How to get authkey value from pcap file

[daxueba]

How to get authkey value from pcap file?

[daxueba]

I cannt find it from wireshark。

[binarymaster]

I cannt find it from wireshark

Of course, because AuthKey is a private derived key, which is not sent in a WPS transaction.

[daxueba]

in man
pixiewps -e -s -z -S -n -m -b
but
-S, --dh-small (deprecated)
Now，Where I can get this value from？