C_GetSlotList从IIS调用时失败但从IIS express调用失败 [英] C_GetSlotList Failing when called from IIS but not from IIS express

问题描述

所以我有这个c＃webservice，它通过置于system32文件夹中的一些智能卡usb驱动程序，通过德国Elster工具包（Eric）调用C_GetSlotList（）方法。
我在计算机服务器上有一张智能卡。当我在IIS Express中托管我的服务时，一切正常，但在IIS中却没有。可能是什么问题呢？有什么阻止IIS访问驱动程序？我确保我使用的应用程序池的标识具有管理员权限。
我正在使用Windows 7专业版，这是我得到的那种日志：

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

推荐答案

将IIS应用程序池标识更改为LocalService通常会有所帮助。不要问我为什么：）

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

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