(.NET Core C#) Generate new DSA Key from OpenSSL Parameters File

Generates a new DSA key from an OpenSSL-created parameters file (DER and PEM formats supported). Examples of using OpenSSL to create parameter files are shown here:

openssl dsaparam -outform DER 1024 <  seedData.txt >dsaparam.der

openssl dsaparam 1024 < seedData.txt >dsaparam.pem

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

Chilkat.Dsa dsa = new Chilkat.Dsa();

bool success = dsa.GenKeyFromParamsDerFile("dsaparam.der");
if (success != true) {
    Debug.WriteLine(dsa.LastErrorText);
    return;
}

// To generate a key from PEM, call GenKeyFromParamsPem 
// (for an in-memory PEM string) or GenKeyFromParamsFilePem
// for a PEM file.

// The public and private keys may now be exported to PEM, DER,
// and XML formatted files.

string pemStr;
string xmlStr;

// First for the public key...
// The public key never needs to be encrypted.

// Save the public key in PEM format:
pemStr = dsa.ToPublicPem();
// This example will not check the return value of SaveText...
success = dsa.SaveText(pemStr,"dsa_pub.pem");

// Save the public key in DER format:
success = dsa.ToPublicDerFile("dsa_pub.der");

bool bPublicOnly = true;
// Save to XML
xmlStr = dsa.ToXml(bPublicOnly);
success = dsa.SaveText(pemStr,"dsa_pub.xml");

// ------------------------------------
// Now for the private key....
// ------------------------------------

// Unencrypted PEM:
pemStr = dsa.ToPem();
success = dsa.SaveText(pemStr,"dsa_priv.pem");

// Encrypted PEM:
pemStr = dsa.ToEncryptedPem("myPassword");
success = dsa.SaveText(pemStr,"dsa_privEncrypted.pem");

// DER:
success = dsa.ToDerFile("dsa_priv.der");

// XML:
bPublicOnly = false;
xmlStr = dsa.ToXml(bPublicOnly);
success = dsa.SaveText(pemStr,"dsa_priv.xml");

Debug.WriteLine("Finished!");