IT Security Stack Exchange
IT Security Stack Exchange

Questions tagged [tkip]

7 questions
5
votes
2 answers

How is TSC (TKIP sequence counter) calculated, in WPA?

I'm reading about 802.11, from IEEE's PDF, from page 1191, and in particularly I'm reading about TKIP. To decrypt and encrypt, you use a TSC (TKIP Sequence Counter) as you can see in these images: How, and from what, is the TSC calculated?
Teo
  • 191
  • 8
5
votes
1 answer

WPA2 and ChopChop attack

I know that WEP is vulnerable to the ChopChop attack. Could the ChopChop attack be carried against WPA2-PSK as well? Some Internet articles suggest this possibility, I want to be sure though.
sasuke_X220
  • 371
  • 3
  • 15
2
votes
1 answer

TKIP key length and initialization vector size

It's not clear to me from reading the wiki if TKIP encryption uses a 128 bit RC4 encryption key and a 48 bit IV, or if the 128 bit is the total, and the actual key size is 128 - 48 = 80 bit.
Juicy
  • 1,407
  • 4
  • 16
  • 31
1
vote
3 answers

Does WPA2 use TKIP or not?

I am writing my master's thesis about WLANs, and there is something what I don't really understand. This may be a dumb question but I didn't find a clear explanation. WPA uses encryption TKIP. WPA2 uses encryption AES. So far so good. What I don't…
kampi
  • 113
  • 3
1
vote
0 answers

Attacking TKIP Group Shared traffic

I am aware of two attacks against TKIP/RC4 encrypted traffic: Beck-Tews attack Ohigashi-Morii attack If I have a network that uses TKIP for the Group Cipher, i.e. multicast and broadcast traffic, TKIP and CCMP for pair-wise traffic i.e. unicast,…
deed02392
  • 4,038
  • 1
  • 18
  • 20
1
vote
0 answers

Is the keystream recovered by tkiptun-ng the same key used to encrypt all data frames between the client and the AP?

Looking at the manual for tkiptun-ng,(http://www.aircrack-ng.org/doku.php?id=tkiptun-ng) The output saves the keystream in the example near the end of the program. Is this the same keystream used to encrypt all the data traffic?(i.e the PTK?) Does…
Lew Wei Hao
  • 429
  • 5
  • 13
0
votes
1 answer

How (un)safe is it to use TKIP?

I have recently bought a wifi range extender to improve the signal coverage through the house. When I set it up, I noticed the iOS 14 recognizes it as unsafe since it uses TKIP and advises to set it up to use AES instead. I did my research and…
Ramin
  • 3
  • 2