package com.interpress_project.modernshare.ipcommon.fastMD5.util;

/**
 * Fast implementation of RSA's MD5 hash generator in Java JDK Beta-2 or higher<br>
 * Originally written by Santeri Paavolainen, Helsinki Finland 1996 <br>
 * (c) Santeri Paavolainen, Helsinki Finland 1996 <br>
 * Some changes Copyright (c) 2002 Timothy W Macinta <br>
 * <p>
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Library General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 * <p>
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
 * details.
 * <p>
 * You should have received a copy of the GNU Library General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 675 Mass Ave, Cambridge, MA 02139, USA.
 * <p>
 * See http://www.twmacinta.com/myjava/fast_md5.php for more information on this
 * file.
 * <p>
 * Contains internal state of the MD5 class
 * <p>
 * Please note: I (Timothy Macinta) have put this code in the com.twmacinta.util
 * package only because it came without a package. I was not the the original
 * author of the code, although I did optimize it (substantially) and fix some
 * bugs.
 * 
 * @author Santeri Paavolainen <sjpaavol@cc.helsinki.fi>
 * @author Timothy W Macinta (twm@alum.mit.edu) (optimizations and bug fixes)
 */

class MD5State {
	/**
	 * 128-bit state
	 */
	int state[];

	/**
	 * 64-bit character count
	 */
	long count;

	/**
	 * 64-byte buffer (512 bits) for storing to-be-hashed characters
	 */
	byte buffer[];

	public MD5State() {
		buffer = new byte[64];
		count = 0;
		state = new int[4];

		state[0] = 0x67452301;
		state[1] = 0xefcdab89;
		state[2] = 0x98badcfe;
		state[3] = 0x10325476;

	}

	/** Create this State as a copy of another state */
	public MD5State(MD5State from) {
		this();

		int i;

		for (i = 0; i < buffer.length; i++) {
			this.buffer[i] = from.buffer[i];
		}

		for (i = 0; i < state.length; i++) {
			this.state[i] = from.state[i];
		}

		this.count = from.count;
	}
};
