(DataFlex) 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.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoScmd
    String sReaderName
    Boolean iSuccess
    Integer iRetval
    Variant vCert
    Handle hoCert
    Integer iKeyContainerIndex
    String sKeySpec
    String sTemp1

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.
    Get Create (RefClass(cComChilkatScMinidriver)) To hoScmd
    If (Not(IsComObjectCreated(hoScmd))) Begin
        Send CreateComObject of hoScmd
    End

    // Reader names (smart card readers or USB tokens) can be discovered
    // via List Readers or Find Smart Cards
    Move "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0" To sReaderName
    Get ComAcquireContext Of hoScmd sReaderName To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoScmd To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // If successful, the name of the currently inserted smart card is available:
    Get ComCardName Of hoScmd To sTemp1
    Showln "Card name: " sTemp1

    // If desired, perform regular PIN authentication with the smartcard.
    // For more details about smart card PIN authentication, see the Smart Card PIN Authentication Example
    Get ComPinAuthenticate Of hoScmd "user" "000000" To iRetval
    If (iRetval <> 0) Begin
        Showln "PIN Authentication failed."
    End

    Get Create (RefClass(cComChilkatCert)) To hoCert
    If (Not(IsComObjectCreated(hoCert))) Begin
        Send CreateComObject of hoCert
    End
    // We can pass a specific key container index, or -1 to locate the 1st non-empty container containing a certificate and private key.
    Move -1 To iKeyContainerIndex
    // 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.
    Move "any" To sKeySpec
    Get pvComObject of hoCert to vCert
    Get ComGetCert Of hoScmd iKeyContainerIndex sKeySpec vCert To iSuccess
    If (iSuccess = False) Begin
        Showln "Failed to load the certificate."
    End
    Else Begin
        Showln "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.
    End

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

    // When finished with operations that required authentication, you may if you wish, deauthenticate the session.
    Get ComPinDeauthenticate Of hoScmd "user" To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoScmd To sTemp1
        Showln sTemp1
    End

    // Delete the context when finished with the card.
    Get ComDeleteContext Of hoScmd To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoScmd To sTemp1
        Showln sTemp1
    End



End_Procedure