// $Id: SHA224.java 54 2007-01-24 16:22:09Z tp $
package fr.cryptohash;
/**
* <p>This class implements the SHA-224 digest algorithm under the
* <code>Digest</code> API. SHA-224 is specified by FIPS 180-2.</p>
*
* <pre>
* ==========================(LICENSE BEGIN)============================
*
* Copyright (c) 2007 Projet RNRT SAPHIR
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* ===========================(LICENSE END)=============================
* </pre>
*
* @version $Revision: 54 $
* @author Thomas Pornin <thomas.pornin@cryptolog.com>
*/
public class SHA224 extends SHA2Core {
/**
* Create the engine.
*/
public SHA224()
{
super();
}
/** The initial value for SHA-224. */
private static final int[] initVal = {
0xC1059ED8, 0x367CD507, 0x3070DD17, 0xF70E5939,
0xFFC00B31, 0x68581511, 0x64F98FA7, 0xBEFA4FA4
};
/** @see SHA2Core */
int[] getInitVal()
{
return initVal;
}
/** @see Digest */
public int getDigestLength()
{
return 28;
}
/** @see Digest */
public Digest copy()
{
return copyState(new SHA224());
}
}