Verify SSL Server Certificate

Demonstrates how to connect to an SSL server and verify its SSL certificate.

Downloads:

MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

// Needs #include <CkSocket.h>
// Needs #include <CkCert.h>

    CkString strOut;

    CkSocket socket;

    bool success;
    success = socket.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        strOut.append("Failed to unlock component\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    bool ssl;
    ssl = true;
    long maxWaitMillisec;
    maxWaitMillisec = 20000;

    //  The SSL server hostname may be an IP address, a domain name,
    //  or "localhost".
    const char * sslServerHost;
    sslServerHost = "www.paypal.com";
    long sslServerPort;
    sslServerPort = 443;

    //  Connect to the SSL server:
    success = socket.Connect(sslServerHost,sslServerPort,ssl,maxWaitMillisec);
    if (success != true) {
        strOut.append(socket.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    CkCert *cert = 0;

    bool bExpired;
    bool bRevoked;
    bool bSignatureVerified;
    bool bTrustedRoot;

    cert = socket.GetSslServerCert();
    if (!(cert == 0 )) {

        strOut.append("Server Certificate:");
        strOut.append("\r\n");
        strOut.append("Distinguished Name: ");
        strOut.append(cert->subjectDN());
        strOut.append("\r\n");
        strOut.append("Common Name: ");
        strOut.append(cert->subjectCN());
        strOut.append("\r\n");
        strOut.append("Issuer Distinguished Name: ");
        strOut.append(cert->issuerDN());
        strOut.append("\r\n");
        strOut.append("Issuer Common Name: ");
        strOut.append(cert->issuerCN());
        strOut.append("\r\n");

        bExpired = cert->IsExpired();
        bRevoked = cert->get_Revoked();
        bSignatureVerified = cert->get_SignatureVerified();
        bTrustedRoot = cert->get_TrustedRoot();

        strOut.append("Expired: ");
        strOut.appendInt(bExpired);
        strOut.append("\r\n");
        strOut.append("Revoked: ");
        strOut.appendInt(bRevoked);
        strOut.append("\r\n");
        strOut.append("Signature Verified: ");
        strOut.appendInt(bSignatureVerified);
        strOut.append("\r\n");
        strOut.append("Trusted Root: ");
        strOut.appendInt(bTrustedRoot);
        strOut.append("\r\n");

        delete cert;
    }

    //  Close the connection with the server
    //  Wait a max of 20 seconds (20000 millsec)
    socket.Close(20000);



    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());