| Interface | Description | 
|---|---|
| CryptoStreamUtils.BaseErrorHandler | SPARK-25535. | 
| GroupMappingServiceProvider | This Spark trait is used for mapping a given userName to a set of groups which it belongs to. | 
| HadoopDelegationTokenProvider | ::DeveloperApi::
 Hadoop delegation token provider. | 
| Class | Description | 
|---|---|
| CryptoStreamUtils | A util class for manipulating IO encryption and decryption streams. | 
| CryptoStreamUtils.ErrorHandlingReadableChannel | |
| SecurityConfigurationLock | There are cases when global JVM security configuration must be modified. |