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Unicode C Examples

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(Unicode C) 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.

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#include <C_CkScMinidriverW.h>
#include <C_CkCertW.h>

void ChilkatSample(void)
    {
    HCkScMinidriverW scmd;
    const wchar_t *readerName;
    BOOL success;
    int retval;
    HCkCertW cert;
    int keyContainerIndex;
    const wchar_t *keySpec;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.
    scmd = CkScMinidriverW_Create();

    // Reader names (smart card readers or USB tokens) can be discovered
    // via List Readers or Find Smart Cards
    readerName = L"SCM Microsystems Inc. SCR33x USB Smart Card Reader 0";
    success = CkScMinidriverW_AcquireContext(scmd,readerName);
    if (success == FALSE) {
        wprintf(L"%s\n",CkScMinidriverW_lastErrorText(scmd));
        CkScMinidriverW_Dispose(scmd);
        return;
    }

    // If successful, the name of the currently inserted smart card is available:
    wprintf(L"Card name: %s\n",CkScMinidriverW_cardName(scmd));

    // If desired, perform regular PIN authentication with the smartcard.
    // For more details about smart card PIN authentication, see the Smart Card PIN Authentication Example
    retval = CkScMinidriverW_PinAuthenticate(scmd,L"user",L"000000");
    if (retval != 0) {
        wprintf(L"PIN Authentication failed.\n");
    }

    cert = CkCertW_Create();
    // We can pass a specific key container index, or -1 to locate the 1st non-empty container containing a certificate and private key.
    keyContainerIndex = -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.
    keySpec = L"any";
    success = CkScMinidriverW_GetCert(scmd,keyContainerIndex,keySpec,cert);
    if (success == FALSE) {
        wprintf(L"Failed to load the certificate.\n");
    }
    else {
        wprintf(L"Successfully loaded the cert object from the smart card / USB token.\n");

        // 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.
    }

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

    // When finished with operations that required authentication, you may if you wish, deauthenticate the session.
    success = CkScMinidriverW_PinDeauthenticate(scmd,L"user");
    if (success == FALSE) {
        wprintf(L"%s\n",CkScMinidriverW_lastErrorText(scmd));
    }

    // Delete the context when finished with the card.
    success = CkScMinidriverW_DeleteContext(scmd);
    if (success == FALSE) {
        wprintf(L"%s\n",CkScMinidriverW_lastErrorText(scmd));
    }



    CkScMinidriverW_Dispose(scmd);
    CkCertW_Dispose(cert);

    }

 

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