md5

beif22

function customMD5(password) {
    // 第一步：两次MD5加密
    let md5_1 = md5(password);
    let md5_2 = md5(md5_1);

    // 第二步：获取前16位和后16位
    let r = md5_2.substr(0, 16);
    let o = md5_2.substr(16);

    // 第三步：反转并拼接
    let l = r.split("").reverse().join("") + o.split("").reverse().join("");

    // 第四步：拼接前三位
    let u = l + l.substr(0, 3);

    // 第五步：再次MD5加密并转小写
    return md5(u).toLowerCase();
}


来个大佬按照这个方法帮我写一个JavaScript，需要能加密能解密，易语言调用

春林

/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
function MD5(data){return CryptoJS.MD5(data);}
var CryptoJS=CryptoJS||(function(Math,undefined){var C={};var C_lib=C.lib={};var Base=C_lib.Base=(function(){function F(){}
return{extend:function(overrides){F.prototype=this;var subtype=new F();if(overrides){subtype.mixIn(overrides);}
if(!subtype.hasOwnProperty('init')){subtype.init=function(){subtype.$super.init.apply(this,arguments);};}
subtype.init.prototype=subtype;subtype.$super=this;return subtype;},create:function(){var instance=this.extend();instance.init.apply(instance,arguments);return instance;},init:function(){},mixIn:function(properties){for(var propertyName in properties){if(properties.hasOwnProperty(propertyName)){this[propertyName]=properties[propertyName];}}
if(properties.hasOwnProperty('toString')){this.toString=properties.toString;}},clone:function(){return this.init.prototype.extend(this);}};}());var WordArray=C_lib.WordArray=Base.extend({init:function(words,sigBytes){words=this.words=words||[];if(sigBytes!=undefined){this.sigBytes=sigBytes;}else{this.sigBytes=words.length*4;}},toString:function(encoder){return(encoder||Hex).stringify(this);},concat:function(wordArray){var thisWords=this.words;var thatWords=wordArray.words;var thisSigBytes=this.sigBytes;var thatSigBytes=wordArray.sigBytes;this.clamp();if(thisSigBytes%4){for(var i=0;i<thatSigBytes;i++){var thatByte=(thatWords[i>>>2]>>>(24-(i%4)*8))&0xff;thisWords[(thisSigBytes+i)>>>2]|=thatByte<<(24-((thisSigBytes+i)%4)*8);}}else if(thatWords.length>0xffff){for(var i=0;i<thatSigBytes;i+=4){thisWords[(thisSigBytes+i)>>>2]=thatWords[i>>>2];}}else{thisWords.push.apply(thisWords,thatWords);}
this.sigBytes+=thatSigBytes;return this;},clamp:function(){var words=this.words;var sigBytes=this.sigBytes;words[sigBytes>>>2]&=0xffffffff<<(32-(sigBytes%4)*8);words.length=Math.ceil(sigBytes/4);},clone:function(){var clone=Base.clone.call(this);clone.words=this.words.slice(0);return clone;},random:function(nBytes){var words=[];for(var i=0;i<nBytes;i+=4){words.push((Math.random()*0x100000000)|0);}
return new WordArray.init(words,nBytes);}});var C_enc=C.enc={};var Hex=C_enc.Hex={stringify:function(wordArray){var words=wordArray.words;var sigBytes=wordArray.sigBytes;var hexChars=[];for(var i=0;i<sigBytes;i++){var bite=(words[i>>>2]>>>(24-(i%4)*8))&0xff;hexChars.push((bite>>>4).toString(16));hexChars.push((bite&0x0f).toString(16));}
return hexChars.join('');},parse:function(hexStr){var hexStrLength=hexStr.length;var words=[];for(var i=0;i<hexStrLength;i+=2){words[i>>>3]|=parseInt(hexStr.substr(i,2),16)<<(24-(i%8)*4);}
return new WordArray.init(words,hexStrLength/2);}};var Latin1=C_enc.Latin1={stringify:function(wordArray){var words=wordArray.words;var sigBytes=wordArray.sigBytes;var latin1Chars=[];for(var i=0;i<sigBytes;i++){var bite=(words[i>>>2]>>>(24-(i%4)*8))&0xff;latin1Chars.push(String.fromCharCode(bite));}
return latin1Chars.join('');},parse:function(latin1Str){var latin1StrLength=latin1Str.length;var words=[];for(var i=0;i<latin1StrLength;i++){words[i>>>2]|=(latin1Str.charCodeAt(i)&0xff)<<(24-(i%4)*8);}
return new WordArray.init(words,latin1StrLength);}};var Utf8=C_enc.Utf8={stringify:function(wordArray){try{return decodeURIComponent(escape(Latin1.stringify(wordArray)));}catch(e){throw new Error('Malformed UTF-8 data');}},parse:function(utf8Str){return Latin1.parse(unescape(encodeURIComponent(utf8Str)));}};var BufferedBlockAlgorithm=C_lib.BufferedBlockAlgorithm=Base.extend({reset:function(){this._data=new WordArray.init();this._nDataBytes=0;},_append:function(data){if(typeof data=='string'){data=Utf8.parse(data);}
this._data.concat(data);this._nDataBytes+=data.sigBytes;},_process:function(doFlush){var data=this._data;var dataWords=data.words;var dataSigBytes=data.sigBytes;var blockSize=this.blockSize;var blockSizeBytes=blockSize*4;var nBlocksReady=dataSigBytes/blockSizeBytes;if(doFlush){nBlocksReady=Math.ceil(nBlocksReady);}else{nBlocksReady=Math.max((nBlocksReady|0)-this._minBufferSize,0);}
var nWordsReady=nBlocksReady*blockSize;var nBytesReady=Math.min(nWordsReady*4,dataSigBytes);if(nWordsReady){for(var offset=0;offset<nWordsReady;offset+=blockSize){this._doProcessBlock(dataWords,offset);}
var processedWords=dataWords.splice(0,nWordsReady);data.sigBytes-=nBytesReady;}
return new WordArray.init(processedWords,nBytesReady);},clone:function(){var clone=Base.clone.call(this);clone._data=this._data.clone();return clone;},_minBufferSize:0});var Hasher=C_lib.Hasher=BufferedBlockAlgorithm.extend({cfg:Base.extend(),init:function(cfg){this.cfg=this.cfg.extend(cfg);this.reset();},reset:function(){BufferedBlockAlgorithm.reset.call(this);this._doReset();},update:function(messageUpdate){this._append(messageUpdate);this._process();return this;},finalize:function(messageUpdate){if(messageUpdate){this._append(messageUpdate);}
var hash=this._doFinalize();return hash;},blockSize:512/32,_createHelper:function(hasher){return function(message,cfg){return new hasher.init(cfg).finalize(message);};},_createHmacHelper:function(hasher){return function(message,key){return new C_algo.HMAC.init(hasher,key).finalize(message);};}});var C_algo=C.algo={};return C;}(Math));(function(Math){var C=CryptoJS;var C_lib=C.lib;var WordArray=C_lib.WordArray;var Hasher=C_lib.Hasher;var C_algo=C.algo;var T=[];(function(){for(var i=0;i<64;i++){T[i]=(Math.abs(Math.sin(i+1))*0x100000000)|0;}}());var MD5=C_algo.MD5=Hasher.extend({_doReset:function(){this._hash=new WordArray.init([0x67452301,0xefcdab89,0x98badcfe,0x10325476]);},_doProcessBlock:function(M,offset){for(var i=0;i<16;i++){var offset_i=offset+i;var M_offset_i=M[offset_i];M[offset_i]=((((M_offset_i<<8)|(M_offset_i>>>24))&0x00ff00ff)|(((M_offset_i<<24)|(M_offset_i>>>8))&0xff00ff00));}
var H=this._hash.words;var M_offset_0=M[offset+0];var M_offset_1=M[offset+1];var M_offset_2=M[offset+2];var M_offset_3=M[offset+3];var M_offset_4=M[offset+4];var M_offset_5=M[offset+5];var M_offset_6=M[offset+6];var M_offset_7=M[offset+7];var M_offset_8=M[offset+8];var M_offset_9=M[offset+9];var M_offset_10=M[offset+10];var M_offset_11=M[offset+11];var M_offset_12=M[offset+12];var M_offset_13=M[offset+13];var M_offset_14=M[offset+14];var M_offset_15=M[offset+15];var a=H[0];var b=H[1];var c=H[2];var d=H[3];a=FF(a,b,c,d,M_offset_0,7,T[0]);d=FF(d,a,b,c,M_offset_1,12,T[1]);c=FF(c,d,a,b,M_offset_2,17,T[2]);b=FF(b,c,d,a,M_offset_3,22,T[3]);a=FF(a,b,c,d,M_offset_4,7,T[4]);d=FF(d,a,b,c,M_offset_5,12,T[5]);c=FF(c,d,a,b,M_offset_6,17,T[6]);b=FF(b,c,d,a,M_offset_7,22,T[7]);a=FF(a,b,c,d,M_offset_8,7,T[8]);d=FF(d,a,b,c,M_offset_9,12,T[9]);c=FF(c,d,a,b,M_offset_10,17,T[10]);b=FF(b,c,d,a,M_offset_11,22,T[11]);a=FF(a,b,c,d,M_offset_12,7,T[12]);d=FF(d,a,b,c,M_offset_13,12,T[13]);c=FF(c,d,a,b,M_offset_14,17,T[14]);b=FF(b,c,d,a,M_offset_15,22,T[15]);a=GG(a,b,c,d,M_offset_1,5,T[16]);d=GG(d,a,b,c,M_offset_6,9,T[17]);c=GG(c,d,a,b,M_offset_11,14,T[18]);b=GG(b,c,d,a,M_offset_0,20,T[19]);a=GG(a,b,c,d,M_offset_5,5,T[20]);d=GG(d,a,b,c,M_offset_10,9,T[21]);c=GG(c,d,a,b,M_offset_15,14,T[22]);b=GG(b,c,d,a,M_offset_4,20,T[23]);a=GG(a,b,c,d,M_offset_9,5,T[24]);d=GG(d,a,b,c,M_offset_14,9,T[25]);c=GG(c,d,a,b,M_offset_3,14,T[26]);b=GG(b,c,d,a,M_offset_8,20,T[27]);a=GG(a,b,c,d,M_offset_13,5,T[28]);d=GG(d,a,b,c,M_offset_2,9,T[29]);c=GG(c,d,a,b,M_offset_7,14,T[30]);b=GG(b,c,d,a,M_offset_12,20,T[31]);a=HH(a,b,c,d,M_offset_5,4,T[32]);d=HH(d,a,b,c,M_offset_8,11,T[33]);c=HH(c,d,a,b,M_offset_11,16,T[34]);b=HH(b,c,d,a,M_offset_14,23,T[35]);a=HH(a,b,c,d,M_offset_1,4,T[36]);d=HH(d,a,b,c,M_offset_4,11,T[37]);c=HH(c,d,a,b,M_offset_7,16,T[38]);b=HH(b,c,d,a,M_offset_10,23,T[39]);a=HH(a,b,c,d,M_offset_13,4,T[40]);d=HH(d,a,b,c,M_offset_0,11,T[41]);c=HH(c,d,a,b,M_offset_3,16,T[42]);b=HH(b,c,d,a,M_offset_6,23,T[43]);a=HH(a,b,c,d,M_offset_9,4,T[44]);d=HH(d,a,b,c,M_offset_12,11,T[45]);c=HH(c,d,a,b,M_offset_15,16,T[46]);b=HH(b,c,d,a,M_offset_2,23,T[47]);a=II(a,b,c,d,M_offset_0,6,T[48]);d=II(d,a,b,c,M_offset_7,10,T[49]);c=II(c,d,a,b,M_offset_14,15,T[50]);b=II(b,c,d,a,M_offset_5,21,T[51]);a=II(a,b,c,d,M_offset_12,6,T[52]);d=II(d,a,b,c,M_offset_3,10,T[53]);c=II(c,d,a,b,M_offset_10,15,T[54]);b=II(b,c,d,a,M_offset_1,21,T[55]);a=II(a,b,c,d,M_offset_8,6,T[56]);d=II(d,a,b,c,M_offset_15,10,T[57]);c=II(c,d,a,b,M_offset_6,15,T[58]);b=II(b,c,d,a,M_offset_13,21,T[59]);a=II(a,b,c,d,M_offset_4,6,T[60]);d=II(d,a,b,c,M_offset_11,10,T[61]);c=II(c,d,a,b,M_offset_2,15,T[62]);b=II(b,c,d,a,M_offset_9,21,T[63]);H[0]=(H[0]+a)|0;H[1]=(H[1]+b)|0;H[2]=(H[2]+c)|0;H[3]=(H[3]+d)|0;},_doFinalize:function(){var data=this._data;var dataWords=data.words;var nBitsTotal=this._nDataBytes*8;var nBitsLeft=data.sigBytes*8;dataWords[nBitsLeft>>>5]|=0x80<<(24-nBitsLeft%32);var nBitsTotalH=Math.floor(nBitsTotal/0x100000000);var nBitsTotalL=nBitsTotal;dataWords[(((nBitsLeft+64)>>>9)<<4)+15]=((((nBitsTotalH<<8)|(nBitsTotalH>>>24))&0x00ff00ff)|(((nBitsTotalH<<24)|(nBitsTotalH>>>8))&0xff00ff00));dataWords[(((nBitsLeft+64)>>>9)<<4)+14]=((((nBitsTotalL<<8)|(nBitsTotalL>>>24))&0x00ff00ff)|(((nBitsTotalL<<24)|(nBitsTotalL>>>8))&0xff00ff00));data.sigBytes=(dataWords.length+1)*4;this._process();var hash=this._hash;var H=hash.words;for(var i=0;i<4;i++){var H_i=H[i];H[i]=(((H_i<<8)|(H_i>>>24))&0x00ff00ff)|(((H_i<<24)|(H_i>>>8))&0xff00ff00);}
return hash;},clone:function(){var clone=Hasher.clone.call(this);clone._hash=this._hash.clone();return clone;}});function FF(a,b,c,d,x,s,t){var n=a+((b&c)|(~b&d))+x+t;return((n<<s)|(n>>>(32-s)))+b;}
function GG(a,b,c,d,x,s,t){var n=a+((b&d)|(c&~d))+x+t;return((n<<s)|(n>>>(32-s)))+b;}
function HH(a,b,c,d,x,s,t){var n=a+(b^c^d)+x+t;return((n<<s)|(n>>>(32-s)))+b;}
function II(a,b,c,d,x,s,t){var n=a+(c^(b|~d))+x+t;return((n<<s)|(n>>>(32-s)))+b;}
C.MD5=Hasher._createHelper(MD5);C.HmacMD5=Hasher._createHmacHelper(MD5);}(Math));

// 定义 customMD5 函数
function customMD5(password) {
    // 确保密码为字符串
    if (typeof password !== 'string') {
        throw new Error('Password must be a string');
    }

    // 第一步：两次MD5加密
    let MD5_1 = MD5(password).toString();
    let MD5_2 = MD5(MD5_1).toString();

    // 第二步：获取前16位和后16位
    let r = MD5_2.substr(0, 16);
    let o = MD5_2.substr(16);

    // 第三步：反转并拼接
    let l = r.split("").reverse().join("") + o.split("").reverse().join("");

    // 第四步：拼接前三位
    let u = l + l.substr(0, 3);

    // 第五步：再次MD5加密并转小写
    return CryptoJS.MD5(u).toString().toLowerCase();
}

fire9

md5不可逆。解密？

beif22

fire9 发表于 2024-8-14 07:25
md5不可逆。解密？

还原

番茄吧

你想还原成 明文password和 md5_1 的话，别想了，如果想还原成最早的 md5_2  是可以的

补充内容 (2024-8-14 08:57):
不对不对，最后边还一次md5呢，那没戏了， md5_2  都别想了

yk125

npm install crypto-js
const CryptoJS = require("crypto-js");  
  
function customMD5(password) {  
    // 第一步：两次MD5加密  
    let md5_1 = CryptoJS.MD5(password.toString(CryptoJS.enc.Utf8)).toString(CryptoJS.enc.Hex);  
    let md5_2 = CryptoJS.MD5(md5_1).toString(CryptoJS.enc.Hex);  
  
    // 第二步：获取前16位和后16位  
    let r = md5_2.substr(0, 16);  
    let o = md5_2.substr(16);  
  
    // 第三步：反转并拼接  
    let l = r.split("").reverse().join("") + o.split("").reverse().join("");  
  
    // 第四步：拼接前三位  
    let u = l + l.substr(0, 3);  
  
    // 第五步：再次MD5加密并转小写  
    let finalMd5 = CryptoJS.MD5(u).toString(CryptoJS.enc.Hex).toLowerCase();  
  
    return finalMd5;  
}  
  
// 示例使用  
console.log(customMD5("myPassword123"));