com.twmacinta.util.MD5State Maven / Gradle / Ivy
package com.twmacinta.util;
/**
* Fast implementation of RSA's MD5 hash generator in Java JDK Beta-2 or higher
* Originally written by Santeri Paavolainen, Helsinki Finland 1996
* (c) Santeri Paavolainen, Helsinki Finland 1996
* Some changes Copyright (c) 2002 Timothy W Macinta
*
* 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.
*
* 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.
*
* 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.
*
* See http://www.twmacinta.com/myjava/fast_md5.php for more information
* on this file.
*
* Contains internal state of the MD5 class
*
* 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
* @author Timothy W Macinta ([email protected]) (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;
}
};