Package io.axoniq.dataprotection.cryptoengine

Class InMemoryCryptoEngine

java.lang.Object

io.axoniq.dataprotection.cryptoengine.DatabaseBackedCryptoEngine

io.axoniq.dataprotection.cryptoengine.InMemoryCryptoEngine

All Implemented Interfaces:

CryptoEngine

public class InMemoryCryptoEngine
extends DatabaseBackedCryptoEngine

Implementation of CryptoEngine that extends from DatabaseBackedCryptoEngine and simply keeps all its data in an in-memory ConcurrentHashMap. This is useful for (unit) testing purposes.

Constructor Summary

Constructors

Constructor	Description
InMemoryCryptoEngine()	Constructs an InMemoryCryptoEngine.

Method Summary

Modifier and Type	Method	Description
void	deleteKey(String id)	Deletes the key for a given id.
SecretKey	getKey(String id)	Retrieves the key for a given id.
protected SecretKey	putKeyIfAbsent(String id, SecretKeySpec secretKeySpec)	Stores the key for the given id, if no key is currently registered for this id.

Methods inherited from class io.axoniq.dataprotection.cryptoengine.DatabaseBackedCryptoEngine

createCipher, createDigestCipher, getKeyType, getOrCreateKey, setKeyType

Methods inherited from class java.lang.Object

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

Constructor Detail

InMemoryCryptoEngine

public InMemoryCryptoEngine()

Constructs an InMemoryCryptoEngine. There are no parameters to configure.

Method Detail

getKey

public SecretKey getKey(String id)

Description copied from interface: CryptoEngine

Retrieves the key for a given id.

Parameters:

id - the id of the SecretKey

Returns:

the existing SecretKey associated with the id, or null if no such key exists

putKeyIfAbsent

protected SecretKey putKeyIfAbsent(String id,
                                   SecretKeySpec secretKeySpec)

Description copied from class: DatabaseBackedCryptoEngine

Stores the key for the given id, if no key is currently registered for this id. Returns the new key belonging to id, which is either the key that was already registered or the key provided as the 2nd argument if no key was registered yet. (Please note that this is different behaviour from ConcurrentHashMap.putIfAbsent(Object, Object), which always returns the prior value belonging to key.)

Specified by:

putKeyIfAbsent in class DatabaseBackedCryptoEngine

Parameters:

id - the id for which to store/retrieve the secret key

secretKeySpec - the SecretKeySpec to store if none has been stored yet for id

Returns:

the effective SecretKeySpec for id

deleteKey

public void deleteKey(String id)

Description copied from interface: CryptoEngine

Deletes the key for a given id. Does nothing if the key doesn't exist.

Parameters:

id - the id of the SecretKey