The same file is read and calculated using PHP, Python, and Javascript respectively. The results are different. Ask the reason and solution.

The test code and result are as follows: PHP: {code...} Python: {code...} Javascript: {code...} The test code and result are as follows:

PHP:

echo md5(file_get_contents('test.torrent'));//e699b0e7535cebc1b10de1613d6797fb

Python:

print hashlib.md5(open("test.torrent").read()).hexdigest()#7cc752c88ae69677afe59ee7c3300e9d

Javascript:

var dragAndDrop = function(){    if (!window.File || !window.FileList || !window.FileReader) {        return false;    }    var ignoreDrag = function(e) {        e.originalEvent.stopPropagation();        e.originalEvent.preventDefault();    }    var drop = function(e) {        ignoreDrag(e);        var dt = e.originalEvent.dataTransfer;        var droppedFiles = dt.files;        $.each(droppedFiles, function(index, file) {            decodeFile(file);        });    }    $('body')    .on('dragenter', ignoreDrag)    .on('dragover', ignoreDrag)    .on('drop', drop);};var decodeFile = function(file) {    var fileReader = new FileReader();    var fileData = fileReader.readAsBinaryString(file);    fileReader.onload = function(){        var fileData = this.result;        console.log(CryptoJS.MD5(fileData));    }}dragAndDrop(); //393fe44680d69ea00fd0a4a2fb3fa8c5

Reply content:

The test code and result are as follows:

PHP:

echo md5(file_get_contents('test.torrent'));//e699b0e7535cebc1b10de1613d6797fb

Python:

print hashlib.md5(open("test.torrent").read()).hexdigest()#7cc752c88ae69677afe59ee7c3300e9d

Javascript:

var dragAndDrop = function(){    if (!window.File || !window.FileList || !window.FileReader) {        return false;    }    var ignoreDrag = function(e) {        e.originalEvent.stopPropagation();        e.originalEvent.preventDefault();    }    var drop = function(e) {        ignoreDrag(e);        var dt = e.originalEvent.dataTransfer;        var droppedFiles = dt.files;        $.each(droppedFiles, function(index, file) {            decodeFile(file);        });    }    $('body')    .on('dragenter', ignoreDrag)    .on('dragover', ignoreDrag)    .on('drop', drop);};var decodeFile = function(file) {    var fileReader = new FileReader();    var fileData = fileReader.readAsBinaryString(file);    fileReader.onload = function(){        var fileData = this.result;        console.log(CryptoJS.MD5(fileData));    }}dragAndDrop(); //393fe44680d69ea00fd0a4a2fb3fa8c5

Based on the information you added in your comments, it is easy to understand the differences between Python 2 and PHP:

1. In Python 2, use the defaultText modeOpen,WindowsThe API processes some characters, resulting in inconsistent reading data;
2. The correct MD5 value is calculated by PHP.file_get_contentsIs binary safe;

3. The correct Python 2 & 3 code is as follows:

   hashlib.md5(open("test.torrent", 'rb').read()).hexdigest()

4. CryptoJS is a third party. Unable to test because the questioner does not provide it.

I did a test. There are two python methods, one is javascript, and the other is Linux shell Command. the MD5 obtained is the same. PHP is not tested, but I believe it should be the same. Python Method 1:

Import md5m = md5.new ("xxx \ n") print m. hexdigest (): 6de9439834c9147109741d3c9c9fc010

Python Method 2:

Import hashlibh = hashlib. md5 ("xxx \ n") print h. hexdigest () Result: 6de9439834c9147109741d3c9fc010

MD5 of javascript, which I downloaded from: keystore. The result is the same as the preceding one.

Linux shell:

Md5sumxxx press enter and press ctrl + D

The printed result is the same as the preceding one.