(Delphi DLL) Generate an ECC Key

Demonstrates how to generate an ECC key.

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, Global, PrivateKey, Prng, Ecc;

...

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

begin
//  All Chilkat classes can be unlocked at once at the beginning of a program
//  by calling UnlockBundle.  It requires a Bundle unlock code.
chilkatGlob := CkGlobal_Create();
success := CkGlobal_UnlockBundle(chilkatGlob,'Anything for 30-day trial.');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkGlobal__lastErrorText(chilkatGlob));
    Exit;
  end;

//  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 := CkEcc_GenEccKey(ecc,'secp256r1',fortuna);
if (CkEcc_getLastMethodSuccess(ecc) <> 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;

CkPrivateKey_Dispose(privKey);

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

CkGlobal_Dispose(chilkatGlob);
CkPrng_Dispose(fortuna);
CkEcc_Dispose(ecc);

end;