(Delphi DLL) Convert DSA DER Private Key to PEM

Converts a DSA private key from DER format to PEM. Demonstrates how to write both encrypted and unencrypted PEM formatted private keys.

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, Dsa;

...

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

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

dsa := CkDsa_Create();

// Load a DER private key.
success := CkDsa_FromDerFile(dsa,'dsa_priv.der');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkDsa__lastErrorText(dsa));
    Exit;
  end;

// Save to unencrypted PEM:
pemStr := CkDsa__toPem(dsa);
success := CkDsa_SaveText(dsa,pemStr,'dsa_priv.pem');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkDsa__lastErrorText(dsa));
    Exit;
  end;

// Save to encrypted PEM:
pemStr := CkDsa__toEncryptedPem(dsa,'myPassword');
success := CkDsa_SaveText(dsa,pemStr,'dsa_privEncrypted.pem');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkDsa__lastErrorText(dsa));
    Exit;
  end;

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

CkDsa_Dispose(dsa);

end;