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I have a hexadecimal WEP key in the setting of my router.

When I try to connect, the system asks me for the WEP passphrase.

How can I derive it from my hexadecimal?

This is what I have:

84:12:7D:13:4D:08:31:89:A4:AF:97:07:21

What is the way to get it?

Thanks a lot.

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Windows will also accept the hexadecimal key, no conversion is needed. In fact, it is the recommended format. From the documentation for configuring WEP in Windows XP:

If you are typing the WEP key using hexadecimal digits, you must type 10 hexadecimal digits for a 40-bit key and 26 hexadecimal digits for a 104-bit key. If you have the choice of the format of the WEP key, choose hexadecimal.

However, you should type 84127D134D083189A4AF970721, without the : characters. Those are just separators which are not actually part of the key.

Finally, note that your key is now useless for security as you have published it on the internet.

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    What Windows accepts is irrelevant on this site. Jan 24, 2011 at 21:15
  • @Gilles: the OP cross-posted to Yahoo answers, where he mentions that "windows asks me for a pass-phrase". From that I knew that it wasn't really a question about unix/linux. Perhaps I should have mentioned this in my answer.
    – Wim Coenen
    Jan 24, 2011 at 22:50

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