(C++) Generate an RSA Key and Get as Base64 DER

Demonstrates how to generate a 2048-bit RSA key and return the public and private parts as unencrypted Base64 encoded DER.

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

void ChilkatSample(void)
    {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkRsa rsa;

    // Generate a 2048-bit key.  Chilkat RSA supports
    bool success = rsa.GenerateKey(2048);
    if (success != true) {
        std::cout << rsa.lastErrorText() << "\r\n";
        return;
    }

    // Get the public part of the key.
    CkPublicKey *pubKey = rsa.ExportPublicKeyObj();

    // There are two possible formats for representing the RSA public key 
    // in ASN.1 (DER).  The possible formats are PKCS1 and PKCS8.
    // We can get either by setting bChoosePkcs1 to true or false.
    bool bChoosePkcs1 = true;
    const char *pubKeyBase64Der = pubKey->getEncoded(bChoosePkcs1,"base64");
    std::cout << "Public Key Base64 DER:" << "\r\n";
    std::cout << pubKeyBase64Der << "\r\n";

    delete pubKey;

    // Now get the private key as Base64 DER:
    // Get the private part of the key.
    // (Note: A public key is actually just a subset of the private key.  
    //  If you have the private key, you also have the public key.
    //  Thus Chilkat provides a method to get the public key from the private key.)
    CkPrivateKey *privKey = rsa.ExportPrivateKeyObj();

    // Again, we can get PKCS1 or PKCS8, but with different methods:
    const char *privKeyPkcs1 = privKey->getPkcs1ENC("base64");
    std::cout << "Private Key PKCS1 Base64 DER:" << "\r\n";
    std::cout << privKeyPkcs1 << "\r\n";

    const char *privKeyPkcs8 = privKey->getPkcs8ENC("base64");
    std::cout << "Private Key PKCS8 Base64 DER:" << "\r\n";
    std::cout << privKeyPkcs8 << "\r\n";

    delete privKey;
    }