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    1   /*
    2    * Copyright (c) 1997, 1999, 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    * A (transparent) specification of the key material
   30    * that constitutes a cryptographic key.
   31    *
   32    * <p>If the key is stored on a hardware device, its
   33    * specification may contain information that helps identify the key on the
   34    * device.
   35    *
   36    * <P> A key may be specified in an algorithm-specific way, or in an
   37    * algorithm-independent encoding format (such as ASN.1).
   38    * For example, a DSA private key may be specified by its components
   39    * <code>x</code>, <code>p</code>, <code>q</code>, and <code>g</code>
   40    * (see {@link DSAPrivateKeySpec}), or it may be
   41    * specified using its DER encoding
   42    * (see {@link PKCS8EncodedKeySpec}).
   43    *
   44    * <P> This interface contains no methods or constants. Its only purpose
   45    * is to group (and provide type safety for) all key specifications.
   46    * All key specifications must implement this interface.
   47    *
   48    * @author Jan Luehe
   49    *
   50    *
   51    * @see java.security.Key
   52    * @see java.security.KeyFactory
   53    * @see EncodedKeySpec
   54    * @see X509EncodedKeySpec
   55    * @see PKCS8EncodedKeySpec
   56    * @see DSAPrivateKeySpec
   57    * @see DSAPublicKeySpec
   58    *
   59    * @since 1.2
   60    */
   61   
   62   public interface KeySpec { }

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