Several token in Ubuntu server

[hurtado-santiago]

Problem Description

I have to sign/verify with several token in ubuntu server but OpenSC only recognize 8 of them.

Proposed Resolution

In some part of the system variables may be one that can be changed

Steps to reproduce

I use epass2003 fetitian devices.
Physically i know that there are more than 8 devices connected so i try the command:
pkcs11-tool --module XXXXX --slot 9 -O

Logs

error: PKCS11 function C_OpenSession failed: rv = CKR_SLOT_ID_INVALID (0x3)
Aborting.

[dengert]

the opensc.conf has a pkcs11 block where you can set max_virtual_slots and slots_per_card.
See man opensc.conf something like this will allow for 16 readers. Note Windows 10 only allows 10 readers.

app opensc-pkcs11 {
     pkcs11 {
         max_virtual_slots = 64;
         slots_per_card = 4;
     }
}

[frankmorgner]

Linux (PCSC-Lite), similarly, has a hard coded limit of 16 readers LudovicRousseau/PCSC#13

[hurtado-santiago]

Thanks!

@dengert it worked very well.
@frankmorgner that info clarified the restriction.

In my Ubuntu server 20.04 I edited /etc/opensc/opensc.conf, added the pkcs11 block and worked fine!