WEP key conversion algorithm (passphase <-> [128 bit] key) ?

Discussion in 'Linux Networking' started by Erik H., Jan 8, 2005.

  1. Erik H.

    Erik H. Guest


    While everything works fine with Linux it looks like the
    input masks for WEP keys in Win* depend on the manufacturer of
    the WLAN device/driver.
    I got one dialog where I cannot enter the 26 digits for a
    hex key (only 24 digits are possible).
    Luckily there is some kind of assistent tool to copy existing
    WLAN configurations from other devices/drivers, so I first
    do it for another device and afterwards copy the configuration.
    In the 'broken' input mask it looks like the
    key is very short (10 or 11 digits -> passphase 'coding' ?).

    I'm looking for a tool (nwepgen?) and/or some documentation that describes
    the different formats( and how to convert them).
    Are those different formats (and the conversion) part of any
    802.11 standard [haven't found anything using google, is it
    available for free to the public?] ?

    Erik H., Jan 8, 2005
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  2. 64(40) bit ascii to hex keys seem to be fairly standard. But 128(104) bit
    ascii to hex conversion is not. For example nwepgen can generate the same
    64-bit key as my WAP11, but 128-bit key from a string would not match what
    Linksys generates.

    Since ascii to hex key conversion varies with device brands, it is best to
    use actual hex keys anyway, which can be more random and harder to guess
    than a password/passphrase.
    David Efflandt, Jan 9, 2005
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