DSA Generate Key

Generates a DSA public/private key pair and saves to PEM and DER file formats (both encrypted and non-encrypted).

An encrypted DSA PEM looks like this:

-----BEGIN DSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-EDE3-CBC,9DAFD5C4CD62A5D0

QwDdp66sB0qKXQli7FbVcKL/eo3wu7kGRlV2sI8XbkNa1RTLiwnwTWDB0dqyWRQ8
...
Bx0HVfxKiNgCbL6BQEnYD+GOmMcckuj9Uhgloe/YuXCIDJBGhjUt/li3hvR/PXeC

V2xxNl1XKBE88njqi+UXt4vjGVNLpvXM
-----END DSA PRIVATE KEY-----

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bool success;

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

success = dsa.UnlockComponent("Anything for 30-day trial");
if (success != true) {
    MessageBox.Show(dsa.LastErrorText);
    return;
}

//  Call GenKey to generate a new DSA key.
//  The number of bits should be at least 1024 and a multiple
//  of 64.   Typical values are either 1024 or 2048.
//  DSA key generation is compute intensive and may take
//  a short while to complete.
success = dsa.GenKey(2048);
if (success != true) {
    MessageBox.Show(dsa.LastErrorText);
    return;
}

//  Extract the private and public parts to PEM or DER format
//  and save to 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;
bPublicOnly = true;
//  Save to XML
xmlStr = dsa.ToXml(bPublicOnly);
success = dsa.SaveText(xmlStr,"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(xmlStr,"dsa_priv.xml");

MessageBox.Show("Finished!");