(MFC) Get Issuer Certificate Information

See more Certificates Examples

A certificate contains information about its issuer. This example demonstrates how to get the issuer information from a certificate.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkCert.h>

void ChilkatSample(void)
    {
    CkString strOut;

    CkCert cert;

    bool success = cert.LoadFromFile("qa_data/certs/sample.cer");
    if (success == false) {
        strOut.append(cert.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Get issuer information:

    // -----------------------------------------------------------------------
    // (Not all subject fields may exist depending on the issuer certificate.)
    // -----------------------------------------------------------------------

    // Issuer DN (Distinguished Name, i.e. all the Issuer subject parts)
    strOut.append("DN: ");
    strOut.append(cert.issuerDN());
    strOut.append("\r\n");

    // Common Subject parts:
    // Issuer Common Name
    strOut.append("CN: ");
    strOut.append(cert.issuerCN());
    strOut.append("\r\n");

    // Issuer Country
    strOut.append("C: ");
    strOut.append(cert.issuerC());
    strOut.append("\r\n");

    // Issuer Email address
    strOut.append("E: ");
    strOut.append(cert.issuerE());
    strOut.append("\r\n");

    // Issuer Locality
    strOut.append("L: ");
    strOut.append(cert.issuerL());
    strOut.append("\r\n");

    // Issuer Organization
    strOut.append("O: ");
    strOut.append(cert.issuerO());
    strOut.append("\r\n");

    // Issuer Organizational Unit
    strOut.append("OU: ");
    strOut.append(cert.issuerOU());
    strOut.append("\r\n");

    // Issuer State
    strOut.append("S: ");
    strOut.append(cert.issuerS());
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }