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(Lianja) ScMinidriver - PIN Authentication for Smart Card or USB Token
See more ScMinidriver Examples
Demonstrates how to PIN authenticate with a connected smart card or USB token.
Note: This functionality was introduced in Chilkat v188.8.131.52.
Note: The ScMinidriver functionality is for Windows-only because ScMinidriver DLLs only exist on Windows. In the next version, Chilkat will be releasing a Pkcs11 class to support Linux, MacOSX, and possibly other operating systems.
// This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. loScmd = createobject("CkScMinidriver") // Reader names (smart card readers or USB tokens) can be discovered // via List Readers or Find Smart Cards lcReaderName = "Alcor Micro USB Smart Card Reader 0" llSuccess = loScmd.AcquireContext(lcReaderName) if (llSuccess = .F.) then ? loScmd.LastErrorText release loScmd return endif // If we are successful, the name of the currently inserted smart card is available: lcCardName = loScmd.CardName ? "Card name: " + lcCardName // Perform regular PIN authentication with the smartcard. // If authentication is successful, then the ScMinidriver session is authenticated and // operations such as signing are permissible. // The pin ID can be "user", "admin", or a number "3" through "7" (passed as a string). // The possible pin ID's for a given smartcard are obtained via the GetCardProperties method. // See Get Smart Card Properties for sample code. // You should generally use the "user" pin ID. You would only use the other pin ID's for very specific purposes. lcPinId = "user" // Change this to the PIN for your smart card. lcPin = "0000" lnRetval = loScmd.PinAuthenticate(lcPinId,lcPin) // The return value is 0 for success. // If the retval is greater than 0, it is the number of attempts remaining before the PIN is blocked. // If the retval equals -1, then something else went wrong and you should consult the LastErrorText. if (lnRetval < 0) then ? loScmd.LastErrorText release loScmd return endif if (lnRetval > 0) then ? "PIN authentcation failed, " + str(lnRetval) + " attempts remaining before the PIN is blocked." else ? "PIN authentication successful. Your session is now authenticated and you may proceed with operations such as signing." endif // ... // ... // ... // You may deauthenticate the session when finished with operations that required authentication. llSuccess = loScmd.PinDeauthenticate(lcPinId) if (llSuccess = .F.) then ? loScmd.LastErrorText endif // Delete the context when finished with the card. llSuccess = loScmd.DeleteContext() if (llSuccess = .F.) then ? loScmd.LastErrorText endif release loScmd
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