Convert Certificate from PEM to DER

Convert a PEM formatted certificate file (.cer, .crt, .pem) to DER format (.cer, .der). The Chilkat certificate class/object is a freeware component that is included in many of the Chilkat downloads.

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// Needs #include <CkCert.h>

    CkString strOut;

    CkCert cert;

    bool success;

    //  LoadFromFile will load either PEM and DER formatted files.
    //  It automatically recognizes the file format based on the
    //  file contents.
    success = cert.LoadFromFile("chilkat.crt");
    if (success != true) {
        strOut.append(cert.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    strOut.append(cert.get_SubjectDN());
    strOut.append("\r\n");

    success = cert.ExportCertDerFile("chilkat.der");
    if (success != true) {
        strOut.append(cert.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    strOut.append("success!\r\n");

    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());