/*
 * @(#)X509EncodedKeySpec.java	1.22 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package java.security.spec;

/**
 * This class represents the ASN.1 encoding of a public key,
 * encoded according to the ASN.1 type <code>SubjectPublicKeyInfo</code>.
 * The <code>SubjectPublicKeyInfo</code> syntax is defined in the X.509 
 * standard as follows:
 *
 * <pre>
 * SubjectPublicKeyInfo ::= SEQUENCE {
 *   algorithm AlgorithmIdentifier,
 *   subjectPublicKey BIT STRING }
 * </pre>
 *
 * @author Jan Luehe
 *
 * @version 1.22, 11/17/05
 *
 * @see java.security.Key
 * @see java.security.KeyFactory
 * @see KeySpec
 * @see EncodedKeySpec
 * @see PKCS8EncodedKeySpec
 *
 * @since 1.2
 */

public class X509EncodedKeySpec extends EncodedKeySpec {

    /**
     * Creates a new X509EncodedKeySpec with the given encoded key.
     *
     * @param encodedKey the key, which is assumed to be
     * encoded according to the X.509 standard. The contents of the 
     * array are copied to protect against subsequent modification.
     * @exception NullPointerException if <code>encodedKey</code>
     * is null.
     */
    public X509EncodedKeySpec(byte[] encodedKey) {
	super(encodedKey);
    }

    /**
     * Returns the key bytes, encoded according to the X.509 standard.
     *
     * @return the X.509 encoding of the key. Returns a new array 
     * each time this method is called.
     */
    public byte[] getEncoded() {
	return super.getEncoded();
    }

    /**
     * Returns the name of the encoding format associated with this
     * key specification.
     *
     * @return the string <code>"X.509"</code>.
     */
    public final String getFormat() {
	return "X.509";
    }
}