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JDK 1.6
  java.security.spec. RSAKeyGenParameterSpec View Javadoc
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/*
 * @(#)RSAKeyGenParameterSpec.java	1.9 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package java.security.spec;

import java.math.BigInteger;
import java.security.spec.AlgorithmParameterSpec;

/**
 * This class specifies the set of parameters used to generate an RSA
 * key pair.
 * 
 * @author Jan Luehe
 * @version 1.9 11/17/05
 *
 * @see java.security.KeyPairGenerator#initialize(java.security.spec.AlgorithmParameterSpec)
 *
 * @since 1.3
 */

public class RSAKeyGenParameterSpec implements AlgorithmParameterSpec {

    private int keysize;
    private BigInteger publicExponent;

    /**
     * The public-exponent value F0 = 3.
     */
    public static final BigInteger F0 = BigInteger.valueOf(3);

    /**
     * The public exponent-value F4 = 65537.
     */
    public static final BigInteger F4 = BigInteger.valueOf(65537);

    /**
     * Constructs a new <code>RSAParameterSpec</code> object from the
     * given keysize and public-exponent value.
     *
     * @param keysize the modulus size (specified in number of bits)
     * @param publicExponent the public exponent
     */
    public RSAKeyGenParameterSpec(int keysize, BigInteger publicExponent) {
	this.keysize = keysize;
	this.publicExponent = publicExponent;
    }

    /**
     * Returns the keysize.
     *
     * @return the keysize.
     */
    public int getKeysize() {
	return keysize;
    }

    /**
     * Returns the public-exponent value.
     *
     * @return the public-exponent value.
     */
    public BigInteger getPublicExponent() {
	return publicExponent;
    }
}

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