DHPrivateKeySpec.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * accompanied this code).
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package javax.crypto.spec;

import java.math.BigInteger;

/**
 * This class specifies a Diffie-Hellman private 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 DHPublicKeySpec
 * @since 1.4
 */
public class DHPrivateKeySpec implements java.security.spec.KeySpec {

    // The private value
    private BigInteger x;

    // The prime modulus
    private BigInteger p;

    // The base generator
    private BigInteger g;

    /**
     * Constructor that takes a private value <code>x</code>, a prime
     * modulus <code>p</code>, and a base generator <code>g</code>.
     * @param x private value x
     * @param p prime modulus p
     * @param g base generator g
     */
    public DHPrivateKeySpec(BigInteger x, BigInteger p, BigInteger g) {
        this.x = x;
        this.p = p;
        this.g = g;
    }

    /**
     * Returns the private value <code>x</code>.
     *
     * @return the private value <code>x</code>
     */
    public BigInteger getX() {
        return this.x;
    }

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

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