Xbase++

ScMinidriver - Load Certificate from Smart Card or USB Token by Index

See more ScMinidriver Examples

Demonstrates how to load a certificate located on a smart card or USB token by key container index. Xbase++

LOCAL nSuccess
LOCAL oScmd
LOCAL cReaderName
LOCAL nRetval
LOCAL oCert
LOCAL nKeyContainerIndex
LOCAL cKeySpec

nSuccess := 0

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.
oScmd := CreateObject("Chilkat.ScMinidriver")

//  Reader names (smart card readers or USB tokens) can be discovered
//  via List Readers or Find Smart Cards
cReaderName := "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0"
nSuccess := oScmd:AcquireContext(cReaderName)
IF (nSuccess == 0)
    ? oScmd:LastErrorText
    oScmd:destroy()
    RETURN
ENDIF

//  If successful, the name of the currently inserted smart card is available:
? "Card name: " + oScmd:CardName

//  If desired, perform regular PIN authentication with the smartcard.
//  For more details about smart card PIN authentication, see the Smart Card PIN Authentication Example
nRetval := oScmd:PinAuthenticate("user", "000000")
IF (nRetval != 0)
    ? "PIN Authentication failed."
ENDIF

oCert := CreateObject("Chilkat.Cert")
//  We can pass a specific key container index, or -1 to locate the 1st non-empty container containing a certificate and private key.
nKeyContainerIndex := -1
//  keySpec can be "kex" or "sig" to indicate the key-exchange or signature position within the container.
//  keySpec can also be "any" to accept either position, with preference given to the "sig" position if both are occupied.
cKeySpec := "any"
nSuccess := oScmd:GetCert(nKeyContainerIndex, cKeySpec, oCert)
IF (nSuccess == 0)
    ? "Failed to load the certificate."
ELSE
    ? "Successfully loaded the cert object from the smart card / USB token."

    //  Note: When successful, the cert object is internally linked to the ScMinidriver object's authenticated session.
    //  The cert object can now be used to sign or do other cryptographic operations that occur on the smart card / USB token.
    //  If your application calls PinDeauthenticate or DeleteContext, the cert will no longer be able to sign on the smart card
    //  because the smart card ScMinidriver session will no longer be authenticated or deleted.
ENDIF

//  ...
//  ...
//  ...

//  When finished with operations that required authentication, you may if you wish, deauthenticate the session.
nSuccess := oScmd:PinDeauthenticate("user")
IF (nSuccess == 0)
    ? oScmd:LastErrorText
ENDIF

//  Delete the context when finished with the card.
nSuccess := oScmd:DeleteContext()
IF (nSuccess == 0)
    ? oScmd:LastErrorText
ENDIF

oScmd:destroy()
oCert:destroy()