C_GetSlotList Failing when called from IIS but not from IIS express

Question

So I have this c# webservice that eventuallly calls C_GetSlotList() method from the German Elster toolkit (Eric) thru some smartcard usb driver placed in system32 folder. I have a smartcard in the computer server. When I host my service in IIS Express everything works fine, however in IIS it doesn't. What could be the problem? Does something block IIS from accessing the driver? I made sure that the identity of the application pool I'm using has admin rights. I'm using Windows 7 professional and this is the kind of log I am getting:

2016-10-18 15:16:58,144560  INFO: esigner       cryptokiVersion = 02.14
2016-10-18 15:16:58,144560  INFO: esigner        manufacturerID = A.E.T. Europe B.V.              
2016-10-18 15:17:01,244870 ERROR: esigner       error calling C_GetSlotList()
2016-10-18 15:17:01,244870 ERROR: esigner                    rv = 00000006
2016-10-18 15:17:01,244870 ERROR: esigner           ulSlotCount = 0
2016-10-18 15:17:01,244870 ERROR: esigner       pkcs11_init() failed
2016-10-18 15:17:01,245870  INFO: esigner  ENGINE_set_default_RSA(0436CC30) = returned 0
2016-10-18 15:17:01,245870  INFO: esigner       esiclGetToken() = end critical section

score 5 · Accepted Answer · answered Oct 18 '16 at 17:39

5

Changing IIS application pool identity to LocalService usually helps. Don't ask me why :)

answered Oct 18 '16 at 17:39

jariq

11,681
3
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you earned yourself a beer, man and my boss would probably kiss your feet:). it worked:D – Greg Oct 18 '16 at 17:52
1

will do, I'll only test it on the other computers, too. – Greg Oct 19 '16 at 06:45
Don't Ask me why :) – Kamran Shahid Mar 14 '19 at 12:48

score 1 · Answer 2 · answered Jul 04 '22 at 13:18

1

For those who want to access the current user certificate store, changing the IIS Application Pool will solve one problem but introduce another.

Check my answer here.

answered Jul 04 '22 at 13:18

Ahmed Hesham

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C_GetSlotList Failing when called from IIS but not from IIS express

2 Answers2

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