org.jasypt.salt

Class StringFixedIVGenerator

Object

org.jasypt.salt.StringFixedIVGenerator

All Implemented Interfaces:

IVGenerator

public class StringFixedIVGenerator
extends Object
implements IVGenerator

String based implementation of IVGenerator, that will always return the same IV. This IV is returned as bytes using the specified charset for conversion (UTF-8 by default).

If the requested IV has a size in bytes smaller than the specified IV, the first n bytes are returned. If it is larger, an exception is thrown.

This class is thread-safe.

Since:

1.9.3

Author:

Alex Scal

Constructor Summary

Constructors

Constructor and Description
StringFixedIVGenerator(String iv) Creates a new instance of FixedStringIVGenerator using the default charset.
StringFixedIVGenerator(String iv, String charset) Creates a new instance of FixedStringIVGenerator

Method Summary

Modifier and Type	Method and Description
byte[]	generateIV(int lengthBytes) Return IV with the specified byte length.
boolean	includePlainIVInEncryptionResults() As this salt generator provides a fixed IV, its inclusion unencrypted in encryption results is not necessary, and in fact not desirable (so that it remains hidden).

Methods inherited from class Object

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

Constructor Detail

StringFixedIVGenerator

public StringFixedIVGenerator(String iv)

Creates a new instance of FixedStringIVGenerator using the default charset.

Parameters:

iv - the specified salt.

StringFixedIVGenerator

public StringFixedIVGenerator(String iv,
                              String charset)

Creates a new instance of FixedStringIVGenerator

Parameters:

iv - the specified salt.

charset - the specified charset

Method Detail

generateIV

public byte[] generateIV(int lengthBytes)

Return IV with the specified byte length.

Specified by:

generateIV in interface IVGenerator

Parameters:

lengthBytes - length in bytes.

Returns:

the generated salt.

includePlainIVInEncryptionResults

public boolean includePlainIVInEncryptionResults()

As this salt generator provides a fixed IV, its inclusion unencrypted in encryption results is not necessary, and in fact not desirable (so that it remains hidden).

Specified by:

includePlainIVInEncryptionResults in interface IVGenerator

Returns:

false