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Confirmed the maximum length of the key for WaveLAN Gold cards is 

13 characters, not 14.  The 13 characters (104bit) secret will be
combined with 24-bit IV to consist the seed for 128-bit RC4.
Though maximum 14 characters can be configured in seven 16-bit hardware
registers, the last charactoer is apparently ignored both for encryption
and decryption.
This commit is contained in:
onoe 2000-07-27 20:24:19 +00:00
parent a7d2293ea4
commit 2761069b0f
1 changed files with 4 additions and 5 deletions
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9
usr.sbin/wiconfig/wiconfig.8
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@ -1,4 +1,4 @@
.\" $NetBSD: wiconfig.8,v 1.9 2000/07/04 05:20:03 itojun Exp $
.\" $NetBSD: wiconfig.8,v 1.10 2000/07/27 20:24:19 onoe Exp $
.\"
.\" Copyright (c) 1997, 1998, 1999
.\" Bill Paul <wpaul@ctr.columbia.edu> All rights reserved.
@ -146,10 +146,9 @@ be normal text (i.e., "hello") or a series of hexadecimal digits
(i.e., "0x1234512345"). For WaveLAN Silver cards, the key is
restricted to 40 bits, hence the key can be either a 5-character text string
or 10 hexadecimal digits. For WaveLAN Gold cards, the key can be up to
112 bits, which means the key can be specified as either a 14-character
text string or 28 hexadecimal digits. (The card claims to be 128-bit RC4,
but you can only send 112 bits to the driver. Strange, I wonder where the
other 16 bits come from, and what they are.)
104 bits, which means the key can be specified as either a 13-character
text string or 26 hexadecimal digits. The key will be combined with the
24-bit IV to consist the seed for RC4 in either case.
.It Fl T Ar 1|2|3|4
Specify which of the four WEP encryption keys will be used to encrypt
transmitted packets.