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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

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 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package java.security.spec;

/**

 * This class represents the ASN.1 encoding of a public key,

 * encoded according to the ASN.1 type {@code SubjectPublicKeyInfo}.

 * The {@code SubjectPublicKeyInfo} syntax is defined in the X.509

 * standard as follows:

 *

 * <pre>

 * SubjectPublicKeyInfo ::= SEQUENCE {

 *   algorithm AlgorithmIdentifier,

 *   subjectPublicKey BIT STRING }

 * </pre>

 *

 * @author Jan Luehe

 *

 *

 * @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 {@code 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.

     * @throws NullPointerException if {@code encodedKey}

     * is null.

     */

    public X509EncodedKeySpec(byte[] encodedKey) {

        super(encodedKey);

    }

    /**

     * Creates a new {@code X509EncodedKeySpec} with the given encoded key.

     * This constructor is useful when subsequent callers of the

     * {@code X509EncodedKeySpec} object might not know the algorithm

     * of the 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.

     * @param algorithm the algorithm name of the encoded public key

     * See the KeyFactory section in the <a href=

     * "{@docRoot}/../specs/security/standard-names.html#keyfactory-algorithms">

     * Java Security Standard Algorithm Names Specification</a>

     * for information about standard algorithm names.

     * @throws NullPointerException if {@code encodedKey}

     * or {@code algorithm} is null.

     * @throws IllegalArgumentException if {@code algorithm} is

     * the empty string {@code ""}

     * @since 9

     */

    public X509EncodedKeySpec(byte[] encodedKey, String algorithm) {

        super(encodedKey, algorithm);

    }

    /**

     * 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"}.

     */

    public final String getFormat() {

        return "X.509";

    }

}