1.该脚本功能是实现对Html代码进行加密与解密， 注意表单及其各元素对象的名称，都要与Js定义的相符！
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>It365cn.com</title> <style type="text/css"> <!-- .coolalpha {behavior:url(eyun_alpha.htc);cursor:hand;filter:alpha(opacity=50);} --> </style> </head> <body leftmargin="0" topmargin="0"> <SCRIPT language=JavaScript><!-- var i=0; var ie=(document.all)?1:0; var ns=(document.layers)?1:0; function initStyleElements() /* Styles for Buttons Init */ { var c = document.pad; if (ie) { //c.text.style.backgroundColor="#DDDDDD"; c.compileIt.style.backgroundColor="#C0C0A8"; c.compileIt.style.cursor="hand"; c.select.style.backgroundColor="#C0C0A8"; c.select.style.cursor="hand"; c.view.style.backgroundColor="#C0C0A8"; c.view.style.cursor="hand"; c.retur.style.backgroundColor="#C0C0A8"; c.retur.style.cursor="hand"; c.clear.style.backgroundColor="#C0C0A8"; c.clear.style.cursor="hand"; } else return; } /* Buttons Enlightment of "Compilation" panel */ function FocusOn(what) { if (ie) what.style.backgroundColor = '#EBEBEB'; else return; } function FocusOff(what) { if (ie) what.style.backgroundColor = '#DDDDDD'; else return; } /* Buttons Enlightment of "Compilation" panel */ function generate() /* Generation of "Compilation" */ { code = document.pad.text.value; if (code) { document.pad.text.value='Compiling...Please wait!'; setTimeout("compile()",1000); } else alert('First enter something to compile and then press CompileIt') } function compile() /* The "Compilation" */ { document.pad.text.value=''; compilation=escape(code); document.pad.text.value="<script>\n<!--\ndocument.write(unescape(\""+compilation+"\"));\n//-->\n<\/script>"; i++; if (i=1) alert("Page compiled 1 time!"); else alert("Page compiled "+i+" times!"); } function selectCode() /* Selecting "Compilation" for Copying */ { if(document.pad.text.value.length>0) { document.pad.text.focus(); document.pad.text.select(); } else alert('Nothing for be selected!') } function preview() /* Preview for the "Compilation" */ { if(document.pad.text.value.length>0) { pr=window.open("","Preview","scrollbars=1,menubar=1,status=1,width=700,height=320,left=50,top=110"); pr.document.write(document.pad.text.value); } else alert('Nothing for be previewed!') } function uncompile() /* Decompiling a "Compilation" */ { if (document.pad.text.value.length>0) { source=unescape(document.pad.text.value); document.pad.text.value=""+source+""; } else alert('You need compiled code to uncompile it!') } // --> </SCRIPT> <table width="650" border="0" cellpadding="0" cellspacing="0"> <tr> <td bgcolor="#3568AC"></td> <td width="87" height="1"></td> <td width="460" height="1" bgcolor="#3568AC"></td> <td width="100" height="1"></td> <td bgcolor="#3568AC"></td> </tr> <tr> <td bgcolor="#3568AC" height="6"></td> <td height="8" colspan="3" class="cn"></td> <td bgcolor="#3568AC" height="6"></td> </tr> <tr> <td bgcolor="#3568AC"></td> <td height="296" colspan="3" align="center" class="gp"> <FORM name=pad method=post align="center"> <TEXTAREA name=text rows=11 cols=50></TEXTAREA> <BR><BR> <INPUT onclick=generate() type=button value=加密 name=compileIt> <INPUT onclick=selectCode() type=button value=全选 name=select> <INPUT onclick=preview() type=button value=预览 name=view> <INPUT onclick=uncompile() type=button value=解密 name=retur> <INPUT type=reset value=清除 name=clear></FORM> </td> <td bgcolor="#3568AC"></td> </tr> <tr> <td bgcolor="#3568AC" height="6"></td> <td height="8" colspan="3" class="cn"></td> <td bgcolor="#3568AC" height="6"></td> </tr> <tr> <td bgcolor="#3568AC"></td> <td colspan="3" align="center"> <input type="button" name="Submit2" value="关闭窗口" onclick="window.close()" style="cursor:hand" onFocus="if(this.blur)this.blur()"> </td> <td bgcolor="#3568AC"></td> </tr> <tr> <td bgcolor="#3568AC" height="6"></td> <td height="8" colspan="3" class="cn"></td> <td bgcolor="#3568AC" height="6"></td> </tr> </table> </body> </html> [提示：你可先修改部分代码，再按运行]
2.escape()函数加密文本解密
有一种加密的办法是采用javascript的escape()函数，把某些符号、汉字等变成乱码，以达到迷惑人的目的。解密这种代码的办法是采用其反函数加以还原。下面是一个经过加密的例子：<BR> <font color=red> %3Chtml%3E%3Cbody%20bgcolor%3D%22white%22%3E%3Cp%3E%u8FD9%u662F%u4F8B%u5B50%uFF01%uFF01%uFF1A%uFF09%3C/p%3E%3C/body%3E%3C/html%3E</font><BR> 这种文件最好解密，一看就明白，关键是unescape()函数起了还原源代码的作用。要想看到加密前的代码是什么样子，可以用下面的办法(把红的字符复制到文本框中，然后解密就可以看到真相了)： <SCRIPT LANGUAGE="Javascript"> var Words ="%3Chtml%3E%3Cbody%20bgcolor%3D%22white%22%3E%3Cp%3E%u8FD9%u662F%u4F8B%u5B50%uFF01%uFF01%uFF1A%uFF09%3C/p%3E%3C/body%3E%3C/html%3E" var NewWords; NewWords = unescape(Words); NewWords=NewWords.toString(); function password(){ document.pw.txtpw.value=NewWords; } </SCRIPT> <form name=pw> <input type=button onclick="password()" value="解密"> <br> <textarea name="txtpw" cols="80" rows="20"></textarea> </form> [提示：你可先修改部分代码，再按运行]
3，Ecode解码器 [色眯眯的小疯狗原创]
<html> <head></head> <body> <script language="JScript"> var STATE_COPY_INPUT = 100 var STATE_READLEN = 101 var STATE_DECODE = 102 var STATE_UNESCAPE = 103 var pick_encoding = new Array( 1, 2, 0, 1, 2, 0, 2, 0, 0, 2, 0, 2, 1, 0, 2, 0, 1, 0, 2, 0, 1, 1, 2, 0, 0, 2, 1, 0, 2, 0, 0, 2, 1, 1, 0, 2, 0, 2, 0, 1, 0, 1, 1, 2, 0, 1, 0, 2, 1, 0, 2, 0, 1, 1, 2, 0, 0, 1, 1, 2, 0, 1, 0, 2 ) var rawData = new Array( 0x64,0x37,0x69, 0x50,0x7E,0x2C, 0x22,0x5A,0x65, 0x4A,0x45,0x72, 0x61,0x3A,0x5B, 0x5E,0x79,0x66, 0x5D,0x59,0x75, 0x5B,0x27,0x4C, 0x42,0x76,0x45, 0x60,0x63,0x76, 0x23,0x62,0x2A, 0x65,0x4D,0x43, 0x5F,0x51,0x33, 0x7E,0x53,0x42, 0x4F,0x52,0x20, 0x52,0x20,0x63, 0x7A,0x26,0x4A, 0x21,0x54,0x5A, 0x46,0x71,0x38, 0x20,0x2B,0x79, 0x26,0x66,0x32, 0x63,0x2A,0x57, 0x2A,0x58,0x6C, 0x76,0x7F,0x2B, 0x47,0x7B,0x46, 0x25,0x30,0x52, 0x2C,0x31,0x4F, 0x29,0x6C,0x3D, 0x69,0x49,0x70, 0x3F,0x3F,0x3F, 0x27,0x78,0x7B, 0x3F,0x3F,0x3F, 0x67,0x5F,0x51, 0x3F,0x3F,0x3F, 0x62,0x29,0x7A, 0x41,0x24,0x7E, 0x5A,0x2F,0x3B, 0x66,0x39,0x47, 0x32,0x33,0x41, 0x73,0x6F,0x77, 0x4D,0x21,0x56, 0x43,0x75,0x5F, 0x71,0x28,0x26, 0x39,0x42,0x78, 0x7C,0x46,0x6E, 0x53,0x4A,0x64, 0x48,0x5C,0x74, 0x31,0x48,0x67, 0x72,0x36,0x7D, 0x6E,0x4B,0x68, 0x70,0x7D,0x35, 0x49,0x5D,0x22, 0x3F,0x6A,0x55, 0x4B,0x50,0x3A, 0x6A,0x69,0x60, 0x2E,0x23,0x6A, 0x7F,0x09,0x71, 0x28,0x70,0x6F, 0x35,0x65,0x49, 0x7D,0x74,0x5C, 0x24,0x2C,0x5D, 0x2D,0x77,0x27, 0x54,0x44,0x59, 0x37,0x3F,0x25, 0x7B,0x6D,0x7C, 0x3D,0x7C,0x23, 0x6C,0x43,0x6D, 0x34,0x38,0x28, 0x6D,0x5E,0x31, 0x4E,0x5B,0x39, 0x2B,0x6E,0x7F, 0x30,0x57,0x36, 0x6F,0x4C,0x54, 0x74,0x34,0x34, 0x6B,0x72,0x62, 0x4C,0x25,0x4E, 0x33,0x56,0x30, 0x56,0x73,0x5E, 0x3A,0x68,0x73, 0x78,0x55,0x09, 0x57,0x47,0x4B, 0x77,0x32,0x61, 0x3B,0x35,0x24, 0x44,0x2E,0x4D, 0x2F,0x64,0x6B, 0x59,0x4F,0x44, 0x45,0x3B,0x21, 0x5C,0x2D,0x37, 0x68,0x41,0x53, 0x36,0x61,0x58, 0x58,0x7A,0x48, 0x79,0x22,0x2E, 0x09,0x60,0x50, 0x75,0x6B,0x2D, 0x38,0x4E,0x29, 0x55,0x3D,0x3F ) var transformed = new Array() for (var i=0; i<3; i++) transformed[i] = new Array() for (var i=31; i<=126; i++) for (var j=0; j<3; j++) transformed[j][rawData[(i-31) * 3 + j]] = (i==31) ? 9 : i var digits = new Array() for (var i=0; i<26; i++) { digits["A".charCodeAt(0)+i] = i digits["a".charCodeAt(0)+i] = i+26 } for (var i=0; i<10; i++) digits["0".charCodeAt(0)+i] = i+52 digits[0x2b] = 62 digits[0x2f] = 63 function unescape(char) { var escapes = "#&!*$" var escaped = "\r\n<>@" if (char.charCodeAt(0) > 126) return char if (escapes.indexOf(char) != -1) return escaped.substr(escapes.indexOf(char), 1) return "?" } function decodeBase64(string) { var val = 0 val += (digits[string.substr(0,1).charCodeAt(0)] << 2) val += (digits[string.substr(1,1).charCodeAt(0)] >> 4) val += (digits[string.substr(1,1).charCodeAt(0)] & 0xf) << 12 val += ((digits[string.substr(2,1).charCodeAt(0)] >> 2) << 8) val += ((digits[string.substr(2,1).charCodeAt(0)] & 0x3) << 22) val += (digits[string.substr(3,1).charCodeAt(0)] << 16) return val } function strdec(encodingString) { var marker = "#@~^" var stringIndex = 0 var scriptIndex = -1 var unEncodingIndex = 0 var char = null var encodingLength = unEncodinglength = 0 var state = STATE_COPY_INPUT var unEncodingString = "" var re, arr while(state) { switch (state) { case (STATE_COPY_INPUT) : scriptIndex = encodingString.indexOf(marker, stringIndex) if (scriptIndex != -1) { unEncodingString += encodingString.substring(stringIndex, scriptIndex) scriptIndex += marker.length state = STATE_READLEN } else { stringIndex = stringIndex==0 ? 0 : stringIndex unEncodingString += encodingString.substr(stringIndex, encodingString.length) state = 0 } break case (STATE_READLEN) : encodingLength = encodingString.substr(scriptIndex, 6) unEncodinglength = decodeBase64(encodingLength) scriptIndex += (6 + "==".length) state = STATE_DECODE break case (STATE_DECODE) : if (!unEncodinglength) { stringIndex = scriptIndex + "DQgAAA==^#~@".length unEncodingIndex = 0 state = STATE_COPY_INPUT break } char = encodingString.substr(scriptIndex, 1) if (char == "@") state = STATE_UNESCAPE else { if (char.charCodeAt(0) < 0xFF) { unEncodingString += String.fromCharCode(transformed[pick_encoding[unEncodingIndex%64]][char.charCodeAt(0)]) unEncodingIndex++ } else { unEncodingString += char } scriptIndex++ unEncodinglength-- break } case STATE_UNESCAPE: unEncodingString += unescape(encodingString.substr(++scriptIndex, 1)) scriptIndex++; unEncodinglength -=2 unEncodingIndex++ state = STATE_DECODE break } } re = new RegExp("(JScript|VBscript).encode", "gmi") while(arr = re.exec(unEncodingString)) unEncodingString = RegExp.leftContext + RegExp.$1 + RegExp.rightContext return unEncodingString } </script> <textarea rows=10 cols=50 id=encodeHTML> <html> <head></head> <body> <script language="JScript.Encode">#@~^JAAAAA==@#@&b$;fAsM_qxFSt16n5IjP`.o啊噢e}@#@&DQgAAA==^#~@</script> <script language="JScript.Encode">#@~^JAAAAA==@#@&b$;fAsM_qxFSt16n5IjP`.o啊噢e}@#@&DQgAAA==^#~@</script> </body> </html> </textarea> <button onclick="encodeHTML.innerText=strdec(encodeHTML.innerText)">解密</botton> </body> </html> [提示：你可先修改部分代码，再按运行]
<SCRIPT LANGUAGE="JavaScript"> <!-- Begin function encrypt(str, pwd) { if(pwd == null || pwd.length <= 0) { alert("Please enter a password with which to encrypt the message."); return null; } var prand = ""; for(var i=0; i<pwd.length; i++) { prand += pwd.charCodeAt(i).toString(); } var sPos = Math.floor(prand.length / 5); var mult = parseInt(prand.charAt(sPos) + prand.charAt(sPos*2) + prand.charAt(sPos*3) + prand.charAt(sPos*4) + prand.charAt(sPos*5)); var incr = Math.ceil(pwd.length / 2); var modu = Math.pow(2, 31) - 1; if(mult < 2) { alert("Algorithm cannot find a suitable hash. Please choose a different password. \nPossible considerations are to choose a more complex or longer password."); return null; } var salt = Math.round(Math.random() * 1000000000) % 100000000; prand += salt; while(prand.length > 10) { prand = (parseInt(prand.substring(0, 10)) + parseInt(prand.substring(10, prand.length))).toString(); } prand = (mult * prand + incr) % modu; var enc_chr = ""; var enc_str = ""; for(var i=0; i<str.length; i++) { enc_chr = parseInt(str.charCodeAt(i) ^ Math.floor((prand / modu) * 255)); if(enc_chr < 16) { enc_str += "0" + enc_chr.toString(16); } else enc_str += enc_chr.toString(16); prand = (mult * prand + incr) % modu; } salt = salt.toString(16); while(salt.length < 8)salt = "0" + salt; enc_str += salt; return enc_str; } function decrypt(str, pwd) { if(str == null || str.length < 8) { alert("A salt value could not be extracted from the encrypted message because it's length is too short. The message cannot be decrypted."); return; } if(pwd == null || pwd.length <= 0) { alert("Please enter a password with which to decrypt the message."); return; } var prand = ""; for(var i=0; i<pwd.length; i++) { prand += pwd.charCodeAt(i).toString(); } var sPos = Math.floor(prand.length / 5); var mult = parseInt(prand.charAt(sPos) + prand.charAt(sPos*2) + prand.charAt(sPos*3) + prand.charAt(sPos*4) + prand.charAt(sPos*5)); var incr = Math.round(pwd.length / 2); var modu = Math.pow(2, 31) - 1; var salt = parseInt(str.substring(str.length - 8, str.length), 16); str = str.substring(0, str.length - 8); prand += salt; while(prand.length > 10) { prand = (parseInt(prand.substring(0, 10)) + parseInt(prand.substring(10, prand.length))).toString(); } prand = (mult * prand + incr) % modu; var enc_chr = ""; var enc_str = ""; for(var i=0; i<str.length; i+=2) { enc_chr = parseInt(parseInt(str.substring(i, i+2), 16) ^ Math.floor((prand / modu) * 255)); enc_str += String.fromCharCode(enc_chr); prand = (mult * prand + incr) % modu; } return enc_str; } // End --> </script> <form name="box"><center> <table cellpadding=0 cellspacing=0 border=0><tr><td colspan=3> <textarea cols=40 rows=5 wrap=virtual name=ipt>Welcome to jzzy.com</textarea> </td></tr> <tr height=50><td valign="top"> <input type="button" onclick="document.box.opt.value= encrypt(document.box.ipt.value, document.box.pwd.value);" value="加密"> </td><td align="center" valign="center"> <input type="text" name="pwd" value="password"> </td><td align="right" valign="bottom"> <input type="button" onclick="document.box.ipt.value= decrypt(document.box.opt.value, document.box.pwd.value);" value="解密"> </td></tr> <tr><td colspan=3> <textarea cols=40 rows=5 wrap=virtual name=opt></textarea> </td></tr></table> </center> </form> [提示：你可先修改部分代码，再按运行]
5，Base64编码加密 javascript
<script language=javascript> var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; var base64DecodeChars = new Array( -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1); function base64encode(str) { var out, i, len; var c1, c2, c3; len = str.length; i = 0; out = ""; while(i < len) { c1 = str.charCodeAt(i++) & 0xff; if(i == len) { out += base64EncodeChars.charAt(c1 >> 2); out += base64EncodeChars.charAt((c1 & 0x3) << 4); out += "=="; break; } c2 = str.charCodeAt(i++); if(i == len) { out += base64EncodeChars.charAt(c1 >> 2); out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4)); out += base64EncodeChars.charAt((c2 & 0xF) << 2); out += "="; break; } c3 = str.charCodeAt(i++); out += base64EncodeChars.charAt(c1 >> 2); out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4)); out += base64EncodeChars.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6)); out += base64EncodeChars.charAt(c3 & 0x3F); } return out; } function base64decode(str) { var c1, c2, c3, c4; var i, len, out; len = str.length; i = 0; out = ""; while(i < len) { /* c1 */ do { c1 = base64DecodeChars[str.charCodeAt(i++) & 0xff]; } while(i < len && c1 == -1); if(c1 == -1) break; /* c2 */ do { c2 = base64DecodeChars[str.charCodeAt(i++) & 0xff]; } while(i < len && c2 == -1); if(c2 == -1) break; out += String.fromCharCode((c1 << 2) | ((c2 & 0x30) >> 4)); /* c3 */ do { c3 = str.charCodeAt(i++) & 0xff; if(c3 == 61) return out; c3 = base64DecodeChars[c3]; } while(i < len && c3 == -1); if(c3 == -1) break; out += String.fromCharCode(((c2 & 0XF) << 4) | ((c3 & 0x3C) >> 2)); /* c4 */ do { c4 = str.charCodeAt(i++) & 0xff; if(c4 == 61) return out; c4 = base64DecodeChars[c4]; } while(i < len && c4 == -1); if(c4 == -1) break; out += String.fromCharCode(((c3 & 0x03) << 6) | c4); } return out; } function utf16to8(str) { var out, i, len, c; out = ""; len = str.length; for(i = 0; i < len; i++) { c = str.charCodeAt(i); if ((c >= 0x0001) && (c <= 0x007F)) { out += str.charAt(i); } else if (c > 0x07FF) { out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F)); out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F)); out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F)); } else { out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F)); out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F)); } } return out; } function utf8to16(str) { var out, i, len, c; var char2, char3; out = ""; len = str.length; i = 0; while(i < len) { c = str.charCodeAt(i++); switch(c >> 4) { case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: // 0xxxxxxx out += str.charAt(i-1); break; case 12: case 13: // 110x xxxx 10xx xxxx char2 = str.charCodeAt(i++); out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F)); break; case 14: // 1110 xxxx 10xx xxxx 10xx xxxx char2 = str.charCodeAt(i++); char3 = str.charCodeAt(i++); out += String.fromCharCode(((c & 0x0F) << 12) | ((char2 & 0x3F) << 6) | ((char3 & 0x3F) << 0)); break; } } return out; } function doit() { var f = document.f f.output.value = base64encode(utf16to8(f.source.value)) f.decode.value = utf8to16(base64decode(f.output.value)) } </script> <H1>Base64</H1> <FORM NAME="f"> 原码<BR> <TEXTAREA NAME="source" ROWS=4 COLS=60 WRAP="soft"></TEXTAREA><BR><BR> Base64 encode<BR> <TEXTAREA NAME="output" ROWS=4 COLS=60 WRAP="soft"></TEXTAREA><BR><BR> Base64 decode<BR> <TEXTAREA NAME="decode" ROWS=4 COLS=60 WRAP="soft"></TEXTAREA><BR><BR> <INPUT TYPE=BUTTON VALUE="转换" ONCLICK="doit()"> </FORM> [提示：你可先修改部分代码，再按运行]
<input id=test value=sina> <input type=button value=md5 onclick="ye.value=hex_md5(test.value)"> <p> <textarea style="font-family:fixedsys;font-size:12px;border:1px inset #d3d6d9" cols=40 rows=10 id=ye></textarea> <script> var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */ var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */ var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode */ /* * These are the functions you'll usually want to call * They take string arguments and return either hex or base-64 encoded strings */ function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));} function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));} function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); } function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); } /* Backwards compatibility - same as hex_md5() */ function calcMD5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));} /* * Perform a simple self-test to see if the VM is working */ function md5_vm_test() { return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72"; } /* * Calculate the MD5 of an array of little-endian words, and a bit length */ function core_md5(x, len) { /* append padding */ x[len >> 5] |= 0x80 << ((len) % 32); x[(((len + 64) >>> 9) << 4) + 14] = len; var a = 1732584193; var b = -271733879; var c = -1732584194; var d = 271733878; for(var i = 0; i < x.length; i += 16) { var olda = a; var oldb = b; var oldc = c; var oldd = d; a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936); d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586); c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819); b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330); a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897); d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426); c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341); b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983); a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416); d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417); c = md5_ff(c, d, a, b, x[i+10], 17, -42063); b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162); a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682); d = md5_ff(d, a, b, c, x[i+13], 12, -40341101); c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290); b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329); a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510); d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632); c = md5_gg(c, d, a, b, x[i+11], 14, 643717713); b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302); a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691); d = md5_gg(d, a, b, c, x[i+10], 9 , 38016083); c = md5_gg(c, d, a, b, x[i+15], 14, -660478335); b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848); a = md5_gg(a, b, c, d, x[i+ 9], 5 , 568446438); d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690); c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961); b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501); a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467); d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784); c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473); b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734); a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558); d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463); c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562); b = md5_hh(b, c, d, a, x[i+14], 23, -35309556); a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060); d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353); c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632); b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640); a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174); d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222); c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979); b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189); a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487); d = md5_hh(d, a, b, c, x[i+12], 11, -421815835); c = md5_hh(c, d, a, b, x[i+15], 16, 530742520); b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651); a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844); d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415); c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905); b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055); a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571); d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606); c = md5_ii(c, d, a, b, x[i+10], 15, -1051523); b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799); a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359); d = md5_ii(d, a, b, c, x[i+15], 10, -30611744); c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380); b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649); a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070); d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379); c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259); b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551); a = safe_add(a, olda); b = safe_add(b, oldb); c = safe_add(c, oldc); d = safe_add(d, oldd); } return Array(a, b, c, d); } /* * These functions implement the four basic operations the algorithm uses. */ function md5_cmn(q, a, b, x, s, t) { return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b); } function md5_ff(a, b, c, d, x, s, t) { return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t); } function md5_gg(a, b, c, d, x, s, t) { return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t); } function md5_hh(a, b, c, d, x, s, t) { return md5_cmn(b ^ c ^ d, a, b, x, s, t); } function md5_ii(a, b, c, d, x, s, t) { return md5_cmn(c ^ (b | (~d)), a, b, x, s, t); } /* * Calculate the HMAC-MD5, of a key and some data */ function core_hmac_md5(key, data) { var bkey = str2binl(key); if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz); var ipad = Array(16), opad = Array(16); for(var i = 0; i < 16; i++) { ipad[i] = bkey[i] ^ 0x36363636; opad[i] = bkey[i] ^ 0x5C5C5C5C; } var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz); return core_md5(opad.concat(hash), 512 + 128); } /* * Add integers, wrapping at 2^32. This uses 16-bit operations internally * to work around bugs in some JS interpreters. */ function safe_add(x, y) { var lsw = (x & 0xFFFF) + (y & 0xFFFF); var msw = (x >> 16) + (y >> 16) + (lsw >> 16); return (msw << 16) | (lsw & 0xFFFF); } /* * Bitwise rotate a 32-bit number to the left. */ function bit_rol(num, cnt) { return (num << cnt) | (num >>> (32 - cnt)); } /* * Convert a string to an array of little-endian words * If chrsz is ASCII, characters >255 have their hi-byte silently ignored. */ function str2binl(str) { var bin = Array(); var mask = (1 << chrsz) - 1; for(var i = 0; i < str.length * chrsz; i += chrsz) bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32); return bin; } /* * Convert an array of little-endian words to a hex string. */ function binl2hex(binarray) { var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef"; var str = ""; for(var i = 0; i < binarray.length * 4; i++) { str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) + hex_tab.charAt((binarray[i>>2] >> ((i%4)*8 )) & 0xF); } return str; } /* * Convert an array of little-endian words to a base-64 string */ function binl2b64(binarray) { var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; var str = ""; for(var i = 0; i < binarray.length * 4; i += 3) { var triplet = (((binarray[i >> 2] >> 8 * ( i %4)) & 0xFF) << 16) | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 ) | ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF); for(var j = 0; j < 4; j++) { if(i * 8 + j * 6 > binarray.length * 32) str += b64pad; else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F); } } return str; } </script> [提示：你可先修改部分代码，再按运行]
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