org.apache.nifi.security.util.crypto

Class AbstractEncryptor

java.lang.Object

org.apache.nifi.security.util.crypto.AbstractEncryptor

All Implemented Interfaces:

EncryptContent.Encryptor

Direct Known Subclasses:

KeyedEncryptor, PasswordBasedEncryptor

public abstract class AbstractEncryptor
extends Object
implements EncryptContent.Encryptor

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<String,String>	flowfileAttributes
private static org.slf4j.Logger	logger
private static String	MODIFIABLE_CHECK_KEY

Constructor Summary

Constructors

Constructor and Description
AbstractEncryptor()

Method Summary

Modifier and Type	Method and Description
void	updateAttributes(Map<String,String> attributes) Updates the provided flowfile attribute map with the new attributes from this encryption/decryption operation.
(package private) static Map<String,String>	writeAttributes(EncryptionMethod encryptionMethod, KeyDerivationFunction kdf, byte[] iv, ByteCountingInputStream bcis, ByteCountingOutputStream bcos, boolean encryptMode) Returns the map of "standard" EncryptContent attributes set for the provided operation.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.nifi.processors.standard.EncryptContent.Encryptor

getDecryptionCallback, getEncryptionCallback

Field Detail

logger

private static final org.slf4j.Logger logger

MODIFIABLE_CHECK_KEY

private static final String MODIFIABLE_CHECK_KEY

See Also:

Constant Field Values

flowfileAttributes

protected transient Map<String,String> flowfileAttributes

Constructor Detail

AbstractEncryptor

public AbstractEncryptor()

Method Detail

updateAttributes

public void updateAttributes(Map<String,String> attributes)

Updates the provided flowfile attribute map with the new attributes from this encryption/decryption operation.

Specified by:

updateAttributes in interface EncryptContent.Encryptor

Parameters:

attributes - a modifiable map of attributes

writeAttributes

static Map<String,String> writeAttributes(EncryptionMethod encryptionMethod,
                                          KeyDerivationFunction kdf,
                                          byte[] iv,
                                          ByteCountingInputStream bcis,
                                          ByteCountingOutputStream bcos,
                                          boolean encryptMode)

Returns the map of "standard" EncryptContent attributes set for the provided operation.

Parameters:

encryptionMethod - the algorithm used

kdf - the KeyDerivationFunction used

iv - the Initialization Vector in byte[] form

bcis - the ByteCountingInputStream (plaintext for encrypt; cipher text for decrypt)

bcos - the ByteCountingOutputStream (reverse of input stream)

encryptMode - true for encrypt; false for decrypt

Returns:

the map of attributes to be added to the flowfile