已知输入的MD5冲突 [英] MD5 collision for known input

问题描述

是否可以基于已知的输入值创建MD5冲突?

Is it possible to create a MD5 collision based on a known input value?

因此，例如，我输入了字符串abc和MD5 900150983cd24fb0d6963f7d28e17f72. 现在，我想将字节添加到字符串def以获得相同的MD5 900150983cd24fb0d6963f7d28e17f72.

So for example I have input string abc with MD5 900150983cd24fb0d6963f7d28e17f72. Now I want to add bytes to string def to get the same MD5 900150983cd24fb0d6963f7d28e17f72.

(我知道这可以通过蛮力等待很长时间来实现；我想知道这样做是否有更有效的方法)

(I know this is possible by bruteforcing and waiting a long time; I want to know if there is a more efficient way in doing this)

推荐答案

Unitl现在没有发现可让您找到匹配输入的算法，该输入将生成给定的md5哈希值.

Unitl now no algorithm has been discovered that allows you to find a matching input that will generate a given md5 hash.

已被证明的是，您可以非常轻松地创建md5冲突，例如，使用称为 chosen-prefix-collision 的东西:您可以创建两个文件，通过附加不同的内容来产生相同的md5哈希数据到指定文件.如果您想了解更多信息或让程序尝试使用，请在此处.

What has been proven is that you can create md5 collisions quite easily, for example with what is known as chosen-prefix-collision: you can create two files yielding the same md5 hash by appending different data to a specified file. If you want to know more or get the program to try it, look here.

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