WEP(wired equivalent privacy) Hacking

cdead2
2 weeks ago

0

I’m a beginner in cybersecurity, I have taken several courses about the basics. My question is: How does a tool like aircrack-ng extract the key just by capturing lots of packets and extracting the Initialization Vector (IV) then it extract the key, I mean what going behind the sense? Is aircrack-ng extracting the packets'IV + Random keys?

The question very clearly is : How aircrack-ng extract the key just by capturing lots of packets IV?

Thanks in advance,

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mortfeus
2 weeks ago | edited 2 weeks ago

1

Im not pro in Wifi tools but here what I understood.
Aircrak is split in 3 tools (16 but we can concentrate on these):
Airmon-ng. It enable monitor mode on wireless interfaces. You can now capture all packets (crypted packets).
Airodump-ng. It sniff and store all packets he will find in .cap files.
Aircrak-ng. With all the packets, he will use an algorithm to guess the WEP key. He dont actually “extract” the key, its a bruteforce algo, he tests all the possibilities. It can work but mostly of the time it fail.

cdead2
2 weeks ago

0

@mortfeus
Thank you for your response , It actually helped me , Another question , Why it should capture lots of packets (IVs) in order to get the key?

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mortfeus
2 weeks ago

1

Because its because of brute force method. You need many many many IV. Some IV are weaker to crack and leak more informations than others and you can actually begin a brute force with only one IV but to hope to have a successful attack it recommended to have 60 000 IV. I personnally dont like brute force like aircrack because its all about luck.

cdead2
2 weeks ago

0

Okay, thank you for helping I appreciate it

mortfeus
2 weeks ago

0

Its to get more chance to crack.

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