3 ms·
The person doing the spoofing has to create both of the files. You can't take an existing file created by a third party, and then generate a collision against i
by tumult 16y ago
The person doing the spoofing has to create both of the files. You can't take an existing file created by a third party, and then generate a collision against it (yet).
- jozwiakjohn 16y agoSure you can, if you have arbitrarily long but still finite time. (Think recursive versus recursively enumerable sets.)
- lambda 16y agoWhen he says "can't", he doesn't mean it's impossible, he means it's infeasible. There are no techniques for doing it fast enough that anyone has to worry about it being done.