how to pass the smartcard info from one machine to another via ssh

Question

question:
I am logged into machinA with smartcard
and using that smcartcard information I can ssh into the machineB by doing\

ssh -I pkcs11.so `machineB`

Now that I am in machineB, I want to use the smartcard info to login to machineC
But I am not able to do that.

I assume that it I have to pass some forwarding option when I come from machineA to machineB do: like so\

ssh -I pkcs11.so `machineB` -o "forwardagen=yes"

but I cannot figure out exactly which option will do that or if it is even possible!!

my goal is:
using smartcard information
I want to go from machineA > machineB > machineC \

please let me know if there is any option.

Answer 1

Here's an interesting blog post describing an SSH tunnel for PC/SC: https://ludovicrousseau.blogspot.com/2022/02/one-smart-card-reader-accessible-from.html