(Delphi DLL) Generate RSA Key and return Base64 PKCS8 Private Key

Demonstrates how to generate a new 2048-bit RSA private key and returns the Base64 encoded PKCS8 representation of the private 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, PrivateKey, Rsa;

...

procedure TForm1.Button1Click(Sender: TObject);
var
rsa: HCkRsa;
success: Boolean;
privKey: HCkPrivateKey;
privKeyPkcs8Base64: PWideChar;

begin
rsa := CkRsa_Create();

// Generate a 2048-bit key.  Chilkat RSA supports
// key sizes ranging from 512 bits to 8192 bits.
success := CkRsa_GenerateKey(rsa,2048);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkRsa__lastErrorText(rsa));
    Exit;
  end;

privKey := CkRsa_ExportPrivateKeyObj(rsa);

// Get the private key in PKCS8 Base64 format
privKeyPkcs8Base64 := CkPrivateKey__getPkcs8ENC(privKey,'base64');

// The key in base64 format will start similar to this:
// MIIEvAIBADANBgkqhkiG9w0BA...
Memo1.Lines.Add(privKeyPkcs8Base64);

CkRsa_Dispose(rsa);

end;