Package javax.crypto.spec

Class RC5ParameterSpec

java.lang.Object

javax.crypto.spec.RC5ParameterSpec

All Implemented Interfaces:

AlgorithmParameterSpec

public class RC5ParameterSpec
extends Object
implements AlgorithmParameterSpec

The algorithm parameter specification for the RC5 algorithm.

Constructor Summary

Constructors

Constructor	Description
RC5ParameterSpec(int version, int rounds, int wordSize)	Creates a new RC5ParameterSpec instance with the specified version, round count an word size (in bits).
RC5ParameterSpec(int version, int rounds, int wordSize, byte[] iv)	Creates a new RC5ParameterSpec instance with the specified version, round count, word size (in bits) and an initialization vector.
RC5ParameterSpec(int version, int rounds, int wordSize, byte[] iv, int offset)	Creates a new RC5ParameterSpec instance with the specified version, round count, wordSize (in bits), an initialization vector and an offset.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)	Compares the specified object with this RC5ParameterSpec instance.
byte[]	getIV()	Returns a copy of the initialization vector.
int	getRounds()	Returns the round count.
int	getVersion()	Returns the version.
int	getWordSize()	Returns the word size (in bits).
int	hashCode()	Returns the hash code of this RC5ParameterSpec instance.

Methods inherited from class java.lang.Object

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

Constructor Detail

RC5ParameterSpec

public RC5ParameterSpec(int version,
                        int rounds,
                        int wordSize)

Creates a new RC5ParameterSpec instance with the specified version, round count an word size (in bits).

Parameters:

version - the version.

rounds - the round count.

wordSize - the word size (in bits).

RC5ParameterSpec

public RC5ParameterSpec(int version,
                        int rounds,
                        int wordSize,
                        byte[] iv)

Creates a new RC5ParameterSpec instance with the specified version, round count, word size (in bits) and an initialization vector.

The size of the initialization vector must be at least 2 * (wordSize / 8) bytes which are copied to protect them against modification.

Parameters:

version - the version.

rounds - the round count.

wordSize - the word size (in bits).

iv - the initialization vector.

Throws:

IllegalArgumentException - if the initialization vector is null or shorter than 2 * (wordSize / 8).

RC5ParameterSpec

public RC5ParameterSpec(int version,
                        int rounds,
                        int wordSize,
                        byte[] iv,
                        int offset)

Creates a new RC5ParameterSpec instance with the specified version, round count, wordSize (in bits), an initialization vector and an offset.

The size of the initialization vector must be at least offset + (2 * (wordSize / 8)) bytes. The bytes starting at offset are copied to protect them against modification.

Parameters:

version - the version.

rounds - the round count.

wordSize - the word size (in bits).

iv - the initialization vector.

offset - the offset in the initialization vector.

Throws:

IllegalArgumentException - if the initialization vector is null of shorter than offset + (2 * (wordSize / 8)).

ArrayIndexOutOfBoundsException - if offset is negative.

Method Detail

getVersion

public int getVersion()

Returns the version.

Returns:

the version.

getRounds

public int getRounds()

Returns the round count.

Returns:

the round count.

getWordSize

public int getWordSize()

Returns the word size (in bits).

Returns:

the word size (in bits).

getIV

public byte[] getIV()

Returns a copy of the initialization vector.

Returns:

a copy of the initialization vector, or null if none specified.

equals

public boolean equals(Object obj)

Compares the specified object with this RC5ParameterSpec instance.

Overrides:

equals in class Object

Parameters:

obj - the object to compare.

Returns:

true if version, round count, word size and initializaion vector of both objects are equal, otherwise false.

See Also:

Object.hashCode()

hashCode

public int hashCode()

Returns the hash code of this RC5ParameterSpec instance.

Overrides:

hashCode in class Object

Returns:

the hash code.

See Also:

Object.equals(java.lang.Object)