FileKeyUnwrapper (Apache Parquet Hadoop 1.12.0 API)

java.lang.Object
- org.apache.parquet.crypto.keytools.FileKeyUnwrapper

All Implemented Interfaces:: DecryptionKeyRetriever

public class FileKeyUnwrapper
extends Object
implements DecryptionKeyRetriever

- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method 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.