Generate RSA Public/Private Key Pair and Export to PEM

MFC example code showing how to generate an RSA public/private key pair and export to PEM files.

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// Needs #include <CkRsa.h>
// Needs #include <CkPrivateKey.h>
// Needs #include <CkPublicKey.h>

    CkString strOut;

    CkRsa rsa;

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

    //  Generate a 1024-bit key.  Chilkat RSA supports
    //  key sizes ranging from 512 bits to 4096 bits.
    success = rsa.GenerateKey(1024);
    if (success != true) {
        strOut.append(rsa.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Keys are exported in XML format:
    const char * publicKeyXml;
    publicKeyXml = rsa.exportPublicKey();
    strOut.append(publicKeyXml);
    strOut.append("\r\n");

    const char * privateKeyXml;
    privateKeyXml = rsa.exportPrivateKey();
    strOut.append(privateKeyXml);
    strOut.append("\r\n");

    //  Save the private key in PEM format:
    CkPrivateKey privKey;
    privKey.LoadXml(privateKeyXml);
    privKey.SaveRsaPemFile("privateKey.pem");

    //  Save the public key in PEM format:
    CkPublicKey pubKey;
    pubKey.LoadXml(publicKeyXml);
    pubKey.SaveOpenSslPemFile("publicKey.pem");

    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());