org.jasypt.salt
Class RandomSaltGenerator

Object
  org.jasypt.salt.RandomSaltGenerator

All Implemented Interfaces:

SaltGenerator

public class RandomSaltGenerator
extends Object
implements SaltGenerator

This implementation of SaltGenerator holds a secure random generator which can be used for generating random salts 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:

1.2

Author:

Daniel Fernández

Field Summary

static String

DEFAULT_SECURE_RANDOM_ALGORITHM The default algorithm to be used for secure random number generation: set to SHA1PRNG.

Constructor Summary

RandomSaltGenerator()
Creates a new instance of RandomSaltGenerator using the default secure random number generation algorithm.

RandomSaltGenerator(String secureRandomAlgorithm)
Creates a new instance of RandomSaltGenerator specifying a secure random number generation algorithm.

Method Summary

byte[]	generateSalt(int lengthBytes) Generate a random salt of the specified length in bytes.
boolean	includePlainSaltInEncryptionResults() This salt 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

Field Detail

DEFAULT_SECURE_RANDOM_ALGORITHM

public static final String DEFAULT_SECURE_RANDOM_ALGORITHM

The default algorithm to be used for secure random number generation: set to SHA1PRNG.

See Also:

Constant Field Values

Constructor Detail

RandomSaltGenerator

public RandomSaltGenerator()

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

RandomSaltGenerator

public RandomSaltGenerator(String secureRandomAlgorithm)

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

Since:

1.5

Method Detail

generateSalt

public byte[] generateSalt(int lengthBytes)

Generate a random salt of the specified length in bytes.

Specified by:

generateSalt in interface SaltGenerator

Parameters:

lengthBytes - length in bytes.

Returns:

the generated salt.

includePlainSaltInEncryptionResults

public boolean includePlainSaltInEncryptionResults()

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

Specified by:

includePlainSaltInEncryptionResults in interface SaltGenerator

Returns:

true