org.jasypt.salt

Class RandomIVGenerator

Object

org.jasypt.salt.RandomIVGenerator

All Implemented Interfaces:

IVGenerator

public class RandomIVGenerator
extends Object
implements IVGenerator

This implementation of IVGenerator holds a secure random generator which can be used for generating random IVs for encryption or digesting.

The algorithm used for random number generation can be configured at instantiation time. If not, the default algorithm will be used.

This class is thread-safe.

Since:

1.9.3

Author:

Alex Scal

Constructor Summary

Constructors

Constructor and Description
RandomIVGenerator() Creates a new instance of RandomIVGenerator using the default secure random number generation algorithm.
RandomIVGenerator(String secureRandomAlgorithm) Creates a new instance of RandomIVGenerator specifying a secure random number generation algorithm.

Method Summary

Modifier and Type	Method and Description
byte[]	generateIV(int length) Generate a random IV of the specified length in bytes.
boolean	includePlainIVInEncryptionResults() This IV generator needs the salt to be included unencrypted in encryption results, because of its being random.

Methods inherited from class Object

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

Constructor Detail

RandomIVGenerator

public RandomIVGenerator()

Creates a new instance of RandomIVGenerator using the default secure random number generation algorithm.

RandomIVGenerator

public RandomIVGenerator(String secureRandomAlgorithm)

Creates a new instance of RandomIVGenerator specifying a secure random number generation algorithm.

Since:

1.9.3

Method Detail

generateIV

public byte[] generateIV(int length)

Generate a random IV of the specified length in bytes.

Specified by:

generateIV in interface IVGenerator

Parameters:

length - length in bytes.

Returns:

the generated IV.

includePlainIVInEncryptionResults

public boolean includePlainIVInEncryptionResults()

This IV generator needs the salt to be included unencrypted in encryption results, because of its being random. This method will always return true.

Specified by:

includePlainIVInEncryptionResults in interface IVGenerator

Returns:

true