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## lecture: How to reverese CRCs

When revere engineering protocols one common problem are unknown checksum algorithms. It is easy to test some known approaches, but sometimes even the brute-force attempts fail. Then it's time to use some math to actually reverse the checksum.

Don't worry, the math is not very complex, and we've got computers to do it for you. I'll explain the theory, give an example from our work on iridium, and will show how to solve it with a computer algebra system (sage).

### Info

**Day:**
2016-03-27

**Start time:**
13:30

**Duration:**
00:45

**Room:**
Vorträge

**Track:**
Sonstiges / Passt nicht in eine Kategorie

**Language:**
en

### Links:

### Concurrent Events

### Speakers

Stefan `Sec` Zehl |