I have 2 groups of 4 byte and from this i have to get a key that have 6 byte. Im trying to get the algorithm but i cant in any way. The 1st group have only one bit different from the 2nd one. Idk if i have to extract the 1st or the second key, but i think the 1st one.

1st group 4byte: 0x6339959F
2nd group 4byte: 0x6339959E

1st group keys:


2nd group keys:


i let a another group and relative keys:
group: 0x66CF0824

  • Do you have access to the code which generates these numbers? It’s unlikely you’ll be able to recover the algorithm just from input/output pairs. – Igor Skochinsky Sep 19 '20 at 13:45
  • No, i cant access the code, only one person havbe the algoritm. He said is simple encryption – Gastone Krankenwagen Sep 25 '20 at 11:39
  • I think there should be more hints than “simple encryption”. What is the overall goal? Where’s the data coming from? Is this some challenge or homework? – Igor Skochinsky Sep 26 '20 at 21:38

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.