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Provides classes and interfaces for key specifications and algorithm
parameter specifications.

<p>A key specification is a transparent representation of the key
material that constitutes a key. A key may be specified in an
algorithm-specific way, or in an algorithm-independent encoding format
(such as ASN.1).  This package contains key specifications for
Diffie-Hellman public and private keys, as well as key specifications for DES,
Triple DES, and PBE secret keys.

<p>An algorithm parameter specification is a transparent representation
of the sets of parameters used with an algorithm. This package contains
algorithm parameter specifications for parameters used with the
Diffie-Hellman, DES, Triple DES, PBE, RC2 and RC5 algorithms.

<h2>Package Specification</h2>

<ul>
  <li>PKCS #3: Diffie-Hellman Key-Agreement Standard, Version 1.4,
  November 1993.</li>
  <li>PKCS #5: Password-Based Encryption Standard, Version 1.5,
  November 1993.</li>
  <li>Federal Information Processing Standards Publication (FIPS PUB) 46-2:
  Data Encryption Standard (DES) </li>
</ul>

<h2>Related Documentation</h2>

For documentation that includes information about algorithm parameter
and key specifications, please see:
<ul>
  <li>
    <a href=
      "{@docRoot}/../technotes/guides/security/crypto/CryptoSpec.html">
      <b>Java<FONT SIZE=-2><SUP>TM</SUP></FONT>
      Cryptography Architecture API Specification and Reference
      </b></a></li>
  <li>
    <a href=
      "{@docRoot}/../technotes/guides/security/crypto/HowToImplAProvider.html">
      <b>How to Implement a Provider for the
      Java<FONT SIZE=-2><SUP>TM</SUP></FONT> Cryptography Architecture
      </b></a></li>
</ul>

@since 1.4
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