Delphi ActiveX

Load PEM Public/Private Key into RSA Object

See more RSA Examples

Demonstrates how to load a PEM key into the Chilkat RSA object. Delphi ActiveX

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
success: Integer;
rsa: TChilkatRsa;
publicKeyPem: WideString;
pubkey: TPublicKey;
privateKeyPem: WideString;
privkey: TPrivateKey;

begin
success := 0;

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

rsa := TChilkatRsa.Create(Self);

// First demonstrate importing a PEM public key:
publicKeyPem := 'PEM public-key data goes here';
pubkey := TPublicKey.Create(Self);

success := pubkey.LoadFromString(publicKeyPem);
if (success = 0) then
  begin
    Memo1.Lines.Add(pubkey.LastErrorText);
    Exit;
  end;

success := rsa.UsePublicKey(pubkey.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(rsa.LastErrorText);
    Exit;
  end;

// Demonstrate importing a PEM private key:
privateKeyPem := 'PEM private-key data goes here';
privkey := TPrivateKey.Create(Self);

// If the private key PEM is protected with a password, then 
// call LoadEncryptedPem.  Otherwise call LoadPem.
success := privkey.LoadPem(privateKeyPem);
if (success = 0) then
  begin
    Memo1.Lines.Add(privkey.LastErrorText);
    Exit;
  end;

success := rsa.UsePrivateKey(privkey.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(rsa.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('OK!');
end;