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package javax.crypto.spec;

import java.math.BigInteger;

This class specifies a Diffie-Hellman public key with its associated
parameters.
Note that this class does not perform any validation on specified
parameters. Thus, the specified values are returned directly even
if they are null.
Author:
Jan Luehe
See Also:
DHPrivateKeySpec
Since:
1.4/**
 * This class specifies a Diffie-Hellman public key with its associated
 * parameters.
 *
 * <p>Note that this class does not perform any validation on specified
 * parameters. Thus, the specified values are returned directly even
 * if they are null.
 *
 * @author Jan Luehe
 *
 * @see DHPrivateKeySpec
 * @since 1.4
 */
public class DHPublicKeySpec implements java.security.spec.KeySpec {

    // The public value
    private BigInteger y;

    // The prime modulus
    private BigInteger p;

    // The base generator
    private BigInteger g;

    
Constructor that takes a public value y, a prime
modulus p, and a base generator g.
Params:
y –  public value y
p –  prime modulus p
g –  base generator g/**
     * Constructor that takes a public value <code>y</code>, a prime
     * modulus <code>p</code>, and a base generator <code>g</code>.
     * @param y  public value y
     * @param p  prime modulus p
     * @param g  base generator g
     */
    public DHPublicKeySpec(BigInteger y, BigInteger p, BigInteger g) {
        this.y = y;
        this.p = p;
        this.g = g;
    }

    
Returns the public value y.
Returns:
the public value y/**
     * Returns the public value <code>y</code>.
     *
     * @return the public value <code>y</code>
     */
    public BigInteger getY() {
        return this.y;
    }

    
Returns the prime modulus p.
Returns:
the prime modulus p/**
     * Returns the prime modulus <code>p</code>.
     *
     * @return the prime modulus <code>p</code>
     */
    public BigInteger getP() {
        return this.p;
    }

    
Returns the base generator g.
Returns:
the base generator g/**
     * Returns the base generator <code>g</code>.
     *
     * @return the base generator <code>g</code>
     */
    public BigInteger getG() {
        return this.g;
    }
}