(SignerSecretProvider secretProvider)Creates a Signer instance using the specified SignerSecretProvider. | 
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