mirror of
https://dev.iopsys.eu/bbf/icwmp.git
synced 2026-03-11 03:28:31 +01:00
72 lines
1.3 KiB
Bash
72 lines
1.3 KiB
Bash
#!/usr/sbin/bash
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usage()
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{
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echo "Usage: $0 <strength> <passphrase>"
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echo "-<strength> Indicate the WEP KEY strength to generate. Should be 64 or 128"
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echo "<passphrase> Indicate the passphrase used to generate the WEP KEY"
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echo "$0 -h display this help"
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}
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wepkey128()
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{
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dup="$1"
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while [ ${#dup} -lt 64 ]
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do
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dup="$dup$1"
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done
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dup="${dup:0:64}"
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key=`echo -n $dup | md5sum`
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echo "${key:0:26}"
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}
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wepkey64()
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{
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pass=$1
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pseed=" 0 0 0 0"
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i=0
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while [ $i -lt ${#pass} ]
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do
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let n=$i%4
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let j=$n*3
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let h=$j+3
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code=`printf '%d' "'${pass:$i:1}"`
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let "oxor=$code^${pseed:$j:3}"
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oxor=`printf '%3d' $oxor`
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pseed=${pseed:0:$j}$oxor${pseed:$h}
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let "i++"
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done
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let "randNumber=${pseed:0:3}|(${pseed:3:3}<<8)|(${pseed:6:3}<<16)|(${pseed:9}<<24)"
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k64=""
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for i in 0 1 2 3
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do
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for j in 0 1 2 3 4
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do
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let "randNumber=($randNumber * $((0x343fd)) + $((0x269ec3))) & $((0xffffffff))"
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let "tmp=($randNumber>>16)&$((0xff))"
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k64=$k64`printf '%02x' $tmp`
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done
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k64=$k64"\n"
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done
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printf "$k64"
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}
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if [ "_$1" = "-h" ]; then
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usage;
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exit 0;
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fi
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strength=$1
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passphrase=$2
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if [ _$strength != "_64" -a _$strength != "_128" ] || [ _$passphrase = "_" ]; then
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usage;
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exit 0;
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fi
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if [ $strength = "128" ]; then
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wepkey128 $passphrase
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else
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wepkey64 $passphrase
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fi
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