(Delphi ActiveX) Generate an Ed25519 Key Pair

Demonstrates how to generate a new Ed25519 public/private key pair.

Note: This example requires Chilkat v9.5.0.83 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
eddsa: TChilkatEdDSA;
prng: TChilkatPrng;
privKey: TPrivateKey;
success: Integer;
jwk: WideString;
json: TChilkatJsonObject;

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

eddsa := TChilkatEdDSA.Create(Self);
prng := TChilkatPrng.Create(Self);
privKey := TPrivateKey.Create(Self);

// Generates a new eddsa key and stores it in privKey.
success := eddsa.GenEd25519Key(prng.ControlInterface,privKey.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(eddsa.LastErrorText);
    Exit;
  end;

// Examine the ed25519 key in JWK format;
jwk := privKey.GetJwk();

json := TChilkatJsonObject.Create(Self);
json.Load(jwk);
json.EmitCompact := 0;
Memo1.Lines.Add(json.Emit());

// Sample output:
// {
//   "kty": "OKP",
//   "crv": "Ed25519",
//   "x": "SE2Kne5xt51z1eciMH2T2ftDQp96Gl6FhY6zSQujiP0",
//   "d": "O-eRXewadF0sNyB0U9omcnt8Qg2ZmeK3WSXPYgqe570",
//   "use": "sig"
// }

// In the above JWK, x is the public key, y is the private key.
// Both are 32 bytes and are base64-url encoded.
end;