001: /*
002: * SecretString.java
003: *
004: *
005: * Copyright (c) 2003 Rimfaxe ApS (www.rimfaxe.com).
006: * All rights reserved.
007: *
008: * This package is written by Lars Andersen <lars@rimfaxe.com>
009: * and licensed by Rimfaxe ApS.
010: *
011: * Redistribution and use in source and binary forms, with or without
012: * modification, are permitted provided that the following conditions
013: * are met:
014: *
015: * 1. Redistributions of source code must retain the above copyright
016: * notice, this list of conditions and the following disclaimer.
017: *
018: * 2. Redistributions in binary form must reproduce the above copyright
019: * notice, this list of conditions and the following disclaimer in
020: * the documentation and/or other materials provided with the
021: * distribution.
022: *
023: * 3. The end-user documentation included with the redistribution, if
024: * any, must include the following acknowlegement:
025: * "This product includes software developed by Rimfaxe ApS
026: (www.rimfaxe.com)"
027: * Alternately, this acknowlegement may appear in the software itself,
028: * if and wherever such third-party acknowlegements normally appear.
029: *
030: * 4. The names "Rimfaxe", "Rimfaxe Software", "Lars Andersen" and
031: * "Rimfaxe WebServer" must not be used to endorse or promote products
032: * derived from this software without prior written permission. For written
033: * permission, please contact info@rimfaxe.com
034: *
035: * 5. Products derived from this software may not be called "Rimfaxe"
036: * nor may "Rimfaxe" appear in their names without prior written
037: * permission of the Rimfaxe ApS.
038: *
039: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
040: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
041: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
042: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
043: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
044: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
045: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
046: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
047: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
048: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
049: * SUCH DAMAGE.
050: *
051: */
052:
053: package com.rimfaxe.util;
054:
055: import java.security.*;
056: import java.util.*;
057:
058: /**
059: *
060: * @author Lars Andersen
061: */
062: public class SecretString {
063: static String[] cvals = { "a", "d", "t", "y", "b", "n", ";", "u",
064: "i", "A", "H", "6", "o", "O", "1", "P" };
065:
066: /** Creates a new instance of SecretString */
067: public SecretString() {
068: }
069:
070: public static String encrypt(String in) {
071: //System.out.println("SecretString.encrypt "+in);
072: MessageDigest d = com.rimfaxe.security.MessageDigestStore
073: .getDigest("SHA-1");
074: d.reset();
075: d.update(in.getBytes());
076: byte[] buf = d.digest();
077:
078: StringBuffer sb = new StringBuffer();
079: for (int i = 0; i < buf.length; i++) {
080: byte hi = (byte) ((buf[i] & 0xf0) >> 4);
081: byte lo = (byte) (buf[i] & 0x0f);
082:
083: String tmp1 = cvals[hi];
084: String tmp2 = cvals[lo];
085:
086: sb.append("" + tmp1 + tmp2);
087: }
088:
089: //System.out.println("Encrypt "+in+" to "+sb);
090: return "" + sb;
091: }
092:
093: public static boolean equals(String in, String secret) {
094: String ec = encrypt(in);
095: if (ec.equalsIgnoreCase(secret))
096: return true;
097: return false;
098: }
099:
100: public static void main(String[] args) {
101: String ec = encrypt(args[0]);
102: System.out.println("Encrypt " + args[0] + " to " + ec);
103: System.exit(0);
104: }
105: }
|