MD5 clash for famous entry

Question

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

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

(I know this is possible with bruteforcing and waiting for a long time, I want to know if there is a more efficient way to do this)

Answer 1

Unitl algorithm is now not detected, which allows you to find the corresponding input that will generate the given xd5 hash.

It has been proven that you can easily create md5 conflicts, for example, with the so-called select-prefix-collision: you can create two files giving the same md5 hash code by adding different data to the specified file. If you want to know more or try the program, look here .