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    1   /*
    2    * Copyright (c) 1997, 2005, 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 private key,
   30    * encoded according to the ASN.1 type <code>PrivateKeyInfo</code>.
   31    * The <code>PrivateKeyInfo</code> syntax is defined in the PKCS#8 standard
   32    * as follows:
   33    *
   34    * <pre>
   35    * PrivateKeyInfo ::= SEQUENCE {
   36    *   version Version,
   37    *   privateKeyAlgorithm PrivateKeyAlgorithmIdentifier,
   38    *   privateKey PrivateKey,
   39    *   attributes [0] IMPLICIT Attributes OPTIONAL }
   40    *
   41    * Version ::= INTEGER
   42    *
   43    * PrivateKeyAlgorithmIdentifier ::= AlgorithmIdentifier
   44    *
   45    * PrivateKey ::= OCTET STRING
   46    *
   47    * Attributes ::= SET OF Attribute
   48    * </pre>
   49    *
   50    * @author Jan Luehe
   51    *
   52    *
   53    * @see java.security.Key
   54    * @see java.security.KeyFactory
   55    * @see KeySpec
   56    * @see EncodedKeySpec
   57    * @see X509EncodedKeySpec
   58    *
   59    * @since 1.2
   60    */
   61   
   62   public class PKCS8EncodedKeySpec extends EncodedKeySpec {
   63   
   64       /**
   65        * Creates a new PKCS8EncodedKeySpec with the given encoded key.
   66        *
   67        * @param encodedKey the key, which is assumed to be
   68        * encoded according to the PKCS #8 standard. The contents of
   69        * the array are copied to protect against subsequent modification.
   70        * @exception NullPointerException if <code>encodedKey</code>
   71        * is null.
   72        */
   73       public PKCS8EncodedKeySpec(byte[] encodedKey) {
   74           super(encodedKey);
   75       }
   76   
   77       /**
   78        * Returns the key bytes, encoded according to the PKCS #8 standard.
   79        *
   80        * @return the PKCS #8 encoding of the key. Returns a new array
   81        * each time this method is called.
   82        */
   83       public byte[] getEncoded() {
   84           return super.getEncoded();
   85       }
   86   
   87       /**
   88        * Returns the name of the encoding format associated with this
   89        * key specification.
   90        *
   91        * @return the string <code>"PKCS#8"</code>.
   92        */
   93       public final String getFormat() {
   94           return "PKCS#8";
   95       }
   96   }

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