package org.geogebra.common.util;
/*
* Copyright 2010 Nicolas Lochet Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is
* distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and limitations under the License.
*/
/**
* MD5sum calculator implementation in GWT
*
* downloaded from
* https://java2s.com/Open-Source/Java/GWT/gwt-util/org/nicocube/
* gwt/util/client/crypt/md5/MD5EncrypterGWTImpl.java.htm
*
* see also
* https://java2s.com/Open-Source/Java/GWT/gwt-util/org/nicocube/gwt/util
* /client/crypt/md5/MD5EncrypterTest.java.htm
* https://java2s.com/Open-Source/Java
* /GWT/gwt-util/org/nicocube/gwt/util/client/
* crypt/md5/MD5EncryptJSNIImpl.java.htm
*
* @author Nicolas Lochet
* @version 0.5
* @since 0.5
*/
public class MD5EncrypterGWTImpl {
public String encrypt(String string0) {
int[] x;
int k, AA, BB, CC, DD, a, b, c, d;
int S11 = 7, S12 = 12, S13 = 17, S14 = 22;
int S21 = 5, S22 = 9, S23 = 14, S24 = 20;
int S31 = 4, S32 = 11, S33 = 16, S34 = 23;
int S41 = 6, S42 = 10, S43 = 15, S44 = 21;
String string = utf8Encode(string0);
x = convertToWordArray(string);
a = 0x67452301;
b = 0xEFCDAB89;
c = 0x98BADCFE;
d = 0x10325476;
for (k = 0; k < x.length; k += 16) {
AA = a;
BB = b;
CC = c;
DD = d;
a = FF(a, b, c, d, x[k + 0], S11, 0xD76AA478);
d = FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756);
c = FF(c, d, a, b, x[k + 2], S13, 0x242070DB);
b = FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE);
a = FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF);
d = FF(d, a, b, c, x[k + 5], S12, 0x4787C62A);
c = FF(c, d, a, b, x[k + 6], S13, 0xA8304613);
b = FF(b, c, d, a, x[k + 7], S14, 0xFD469501);
a = FF(a, b, c, d, x[k + 8], S11, 0x698098D8);
d = FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF);
c = FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1);
b = FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE);
a = FF(a, b, c, d, x[k + 12], S11, 0x6B901122);
d = FF(d, a, b, c, x[k + 13], S12, 0xFD987193);
c = FF(c, d, a, b, x[k + 14], S13, 0xA679438E);
b = FF(b, c, d, a, x[k + 15], S14, 0x49B40821);
a = GG(a, b, c, d, x[k + 1], S21, 0xF61E2562);
d = GG(d, a, b, c, x[k + 6], S22, 0xC040B340);
c = GG(c, d, a, b, x[k + 11], S23, 0x265E5A51);
b = GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA);
a = GG(a, b, c, d, x[k + 5], S21, 0xD62F105D);
d = GG(d, a, b, c, x[k + 10], S22, 0x2441453);
c = GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681);
b = GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8);
a = GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6);
d = GG(d, a, b, c, x[k + 14], S22, 0xC33707D6);
c = GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87);
b = GG(b, c, d, a, x[k + 8], S24, 0x455A14ED);
a = GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905);
d = GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8);
c = GG(c, d, a, b, x[k + 7], S23, 0x676F02D9);
b = GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A);
a = HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942);
d = HH(d, a, b, c, x[k + 8], S32, 0x8771F681);
c = HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122);
b = HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C);
a = HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44);
d = HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9);
c = HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60);
b = HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70);
a = HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6);
d = HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA);
c = HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085);
b = HH(b, c, d, a, x[k + 6], S34, 0x4881D05);
a = HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039);
d = HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5);
c = HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8);
b = HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665);
a = II(a, b, c, d, x[k + 0], S41, 0xF4292244);
d = II(d, a, b, c, x[k + 7], S42, 0x432AFF97);
c = II(c, d, a, b, x[k + 14], S43, 0xAB9423A7);
b = II(b, c, d, a, x[k + 5], S44, 0xFC93A039);
a = II(a, b, c, d, x[k + 12], S41, 0x655B59C3);
d = II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92);
c = II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D);
b = II(b, c, d, a, x[k + 1], S44, 0x85845DD1);
a = II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F);
d = II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0);
c = II(c, d, a, b, x[k + 6], S43, 0xA3014314);
b = II(b, c, d, a, x[k + 13], S44, 0x4E0811A1);
a = II(a, b, c, d, x[k + 4], S41, 0xF7537E82);
d = II(d, a, b, c, x[k + 11], S42, 0xBD3AF235);
c = II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB);
b = II(b, c, d, a, x[k + 9], S44, 0xEB86D391);
a = addUnsigned(a, AA);
b = addUnsigned(b, BB);
c = addUnsigned(c, CC);
d = addUnsigned(d, DD);
}
String temp = wordToHex(a) + wordToHex(b) + wordToHex(c) + wordToHex(d);
return temp.toLowerCase();
}
public String utf8Encode(String string0) {
String string = string0.replaceAll("\r\n", "\n");
StringBuilder utftext = new StringBuilder();
for (int n = 0; n < string.length(); n++) {
char c = string.charAt(n);
if (c < 128) {
utftext.append(c);
} else if (c < 2048) {
utftext.append((c >> 6) | 192);
utftext.append((c & 63) | 128);
} else {
utftext.append((c >> 12) | 224);
utftext.append(((c >> 6) & 63) | 128);
utftext.append((c & 63) | 128);
}
}
return utftext.toString();
}
private static int[] convertToWordArray(String string) {
int lWordCount;
int lMessageLength = string.length();
int lNumberOfWords_temp1 = lMessageLength + 8;
int lNumberOfWords_temp2 = (lNumberOfWords_temp1
- (lNumberOfWords_temp1 % 64)) / 64;
int lNumberOfWords = (lNumberOfWords_temp2 + 1) * 16;
int[] lWordArray = new int[lNumberOfWords];
int lBytePosition = 0;
int lByteCount = 0;
while (lByteCount < lMessageLength) {
lWordCount = (lByteCount - (lByteCount % 4)) / 4;
lBytePosition = (lByteCount % 4) * 8;
lWordArray[lWordCount] = (lWordArray[lWordCount]
| (string.charAt(lByteCount) << lBytePosition));
lByteCount++;
}
lWordCount = (lByteCount - (lByteCount % 4)) / 4;
lBytePosition = (lByteCount % 4) * 8;
lWordArray[lWordCount] = lWordArray[lWordCount]
| (0x80 << lBytePosition);
lWordArray[lNumberOfWords - 2] = lMessageLength << 3;
lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29;
return lWordArray;
}
public int rotateLeft(int lValue, int iShiftBits) {
return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits));
}
private static int addUnsigned(int lX, int lY) {
int lX4, lY4, lX8, lY8, lResult;
lX8 = (lX & 0x80000000);
lY8 = (lY & 0x80000000);
lX4 = (lX & 0x40000000);
lY4 = (lY & 0x40000000);
lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF);
if ((lX4 & lY4) != 0) {
return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
}
if ((lX4 | lY4) != 0) {
if ((lResult & 0x40000000) != 0) {
return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
}
return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
}
return (lResult ^ lX8 ^ lY8);
}
private static int F(int x, int y, int z) {
return (x & y) | ((~x) & z);
}
private static int G(int x, int y, int z) {
return (x & z) | (y & (~z));
}
private static int H(int x, int y, int z) {
return (x ^ y ^ z);
}
private static int I(int x, int y, int z) {
return (y ^ (x | (~z)));
}
private int FF(int a, int b, int c, int d, int x, int s, int ac) {
int a1 = addUnsigned(a, addUnsigned(addUnsigned(F(b, c, d), x), ac));
return addUnsigned(rotateLeft(a1, s), b);
}
private int GG(int a, int b, int c, int d, int x, int s, int ac) {
int a1 = addUnsigned(a, addUnsigned(addUnsigned(G(b, c, d), x), ac));
return addUnsigned(rotateLeft(a1, s), b);
}
private int HH(int a, int b, int c, int d, int x, int s, int ac) {
int a1 = addUnsigned(a, addUnsigned(addUnsigned(H(b, c, d), x), ac));
return addUnsigned(rotateLeft(a1, s), b);
}
private int II(int a, int b, int c, int d, int x, int s, int ac) {
int a1 = addUnsigned(a, addUnsigned(addUnsigned(I(b, c, d), x), ac));
return addUnsigned(rotateLeft(a1, s), b);
}
private static String wordToHex(int lValue) {
StringBuilder WordToHexValue = new StringBuilder();
String WordToHexValue_temp = "";
int lByte, lCount;
for (lCount = 0; lCount <= 3; lCount++) {
lByte = (lValue >>> (lCount * 8)) & 255;
WordToHexValue_temp = "0" + Integer.toHexString(lByte);
WordToHexValue.append(WordToHexValue + WordToHexValue_temp
.substring(WordToHexValue_temp.length() - 2));
}
return WordToHexValue.toString();
}
}