Top Description Fields Constructors Methods
javax.crypto.spec

public Class RC2ParameterSpec

extends Object
implements AlgorithmParameterSpec
Class Inheritance
All Implemented Interfaces
java.security.spec.AlgorithmParameterSpec
Imports
java.security.spec.AlgorithmParameterSpec, java.util.Arrays

This class specifies the parameters used with the RC2 algorithm.

The parameters consist of an effective key size and optionally an 8-byte initialization vector (IV) (only in feedback mode).

This class can be used to initialize a Cipher object that implements the RC2 algorithm.

Author
Jan Luehe
Since
1.4

Field Summary

Modifier and TypeField and Description
private final int
private byte[]

Constructor Summary

AccessConstructor and Description
public
RC2ParameterSpec(int
the effective key size in bits.
effectiveKeyBits
)

Constructs a parameter set for RC2 from the given effective key size (in bits).

public
RC2ParameterSpec(int
the effective key size in bits.
effectiveKeyBits
,
byte[]
the buffer with the 8-byte IV. The first 8 bytes of the buffer are copied to protect against subsequent modification.
iv
)

Constructs a parameter set for RC2 from the given effective key size (in bits) and an 8-byte IV.

public
RC2ParameterSpec(int
the effective key size in bits.
effectiveKeyBits
,
byte[]
the buffer with the IV. The first 8 bytes of the buffer beginning at offset inclusive are copied to protect against subsequent modification.
iv
,
int
the offset in iv where the 8-byte IV starts.
offset
)

Constructs a parameter set for RC2 from the given effective key size (in bits) and IV.

Method Summary

Modifier and TypeMethod and Description
public boolean

Returns:

true if the objects are considered equal, false if obj is null or otherwise.
equals
(Object
the object to test for equality with this object.
obj
)

Overrides java.lang.Object.equals.

Tests for equality between the specified object and this object.

public int

Returns:

the effective key size in bits.
getEffectiveKeyBits
()

Returns the effective key size in bits.

public byte[]

Returns:

the IV or null if this parameter set does not contain an IV. Returns a new array each time this method is called.
getIV
()

Returns the IV or null if this parameter set does not contain an IV.

public int
hashCode()

Overrides java.lang.Object.hashCode.

Calculates a hash code value for the object.

Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAlltoStringwaitwaitwait

Field Detail

effectiveKeyBitsback to summary
private final int effectiveKeyBits
ivback to summary
private byte[] iv

Constructor Detail

RC2ParameterSpecback to summary
public RC2ParameterSpec(int effectiveKeyBits)

Constructs a parameter set for RC2 from the given effective key size (in bits).

Parameters
effectiveKeyBits:int

the effective key size in bits.

RC2ParameterSpecback to summary
public RC2ParameterSpec(int effectiveKeyBits, byte[] iv)

Constructs a parameter set for RC2 from the given effective key size (in bits) and an 8-byte IV.

The bytes that constitute the IV are those between iv[0] and iv[7] inclusive.

Parameters
effectiveKeyBits:int

the effective key size in bits.

iv:byte[]

the buffer with the 8-byte IV. The first 8 bytes of the buffer are copied to protect against subsequent modification.

Exceptions
IllegalArgumentException:
if iv is null.
RC2ParameterSpecback to summary
public RC2ParameterSpec(int effectiveKeyBits, byte[] iv, int offset)

Constructs a parameter set for RC2 from the given effective key size (in bits) and IV.

The IV is taken from iv, starting at offset inclusive. The bytes that constitute the IV are those between iv[offset] and iv[offset+7] inclusive.

Parameters
effectiveKeyBits:int

the effective key size in bits.

iv:byte[]

the buffer with the IV. The first 8 bytes of the buffer beginning at offset inclusive are copied to protect against subsequent modification.

offset:int

the offset in iv where the 8-byte IV starts.

Exceptions
IllegalArgumentException:
if iv is null.

Method Detail

equalsback to summary
public boolean equals(Object obj)

Overrides java.lang.Object.equals.

Tests for equality between the specified object and this object. Two RC2ParameterSpec objects are considered equal if their effective key sizes and IVs are equal. (Two IV references are considered equal if both are null.)

Parameters
obj:Object

the object to test for equality with this object.

Returns:boolean

true if the objects are considered equal, false if obj is null or otherwise.

Annotations
@Override
getEffectiveKeyBitsback to summary
public int getEffectiveKeyBits()

Returns the effective key size in bits.

Returns:int

the effective key size in bits.

getIVback to summary
public byte[] getIV()

Returns the IV or null if this parameter set does not contain an IV.

Returns:byte[]

the IV or null if this parameter set does not contain an IV. Returns a new array each time this method is called.

hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Calculates a hash code value for the object. Objects that are equal will also have the same hashcode.

Returns:int

Doc from java.lang.Object.hashCode.

a hash code value for this object

Annotations
@Override