Delphi ActiveX

Generate an ECDSA Key

See more ECC Examples

Demonstrates how to generate an ECDSA key. Delphi ActiveX

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
fortuna: TChilkatPrng;
entropy: WideString;
ecc: TChilkatEcc;
privKey: TPrivateKey;

begin
success := 0;

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

// Create a Fortuna PRNG and seed it with system entropy.
// This will be our source of random data for generating the ECC private key.
fortuna := TChilkatPrng.Create(Self);
entropy := fortuna.GetEntropy(32,'base64');
success := fortuna.AddEntropy(entropy,'base64');

ecc := TChilkatEcc.Create(Self);

// Generate a random ECC private key on the secp256r1 curve.
// Chilkat also supports other curves, such as secp384r1, secp521r1, and secp256k1.

privKey := TPrivateKey.Create(Self);
success := ecc.GenKey('secp256r1',fortuna.ControlInterface,privKey.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(ecc.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add(privKey.GetXml());

// Save the private key to PKCS8 encrypted PEM
// (The private key can be saved in a variety of different formats. See the online reference documentation.)
success := privKey.SavePkcs8EncryptedPemFile('pemPassword','myPemFiles/eccKey123.pem');
if (success <> 1) then
  begin
    Memo1.Lines.Add(privKey.LastErrorText);
  end;

Memo1.Lines.Add('finished.');
end;