WEP
From ArchWiki
Generating passphrase from commandline
You can generate a WEP key from a passphrase but iwconfig doesn't support this option. The key is generated using md5. The following script in perl creates a key from a passphrase :
#!/usr/bin/perl # Perl script to convert a passphrase to a WEP key. # By Aki Mimoto use strict; @ARGV or die "Usage: $0 passphrase\n"; print generate_key( @ARGV ), "\n"; sub generate_key { # -------------------------------------------------- require Digest::MD5; return substr Digest::MD5::md5_hex( substr( shift() x 64, 0, 64 ) ), 0, 26; }
It will work with a lot of access points except Apple because they don't use the same implementation.