C#

Generate new DSA Key from OpenSSL Parameters File

See more DSA Examples

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

C#

bool success = false;

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

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

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!");