Delphi DLL

Export a Traditional Private Key as Encoded Text

Demonstrates the Chilkat PrivateKey.GetPkcs1ENC method, which exports the key as the traditional/preferred unencrypted DER and encodes the DER bytes as text. The only argument names the binary encoding, such as base64 or hex.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the encoded-text form of the traditional DER representation — the same bytes the traditional PEM wraps, but returned as a string in the encoding you choose. Use it when a legacy consumer needs the traditional key structure delivered as text rather than as a PEM file. The DER is unencrypted, so the result is sensitive.

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var
success: Boolean;
privKey: HCkPrivateKey;
encoded: PWideChar;

begin
success := False;

//  Load a private key to export.
privKey := CkPrivateKey_Create();
success := CkPrivateKey_LoadPemFile(privKey,'qa_data/private.pem');
if (success = False) then
  begin
    Memo1.Lines.Add(CkPrivateKey__lastErrorText(privKey));
    Exit;
  end;

//  Export as the traditional/preferred unencrypted DER, then encode the DER bytes as text.  The
//  only argument names the binary encoding, such as "base64" or "hex".
encoded := CkPrivateKey__getPkcs1ENC(privKey,'base64');
if (CkPrivateKey_getLastMethodSuccess(privKey) = False) then
  begin
    Memo1.Lines.Add(CkPrivateKey__lastErrorText(privKey));
    Exit;
  end;
Memo1.Lines.Add(encoded);

CkPrivateKey_Dispose(privKey);