(Delphi DLL) Generate an ECDSA Key

See more ECC Examples

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

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

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
fortuna: HCkPrng;
entropy: PWideChar;
success: Boolean;
ecc: HCkEcc;
privKey: HCkPrivateKey;

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 := CkPrng_Create();
entropy := CkPrng__getEntropy(fortuna,32,'base64');
success := CkPrng_AddEntropy(fortuna,entropy,'base64');

ecc := CkEcc_Create();

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

privKey := CkPrivateKey_Create();
success := CkEcc_GenKey(ecc,'secp256r1',fortuna,privKey);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkEcc__lastErrorText(ecc));
    Exit;
  end;

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

// 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 := CkPrivateKey_SavePkcs8EncryptedPemFile(privKey,'pemPassword','myPemFiles/eccKey123.pem');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkPrivateKey__lastErrorText(privKey));
  end;

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

CkPrng_Dispose(fortuna);
CkEcc_Dispose(ecc);
CkPrivateKey_Dispose(privKey);

end;