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/**
* *****************************************************************************
*
* Design and Development by msg Applied Technology Research Copyright (c) 2019-2020 msg systems
* ag (http://www.msg-systems.com/) All Rights Reserved.
*
*
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.
*
*
****************************************************************************
*/
package com.graphqlio.uuid.helpers;
import java.util.HashMap;
import java.util.Map;
/**
* MD5 Encoder.
*
* @author Michael Schüfer
* @author Ahmed Amedlous
* @author Dr. Edgar Müller
*/
public class Md5 {
/**
* calculate the MD5 of an octet string.
*
* @param s the octet string to calculate
* @return the result string for the md5
*/
public static String md5(String s) {
Map options = new HashMap<>();
options.put("ibits", "8");
options.put("obits", "32");
options.put("obigendian", "false");
Map options2 = new HashMap<>();
options2.put("ibits", "32");
options2.put("ibigendian", "false");
String result =
UI32Common.getA2s(getMd5Core(UI32Common.getS2a(s, options), s.length() * 8), options2);
return result;
}
/**
* calculate the MD5 of an array of little-endian words, and a bit length.
*
* @param xx array of little-endian words
* @param len the bit length
* @return the result MD5
*/
private static long[] getMd5Core(Long[] xx, int len) {
/* append padding */
xx[len >> 5] |= 0x80 << ((len) % 32);
int index = (((len + 64) >>> 9) << 4) + 14;
Long[] x = new Long[index + 1];
for (int i = 0; i < xx.length; i++) {
x[i] = xx[i];
}
x[index] = (long) len;
for (int i = 0; i < x.length; i++) {
if (x[i] == null) {
x[i] = 0L;
}
}
long a = 1732584193;
long b = -271733879;
long c = -1732584194;
long d = 271733878;
for (int i = 0; i < x.length; i += 16) {
a = getMd5FF(a, b, c, d, x[i + 0], 7, -680876936);
d = getMd5FF(d, a, b, c, x[i + 1], 12, -389564586);
c = getMd5FF(c, d, a, b, x[i + 2], 17, 606105819);
b = getMd5FF(b, c, d, a, x[i + 3], 22, -1044525330);
a = getMd5FF(a, b, c, d, x[i + 4], 7, -176418897);
d = getMd5FF(d, a, b, c, x[i + 5], 12, 1200080426);
c = getMd5FF(c, d, a, b, x[i + 6], 17, -1473231341);
b = getMd5FF(b, c, d, a, x[i + 7], 22, -45705983);
a = getMd5FF(a, b, c, d, x[i + 8], 7, 1770035416);
d = getMd5FF(d, a, b, c, x[i + 9], 12, -1958414417);
c = getMd5FF(c, d, a, b, x[i + 10], 17, -42063);
b = getMd5FF(b, c, d, a, x[i + 11], 22, -1990404162);
a = getMd5FF(a, b, c, d, x[i + 12], 7, 1804603682);
d = getMd5FF(d, a, b, c, x[i + 13], 12, -40341101);
c = getMd5FF(c, d, a, b, x[i + 14], 17, -1502002290);
// b = getMd5FF(b, c, d, a, x[i+15], 22, 1236535329);
b = getMd5FF(b, c, d, a, 0, 22, 1236535329);
a = getMd5GG(a, b, c, d, x[i + 1], 5, -165796510);
d = getMd5GG(d, a, b, c, x[i + 6], 9, -1069501632);
c = getMd5GG(c, d, a, b, x[i + 11], 14, 643717713);
b = getMd5GG(b, c, d, a, x[i + 0], 20, -373897302);
a = getMd5GG(a, b, c, d, x[i + 5], 5, -701558691);
d = getMd5GG(d, a, b, c, x[i + 10], 9, 38016083);
// c = getMd5GG(c, d, a, b, x[i+15], 14, -660478335);
c = getMd5GG(c, d, a, b, 0, 14, -660478335);
b = getMd5GG(b, c, d, a, x[i + 4], 20, -405537848);
a = getMd5GG(a, b, c, d, x[i + 9], 5, 568446438);
d = getMd5GG(d, a, b, c, x[i + 14], 9, -1019803690);
c = getMd5GG(c, d, a, b, x[i + 3], 14, -187363961);
b = getMd5GG(b, c, d, a, x[i + 8], 20, 1163531501);
a = getMd5GG(a, b, c, d, x[i + 13], 5, -1444681467);
d = getMd5GG(d, a, b, c, x[i + 2], 9, -51403784);
c = getMd5GG(c, d, a, b, x[i + 7], 14, 1735328473);
b = getMd5GG(b, c, d, a, x[i + 12], 20, -1926607734);
a = getMd5HH(a, b, c, d, x[i + 5], 4, -378558);
d = getMd5HH(d, a, b, c, x[i + 8], 11, -2022574463);
c = getMd5HH(c, d, a, b, x[i + 11], 16, 1839030562);
b = getMd5HH(b, c, d, a, x[i + 14], 23, -35309556);
a = getMd5HH(a, b, c, d, x[i + 1], 4, -1530992060);
d = getMd5HH(d, a, b, c, x[i + 4], 11, 1272893353);
c = getMd5HH(c, d, a, b, x[i + 7], 16, -155497632);
b = getMd5HH(b, c, d, a, x[i + 10], 23, -1094730640);
a = getMd5HH(a, b, c, d, x[i + 13], 4, 681279174);
d = getMd5HH(d, a, b, c, x[i + 0], 11, -358537222);
c = getMd5HH(c, d, a, b, x[i + 3], 16, -722521979);
b = getMd5HH(b, c, d, a, x[i + 6], 23, 76029189);
a = getMd5HH(a, b, c, d, x[i + 9], 4, -640364487);
d = getMd5HH(d, a, b, c, x[i + 12], 11, -421815835);
// c = getMd5HH(c, d, a, b, x[i+15], 16, 530742520);
c = getMd5HH(c, d, a, b, 0, 16, 530742520);
b = getMd5HH(b, c, d, a, x[i + 2], 23, -995338651);
a = getMd5II(a, b, c, d, x[i + 0], 6, -198630844);
d = getMd5II(d, a, b, c, x[i + 7], 10, 1126891415);
c = getMd5II(c, d, a, b, x[i + 14], 15, -1416354905);
b = getMd5II(b, c, d, a, x[i + 5], 21, -57434055);
a = getMd5II(a, b, c, d, x[i + 12], 6, 1700485571);
d = getMd5II(d, a, b, c, x[i + 3], 10, -1894986606);
c = getMd5II(c, d, a, b, x[i + 10], 15, -1051523);
b = getMd5II(b, c, d, a, x[i + 1], 21, -2054922799);
a = getMd5II(a, b, c, d, x[i + 8], 6, 1873313359);
// d = getMd5II(d, a, b, c, x[i+15], 10, -30611744);
d = getMd5II(d, a, b, c, 0, 10, -30611744);
c = getMd5II(c, d, a, b, x[i + 6], 15, -1560198380);
b = getMd5II(b, c, d, a, x[i + 13], 21, 1309151649);
a = getMd5II(a, b, c, d, x[i + 4], 6, -145523070);
d = getMd5II(d, a, b, c, x[i + 11], 10, -1120210379);
c = getMd5II(c, d, a, b, x[i + 2], 15, 718787259);
b = getMd5II(b, c, d, a, x[i + 9], 21, -343485551);
long olda = a;
a = UI32Common.getUi32Add(a, olda);
long oldb = b;
b = UI32Common.getUi32Add(b, oldb);
long oldc = c;
c = UI32Common.getUi32Add(c, oldc);
long oldd = d;
d = UI32Common.getUi32Add(d, oldd);
}
long[] tabResult = {a, b, c, d};
return tabResult;
}
/**
* basic operations the algorithm uses.
*
* @param a a
* @param b b
* @param c c
* @param d c
* @param x x
* @param s s
* @param t t
* @return the result MD5Mmn
*/
private static long getMd5Mmn(long q, long a, long b, long x, long s, long t) {
long add32Arg1 = UI32Common.getUi32Add(a, q);
long add32Arg2 = UI32Common.getUi32Add(x, t);
long rolArg1 = UI32Common.getUi32Add(add32Arg1, add32Arg2);
long add32Arg = UI32Common.getUi32Rol(rolArg1, s);
long result = UI32Common.getUi32Add(add32Arg, b);
return result;
}
/**
* getMd5FF.
*
* @param a a
* @param b b
* @param c c
* @param d c
* @param x x
* @param s s
* @param t t
* @return Md5FF
*/
private static long getMd5FF(long a, long b, long c, long d, long x, long s, long t) {
long result = getMd5Mmn((b & c) | ((~b) & d), a, b, x, s, t);
return result;
}
/**
* getMd5GG.
*
* @param a a
* @param b b
* @param c c
* @param d c
* @param x x
* @param s s
* @param t t
* @return Md5GG
*/
private static long getMd5GG(long a, long b, long c, long d, long x, long s, long t) {
return getMd5Mmn((b & d) | (c & (~d)), a, b, x, s, t);
}
/**
* getMd5HH.
*
* @param a a
* @param b b
* @param c c
* @param d c
* @param x x
* @param s s
* @param t t
* @return md5HH
*/
private static long getMd5HH(long a, long b, long c, long d, long x, long s, long t) {
return getMd5Mmn(b ^ c ^ d, a, b, x, s, t);
}
/**
* getMd5II.
*
* @param a a
* @param b b
* @param c c
* @param d c
* @param x x
* @param s s
* @param t t
* @return md5II
*/
private static long getMd5II(long a, long b, long c, long d, long x, long s, long t) {
return getMd5Mmn(c ^ (b | (~d)), a, b, x, s, t);
}
}