Convert DSA Public Key DER to PEM

Converts a DSA public key from DER format to PEM.

Download Chilkat DSA ActiveX

uses
    Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
    Dialogs, StdCtrls,
    CHILKATDSALib_TLB,
    OleCtrls;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
dsa: TChilkatDsa;
pemStr: String;

begin


dsa := TChilkatDsa.Create(Self);

success := dsa.UnlockComponent('Anything for 30-day trial');
if (success <> 1) then
  begin
    ShowMessage(dsa.LastErrorText);
    Exit;
  end;

//  Load a DER public key.
success := dsa.FromPublicDerFile('dsa_pub.der');
if (success <> 1) then
  begin
    ShowMessage(dsa.LastErrorText);
    Exit;
  end;

//  Save the public key to PEM:
pemStr := dsa.ToPublicPem();
success := dsa.SaveText(pemStr,'dsa_pub.pem');
if (success <> 1) then
  begin
    ShowMessage(dsa.LastErrorText);
    Exit;
  end;

ShowMessage('Finished!');
end;