1 /*
2  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 package java.security.spec;
27 
28 /**
29  * This class represents the ASN.1 encoding of a public key,
30  * encoded according to the ASN.1 type {@code SubjectPublicKeyInfo}.
31  * The {@code SubjectPublicKeyInfo} syntax is defined in the X.509
32  * standard as follows:
33  *
34  * <pre>
35  * SubjectPublicKeyInfo ::= SEQUENCE {
36  *   algorithm AlgorithmIdentifier,
37  *   subjectPublicKey BIT STRING }
38  * </pre>
39  *
40  * @author Jan Luehe
41  *
42  *
43  * @see java.security.Key
44  * @see java.security.KeyFactory
45  * @see KeySpec
46  * @see EncodedKeySpec
47  * @see PKCS8EncodedKeySpec
48  *
49  * @since 1.2
50  */
51 
52 public class X509EncodedKeySpec extends EncodedKeySpec {
53 
54     /**
55      * Creates a new X509EncodedKeySpec with the given encoded key.
56      *
57      * @param encodedKey the key, which is assumed to be
58      * encoded according to the X.509 standard. The contents of the
59      * array are copied to protect against subsequent modification.
60      * @exception NullPointerException if {@code encodedKey}
61      * is null.
62      */
X509EncodedKeySpec(byte[] encodedKey)63     public X509EncodedKeySpec(byte[] encodedKey) {
64         super(encodedKey);
65     }
66 
67     /**
68      * Returns the key bytes, encoded according to the X.509 standard.
69      *
70      * @return the X.509 encoding of the key. Returns a new array
71      * each time this method is called.
72      */
getEncoded()73     public byte[] getEncoded() {
74         return super.getEncoded();
75     }
76 
77     /**
78      * Returns the name of the encoding format associated with this
79      * key specification.
80      *
81      * @return the string {@code "X.509"}.
82      */
getFormat()83     public final String getFormat() {
84         return "X.509";
85     }
86 }
87