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(MFC) ScMinidriver - Get Public Keys from Smart Card Key Container

See more ScMinidriver Examples

Demonstrates how to query a key container on a smart card (or USB token) to get the public part of the private keys that are present. A key container can hold two separate private keys -- one in the "signature" position, and the other in the "key exchange" position.

Chilkat C/C++ Library Downloads

MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkScMinidriver.h>
#include <CkPublicKey.h>

void ChilkatSample(void)
    {
    CkString strOut;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // Chilkat recommends the following free tool for interactively examining the contents of your smart card
    // through the ScMinidriver interface:  MGTEK Tool for Minidriver enabled Smart Cards

    // Let's first look at our smart card..
    // Here's the view of our Gemalto (Thales) IDPrime MD T=0 smart card in the MGTEK tool:

    

    CkScMinidriver scmd;

    // First we need to acquire a context to the smart card in the reader where it is inserted.
    // Reader names (smart card readers or USB tokens) can be discovered
    // via List Readers or Find Smart Cards
    const char *readerName = "Alcor Micro USB Smart Card Reader 0";
    bool success = scmd.AcquireContext(readerName);
    if (success == false) {
        strOut.append(scmd.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // If successful, the name of the currently inserted smart card is available:
    strOut.append("Card name: ");
    strOut.append(scmd.cardName());
    strOut.append("\r\n");

    // We likely shouldn't need to authenticate with the smart card (use a PIN) to simply get a public key,
    // so we can skip the PIN authenticatin step..

    // Let's get the key(s) present in Container #7.
    // In our case (shown in the image above), there is a private key in the "key exchange" position, but no key in the "signature" position.
    CkPublicKey pubkey_sig;
    CkPublicKey pubkey_kex;

    success = scmd.GetContainerKeys(7,pubkey_sig,pubkey_kex);
    if (success == false) {
        strOut.append(scmd.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    if (pubkey_sig.get_Empty() == true) {
        strOut.append("No signature key is present.");
        strOut.append("\r\n");
    }
    else {
        strOut.append("Signature key:");
        strOut.append("\r\n");
        strOut.append(pubkey_sig.getPem(true));
        strOut.append("\r\n");
    }

    if (pubkey_kex.get_Empty() == true) {
        strOut.append("No Key Exchange key is present.");
        strOut.append("\r\n");
    }
    else {
        strOut.append("Key Exchange key:");
        strOut.append("\r\n");
        strOut.append(pubkey_kex.getPem(true));
        strOut.append("\r\n");
    }

    scmd.DeleteContext();

    strOut.append("Success.");
    strOut.append("\r\n");

    // Here's the output of the above sample code:

    // Card name: IDPrime MD T=0
    // No signature key is present.
    // Key Exchange key:
    // -----BEGIN RSA PUBLIC KEY-----
    // MIIBCgKCAQEAsXeRhM55P13FbpNcXAMR3olbw2Wa6keZIHu5YTZYUBTlYWId+pNi
    // wUz3zFIEo+0IfYR0H27ybIycQO+1IIzJofUFNMAL3tZps2OKPlsjuCPls6kXpXhv
    // /gvhux8LrCtp4PcKWqJ6QVOZKChc7WAx40qFWzHi57ueqRTv3x0kESqGg/VjsqyT
    // Evb55psJO2RsfhLT7+YVh3hImRM3RDaJdkTkPuOxeFyT6N7VXD09329sLuS3QkUb
    // E9zEKDnz9X3d8dEQdJhSI9ba5fxl8R7fu8pB67ElfzFml96X1jLFtzy1pzOT5Fc4
    // ROcaqlYckVzdBq9sxezm6MYmDBjNAcibRwIDAQAB
    // -----END RSA PUBLIC KEY-----


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }

 

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