org.bouncycastle.crypto.params

Class DHParameters

java.lang.Object

org.bouncycastle.crypto.params.DHParameters

All Implemented Interfaces:

CipherParameters

public class DHParameters
extends Object
implements CipherParameters

Constructor Summary

Constructors

Constructor and Description
DHParameters(BigInteger p, BigInteger g)
DHParameters(BigInteger p, BigInteger g, BigInteger q)
DHParameters(BigInteger p, BigInteger g, BigInteger q, BigInteger j, DHValidationParameters validation)
DHParameters(BigInteger p, BigInteger g, BigInteger q, int l)
DHParameters(BigInteger p, BigInteger g, BigInteger q, int m, int l)
DHParameters(BigInteger p, BigInteger g, BigInteger q, int m, int l, BigInteger j, DHValidationParameters validation)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj) Compares this instance with the specified object and indicates if they are equal.
BigInteger	getG()
BigInteger	getJ() Return the subgroup factor J.
int	getL() Return the private value length in bits - if set, zero otherwise
int	getM() Return the minimum length of the private value.
BigInteger	getP()
BigInteger	getQ()
DHValidationParameters	getValidationParameters()
int	hashCode() Returns an integer hash code for this object.

Methods inherited from class java.lang.Object

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

Constructor Detail

DHParameters

public DHParameters(BigInteger p,
                    BigInteger g)

DHParameters

public DHParameters(BigInteger p,
                    BigInteger g,
                    BigInteger q)

DHParameters

public DHParameters(BigInteger p,
                    BigInteger g,
                    BigInteger q,
                    int l)

DHParameters

public DHParameters(BigInteger p,
                    BigInteger g,
                    BigInteger q,
                    int m,
                    int l)

DHParameters

public DHParameters(BigInteger p,
                    BigInteger g,
                    BigInteger q,
                    BigInteger j,
                    DHValidationParameters validation)

DHParameters

public DHParameters(BigInteger p,
                    BigInteger g,
                    BigInteger q,
                    int m,
                    int l,
                    BigInteger j,
                    DHValidationParameters validation)

Method Detail

getP

public BigInteger getP()

getG

public BigInteger getG()

getQ

public BigInteger getQ()

getJ

public BigInteger getJ()

Return the subgroup factor J.

Returns:

subgroup factor

getM

public int getM()

Return the minimum length of the private value.

Returns:

the minimum length of the private value in bits.

getL

public int getL()

Return the private value length in bits - if set, zero otherwise

Returns:

the private value length in bits, zero otherwise.

getValidationParameters

public DHValidationParameters getValidationParameters()

equals

public boolean equals(Object obj)

Description copied from class: Object

Compares this instance with the specified object and indicates if they are equal. In order to be equal, o must represent the same object as this instance using a class-specific comparison. The general contract is that this comparison should be reflexive, symmetric, and transitive. Also, no object reference other than null is equal to null.

The default implementation returns true only if this == o. See Writing a correct equals method if you intend implementing your own equals method.

The general contract for the equals and Object.hashCode() methods is that if equals returns true for any two objects, then hashCode() must return the same value for these objects. This means that subclasses of Object usually override either both methods or neither of them.

Overrides:

equals in class Object

Parameters:

obj - the object to compare this instance with.

Returns:

true if the specified object is equal to this Object; false otherwise.

See Also:

Object.hashCode()

hashCode

public int hashCode()

Description copied from class: Object

Returns an integer hash code for this object. By contract, any two objects for which Object.equals(java.lang.Object) returns true must return the same hash code value. This means that subclasses of Object usually override both methods or neither method.

Note that hash values must not change over time unless information used in equals comparisons also changes.

See Writing a correct hashCode method if you intend implementing your own hashCode method.

Overrides:

hashCode in class Object

Returns:

this object's hash code.

See Also:

Object.equals(java.lang.Object)