Load a Private Key from a PKCS #1 File

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Demonstrates the Chilkat PrivateKey.LoadPkcs1File method, which loads a private key from a file. The only argument is the file path. Despite the historical PKCS #1 name, it accepts any supported unencrypted private-key representation.

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own key file.

Background: PKCS #1 is the older, RSA-specific key format — the BEGIN RSA PRIVATE KEY block still common from OpenSSL. This method reads it, and like the other content-inspecting loaders it also accepts other unencrypted representations, so it is forgiving of what is actually in the file. For unknown or mixed formats, prefer LoadAnyFormatFile.

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bool success = false;

//  Demonstrates the PrivateKey.LoadPkcs1File method, which loads a private key from a file.  The
//  only argument is the file path.  Despite the historical PKCS #1 name, it accepts any supported
//  unencrypted private-key representation.

Chilkat.PrivateKey privKey = new Chilkat.PrivateKey();

success = privKey.LoadPkcs1File("qa_data/private_pkcs1.pem");
if (success == false) {
    Debug.WriteLine(privKey.LastErrorText);
    return;
}

Debug.WriteLine("Loaded a " + privKey.KeyType + " private key.");