1. /*

  2.  * @(#)KeySpec.java	1.17 03/12/19

  3.  *

  4.  * Copyright 2004 Sun Microsystems, Inc. All rights reserved.

  5.  * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

  6.  */

  7. 

  8. package java.security.spec;

  9. 

  10. /**

  11.  * A (transparent) specification of the key material

  12.  * that constitutes a cryptographic key.

  13.  *

  14.  * <p>If the key is stored on a hardware device, its

  15.  * specification may contain information that helps identify the key on the

  16.  * device.

  17.  *

  18.  * <P> A key may be specified in an algorithm-specific way, or in an

  19.  * algorithm-independent encoding format (such as ASN.1).

  20.  * For example, a DSA private key may be specified by its components

  21.  * <code>x</code>, <code>p</code>, <code>q</code>, and <code>g</code>

  22.  * (see {@link DSAPrivateKeySpec}), or it may be

  23.  * specified using its DER encoding

  24.  * (see {@link PKCS8EncodedKeySpec}).

  25.  *

  26.  * <P> This interface contains no methods or constants. Its only purpose

  27.  * is to group (and provide type safety for) all key specifications.

  28.  * All key specifications must implement this interface.

  29.  *

  30.  * @author Jan Luehe

  31.  *

  32.  * @version 1.17, 12/19/03

  33.  *

  34.  * @see java.security.Key

  35.  * @see java.security.KeyFactory

  36.  * @see EncodedKeySpec

  37.  * @see X509EncodedKeySpec

  38.  * @see PKCS8EncodedKeySpec

  39.  * @see DSAPrivateKeySpec

  40.  * @see DSAPublicKeySpec

  41.  *

  42.  * @since 1.2

  43.  */

  44. 

  45. public interface KeySpec { }