added in API level 1

RC2ParameterSpec

public class RC2ParameterSpec
extends Object implements AlgorithmParameterSpec

java.lang.Object
   ↳ javax.crypto.spec.RC2ParameterSpec


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.

Summary

Public constructors

RC2ParameterSpec(int effectiveKeyBits)

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

RC2ParameterSpec(int effectiveKeyBits, byte[] iv)

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

RC2ParameterSpec(int effectiveKeyBits, byte[] iv, int offset)

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

Public methods

boolean equals(Object obj)

Tests for equality between the specified object and this object.

int getEffectiveKeyBits()

Returns the effective key size in bits.

byte[] getIV()

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

int hashCode()

Calculates a hash code value for the object.

Inherited methods

Public constructors

RC2ParameterSpec

added in API level 1
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.

RC2ParameterSpec

added in API level 1
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.

Throws
IllegalArgumentException if iv is null.

RC2ParameterSpec

added in API level 1
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.

Throws
IllegalArgumentException if iv is null.

Public methods

equals

added in API level 1
public boolean equals (Object obj)

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.

getEffectiveKeyBits

added in API level 1
public int getEffectiveKeyBits ()

Returns the effective key size in bits.

Returns
int the effective key size in bits.

getIV

added in API level 1
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.

hashCode

added in API level 1
public int hashCode ()

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

Returns
int a hash code value for this object.