(C++) Convert DSA DER Private Key to PEM

Converts a DSA private key from DER format to PEM. Demonstrates how to write both encrypted and unencrypted PEM formatted private keys.

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#include <CkDsa.h>

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

    CkDsa dsa;

    // Load a DER private key.
    bool success = dsa.FromDerFile("dsa_priv.der");
    if (success != true) {
        std::cout << dsa.lastErrorText() << "\r\n";
        return;
    }

    const char *pemStr = 0;

    // Save to unencrypted PEM:
    pemStr = dsa.toPem();
    success = dsa.SaveText(pemStr,"dsa_priv.pem");
    if (success != true) {
        std::cout << dsa.lastErrorText() << "\r\n";
        return;
    }

    // Save to encrypted PEM:
    pemStr = dsa.toEncryptedPem("myPassword");
    success = dsa.SaveText(pemStr,"dsa_privEncrypted.pem");
    if (success != true) {
        std::cout << dsa.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "Finished!" << "\r\n";
    }