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This commit is contained in:
Chen Yi-Cyuan
2015-01-07 22:36:41 +08:00
parent 7a5649ff78
commit 629a972486
13 changed files with 188 additions and 102 deletions
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src/md2.js
+70 -61
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@@ -1,22 +1,16 @@
/*
* js-md5 v0.1.1
* js-md5 v0.1.2
* https://github.com/emn178/js-md2
*
* Copyright 2014, emn178@gmail.com
* Copyright 2014-2015, emn178@gmail.com
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/MIT
*/
;(function(root, undefined){
;(function(root, undefined) {
'use strict';
var HEX_CHARS = "0123456789abcdef";
var HEX_TABLE = {
'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9,
'a': 10, 'b': 11, 'c': 12, 'd': 13, 'e': 14, 'f': 15,
'A': 10, 'B': 11, 'C': 12, 'D': 13, 'E': 14, 'F': 15
};
var HEX_CHARS = '0123456789abcdef'.split('');
var S = [ 0x29, 0x2E, 0x43, 0xC9, 0xA2, 0xD8, 0x7C, 0x01, 0x3D, 0x36, 0x54, 0xA1, 0xEC, 0xF0, 0x06, 0x13,
0x62, 0xA7, 0x05, 0xF3, 0xC0, 0xC7, 0x73, 0x8C, 0x98, 0x93, 0x2B, 0xD9, 0xBC, 0x4C, 0x82, 0xCA,
@@ -35,99 +29,114 @@
0xF2, 0xEF, 0xB7, 0x0E, 0x66, 0x58, 0xD0, 0xE4, 0xA6, 0x77, 0x72, 0xF8, 0xEB, 0x75, 0x4B, 0x0A,
0x31, 0x44, 0x50, 0xB4, 0x8F, 0xED, 0x1F, 0x1A, 0xDB, 0x99, 0x8D, 0x33, 0x9F, 0x11, 0x83, 0x14];
var md2 = function(message) {
var M = hasUTF8(message) ? UTF8toBlocks(message) : ASCIItoBlocks(message);
var md2 = function(message, asciiOnly) {
var M, X = [], i, j;
if(!asciiOnly && /[^\x00-\x7F]/.test(message)) {
M = getBlocksFromUtf8(message);
} else {
M = getBlocksFromAscii(message);
}
appendChecksum(M);
var X = [];
for(var i = 0;i < 48;++i)
for(i = 0;i < 48;++i) {
X[i] = 0;
var length = M.length >> 4;
for(var i = 0;i < length;++i)
{
for(var j = 0;j < 16;++j)
{
}
var length = M.length >> 4, hex = '';
for(i = 0;i < length;++i) {
for(j = 0;j < 16;++j) {
X[16 + j] = M[(i << 4) + j];
X[32 + j] = X[16 + j] ^ X[j];
}
var t = 0;
for(var j = 0;j < 18;++j)
{
for(var k = 0;k < 48;++k)
for(j = 0;j < 18;++j) {
for(var k = 0;k < 48;++k) {
X[k] = t = X[k] ^ S[t];
}
t = (t + j) & 0xFF;
}
}
var hex = '';
for(var i = 0;i < 16;++i)
hex += HEX_CHARS.charAt((X[i] >> 4) & 0x0F) + HEX_CHARS.charAt(X[i] & 0x0F);
for(i = 0;i < 16;++i) {
hex += HEX_CHARS[(X[i] >> 4) & 0x0F] + HEX_CHARS[X[i] & 0x0F];
}
return hex;
};
var hasUTF8 = function(message) {
for(var i = message.length;i--;)
if(message.charCodeAt(i) > 127)
return true;
return false;
var getBytesFromUtf8 = function(str) {
var bytes = [], index = 0;
for (var i = 0;i < str.length; i++) {
var c = str.charCodeAt(i);
if (c < 0x80) {
bytes[index++] = c;
} else if (c < 0x800) {
bytes[index++] = 0xc0 | (c >> 6);
bytes[index++] = 0x80 | (c & 0x3f);
} else if (c < 0xd800 || c >= 0xe000) {
bytes[index++] = 0xe0 | (c >> 12);
bytes[index++] = 0x80 | ((c >> 6) & 0x3f);
bytes[index++] = 0x80 | (c & 0x3f);
} else {
c = 0x10000 + (((c & 0x3ff) << 10) | (str.charCodeAt(++i) & 0x3ff));
bytes[index++] = 0xf0 | (c >> 18);
bytes[index++] = 0x80 | ((c >> 12) & 0x3f);
bytes[index++] = 0x80 | ((c >> 6) & 0x3f);
bytes[index++] = 0x80 | (c & 0x3f);
}
}
return bytes;
};
var ASCIItoBlocks = function(message) {
var getBlocksFromAscii = function(message) {
// a block is 8 bits(1 bytes), a chunk is 128 bits(16 bytes)
var length = message.length;
var chunkCount = (length >> 4) + 1;
var blockCount = chunkCount << 4; // chunkCount * 16
var blocks = [];
var i;
for(i = 0;i < length;++i)
var blocks = [], i;
for(i = 0;i < length;++i) {
blocks[i] = message.charCodeAt(i);
}
var ibit = 16 - (length & 15);
for(;i < blockCount;++i)
for(;i < blockCount;++i) {
blocks[i] = ibit;
}
return blocks;
};
var UTF8toBlocks = function(message) {
var uri = encodeURIComponent(message);
var blocks = [];
for(var i = 0, bytes = 0, length = uri.length;i < length;++i)
{
var c = uri.charCodeAt(i);
if(c == 37) // %
blocks[bytes] = (HEX_TABLE[uri.charAt(++i)] << 4) | HEX_TABLE[uri.charAt(++i)];
else
blocks[bytes] = c;
++bytes;
var getBlocksFromUtf8 = function(message) {
// a block is 8 bits(1 bytes), a chunk is 128 bits(16 bytes)
var bytes = getBytesFromUtf8(message);
var length = bytes.length;
var chunkCount = (length >> 4) + 1;
var blockCount = chunkCount << 4; // chunkCount * 16
var blocks = [], i;
for(i = 0;i < length;++i) {
blocks[i] = bytes[i];
}
var chunkCount = (bytes >> 4) + 1;
var blockCount = chunkCount << 4; // chunkCount * 4
var ibit = 16 - (bytes & 15);
for(var i = bytes;i < blockCount;++i)
var ibit = 16 - (length & 15);
for(;i < blockCount;++i) {
blocks[i] = ibit;
}
return blocks;
};
var appendChecksum = function(M) {
var checksum = [];
var L = 0;
var length = M.length >> 4;
for(var i = 0;i < length;++i)
{
for(var j = 0;j < 16;++j)
{
var checksum = [], L = 0, length = M.length >> 4, i;
for(i = 0;i < length;++i) {
for(var j = 0;j < 16;++j) {
var c = M[(i << 4) + j];
checksum[j] ^= S[c ^ L];
L = checksum[j];
}
}
length = M.length;
for(var i = 0;i < 16;++i)
for(i = 0;i < 16;++i) {
M[length + i] = checksum[i];
}
};
if(typeof(module) != 'undefined')
if(typeof(module) != 'undefined') {
module.exports = md2;
else if(root)
} else if(root) {
root.md2 = md2;
}
}(this));