org.apache.parquet.crypto.keytools

Class FileKeyUnwrapper

java.lang.Object

org.apache.parquet.crypto.keytools.FileKeyUnwrapper

All Implemented Interfaces:

DecryptionKeyRetriever

public class FileKeyUnwrapper
extends Object
implements DecryptionKeyRetriever

Method Summary

Modifier and Type	Method and Description
byte[]	getKey(byte[] keyMetadataBytes) Returns encryption key using the key metadata.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getKey

public byte[] getKey(byte[] keyMetadataBytes)

Description copied from interface: DecryptionKeyRetriever

Returns encryption key using the key metadata. If your key retrieval code throws runtime exceptions related to access control (permission) problems (such as Hadoop AccessControlException), catch them and throw the KeyAccessDeniedException.

Specified by:

getKey in interface DecryptionKeyRetriever

Parameters:

keyMetadataBytes - arbitrary byte array with encryption key metadata

Returns:

encryption key. Key length can be either 16, 24 or 32 bytes.