Delphi DLL

DSA Public Key PEM to DER Conversion

See more DSA Examples

Converts a DSA public key from PEM format to DER. Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Dsa;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
dsa: HCkDsa;
pemPublicKey: PWideChar;

begin
success := False;

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

dsa := CkDsa_Create();

// Load a PEM public key.

pemPublicKey := CkDsa__loadText(dsa,'dsa_pub.pem');
// Import the public key PEM into the DSA object.
success := CkDsa_FromPublicPem(dsa,pemPublicKey);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkDsa__lastErrorText(dsa));
    Exit;
  end;

// Write it out as a DER file:
success := CkDsa_ToPublicDerFile(dsa,'dsa_pub.der');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkDsa__lastErrorText(dsa));
    Exit;
  end;

Memo1.Lines.Add('Finished!');

CkDsa_Dispose(dsa);

end;