Delphi ActiveX

Load a Private Key from a PEM File

Demonstrates the Chilkat PrivateKey.LoadPemFile method, which loads a private key from a PEM file. The only argument is the file path. It cannot load a password-protected key — use LoadEncryptedPemFile for that.

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own key file.

Background: The file-based counterpart to LoadPem, for the common case where the key lives in a .pem file. Like LoadPem it handles only unencrypted PEM; if the file is encrypted the load fails, signaling that you need the password-aware loader. When the exact on-disk format is uncertain, LoadAnyFormatFile auto-detects it.

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var
success: Integer;
privKey: TPrivateKey;

begin
success := 0;

//  Demonstrates the PrivateKey.LoadPemFile method, which loads a private key from a PEM file.  The
//  only argument is the file path.  It cannot load a password-protected key -- use
//  LoadEncryptedPemFile for that.

privKey := TPrivateKey.Create(Self);

success := privKey.LoadPemFile('qa_data/private_unencrypted.pem');
if (success = 0) then
  begin
    Memo1.Lines.Add(privKey.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Loaded a ' + privKey.KeyType + ' private key.');