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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:

0x38A39FE39EF5
0x296A852D73EA

2nd group keys:

0x39BF16EACF1A
0x28760C242205

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

0x92252BCADB80
0x83EC3104369F
  • 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 at 13:45
  • No, i cant access the code, only one person havbe the algoritm. He said is simple encryption – Gastone Krankenwagen Sep 25 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 at 21:38

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