(Delphi ActiveX) Generate an ECDSA Key

See more ECC Examples

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

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
fortuna: TChilkatPrng;
entropy: WideString;
success: Integer;
ecc: TChilkatEcc;
privKey: TPrivateKey;

begin
// 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 <> 1) 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;