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Thread: Wifi Encryption Method

  1. #1
    Custom User
    Join Date
    Oct 2001

    Wifi Encryption Method

    Hi, I'm not sure if someone else has already asked this (20 days back was as far as I was prepared to look), but does anyone know of any sites with detailed information on an encryption method for use with a wifi network which changes the encrypted key every couple of minutes or something like that, in order to make it more difficult for someone to crack your encrypted key?

    I haven't got a wifi network set up myself (although I did set one up for my uncle, and I realise now that it is not very secure), but I was considering investing in a wireless router. I know that the chances of someone breaking into my network through the wireless connection are very small in my area (a street that leads to a deadend; not on the main road), but I still wouldn't like to set one up if there was a possibility that someone that I did not know could break into my network.

    Any software would have to be multi-platform because I run a couple of pc's on different operating systems, but I guess I was really just asking for some links to info rather than software to help me :P

    Thanks, ac

  2. #2
    I'd rather be fishing DjM's Avatar
    Join Date
    Aug 2001
    The Great White North
    Have a quick look around the net for TKIP . I have done a little reading on this, but not much. It determines which encryption keys will be used and then verifies the client's security configuration. Second, it is responsible for changing the unicast encryption key for each frame or every 10,000 packets.

    TKIP is a quick-fix method to quickly overcome the inherent weaknesses
    in WEP security, especially the reuse of encryption keys. According
    to "802.11 Planet," "The TKIP [security] process begins with a 128-bit
    'temporal key,' [which is] shared among clients and access points.
    TKIP combines the temporal key with the [client machine's] MAC address
    and then adds a relatively large 16-octet initialization vector to
    produce the key that will encrypt the data. This procedure ensures
    that each station uses different key streams to encrypt the data. TKIP
    uses RC4 to perform the encryption, which is the same as WEP. A major
    difference from WEP, however, is that TKIP changes temporal keys every
    10,000 packets. This provides a dynamic distribution method that
    significantly enhances the security of the network."
    This might be something you can use.


  3. #3
    Custom User
    Join Date
    Oct 2001
    Thanks for the reply :P

  4. #4
    Senior Member Maestr0's Avatar
    Join Date
    May 2003
    \"If computers are to become smart enough to design their own successors, initiating a process that will lead to God-like omniscience after a number of ever swifter passages from one generation of computers to the next, someone is going to have to write the software that gets the process going, and humans have given absolutely no evidence of being able to write such software.\" -Jaron Lanier

  5. #5
    Here is a fairly good overview of wifi security. I believe it is about a year old(when I first came accross it, so there may be more recent information from google(WPA is a new one which I do not think is listed).

    Good luck

  6. #6
    @ÞΜĮЙǐЅŦГǻţΩЯ D0pp139an93r's Avatar
    Join Date
    May 2003
    St. Petersburg, FL
    One other thing to think of besides encryption may be MAC filtering, or even just lowering the broadcast power. I believe that can be done on some routers/AP's.

    This is just another thing to do to make the network secure.

    I believe Intel is working on a new wireless encryption scheme....
    Real security doesn't come with an installer.

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