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Old 03-28-2005   #1 (permalink)
djrimi
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Decrypting captured WEP packets.
I'm have difficulties with decrypting wep encrypted pcap files with the linux tool Decrypt, it says "Invalid password guess XXXXXX" even when I'm using the right key.

I've ended up looking at the data type offset option ( -o) in decrypt, maybe I have to set a different offset byte, but I don't know.

The pcap file is captured with ethereal and merged with mergecap, if that will help.

Maybe you know a better tool to decrypt wep packets.

Help would be appreciated.

DJRiMi
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Old 03-28-2005   #2 (permalink)
Dutch
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Quote:
Originally Posted by djrimi
I'm have difficulties with decrypting wep encrypted pcap files with the linux tool Decrypt, it says "Invalid password guess XXXXXX" even when I'm using the right key.

I've ended up looking at the data type offset option ( -o) in decrypt, maybe I have to set a different offset byte, but I don't know.

The pcap file is captured with ethereal and merged with mergecap, if that will help.

Maybe you know a better tool to decrypt wep packets.

Help would be appreciated.

DJRiMi
Why use a seperate program, if you allready are using Ethereal ?
Open the capture file in Ethereal, and configure Ethereal with the correct wep-key. (Edit-preferences-protocol-IEEE 802.11)

Dutch
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Old 03-28-2005   #3 (permalink)
djrimi
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Quote:
Originally Posted by Dutch
Why use a seperate program, if you allready are using Ethereal ?
Open the capture file in Ethereal, and configure Ethereal with the correct wep-key. (Edit-preferences-protocol-IEEE 802.11)

Dutch
Thank You!

I was unaware of that function in ethereal.

DJRiMi
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Old 03-28-2005   #4 (permalink)
Dutch
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Quote:
Originally Posted by djrimi
Thank You!

I was unaware of that function in ethereal.

DJRiMi
Another good reason to RTFM for any application that you want to use...

Dutch
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