Delphi ActiveX Requires Chilkat v11.0.0+

Export a Certificate's Private Key to Various Formats

See more Certificates Examples

Loads a digital certificate and private key from a PFX file (also known as PKCS#12) and exports the private key to various formats: (1) PKCS8 Encrypted, (2) PKCS8 Encrypted PEM, (3) PKCS8 unencrypted, (4) PKCS8 PEM unencrypted, (5) RSA DER unencrypted, (6) RSA PEM unencrypted, (7) XML. Delphi ActiveX

var
success: Integer;
cert: TChilkatCert;
pfxFilename: WideString;
pfxPassword: WideString;
privKey: TPrivateKey;
password: WideString;
path: WideString;

begin
success := 0;

cert := TChilkatCert.Create(Self);

//  Load from the PFX file
pfxFilename := '/Users/chilkat/testData/pfx/chilkat_ssl_pwd_is_test.pfx';
pfxPassword := 'test';

//  A PFX typically contains certificates in the chain of authentication.
//  The Chilkat cert object will choose the certificate w/
//  private key farthest from the root authority cert.
//  To access all the certificates in a PFX, use the 
//  Chilkat certificate store object instead.
success := cert.LoadPfxFile(pfxFilename,pfxPassword);
if (success = 0) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

//  Get the private key...
privKey := TPrivateKey.Create(Self);
success := cert.GetPrivateKey(privKey.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

//  Export to various formats:

password := 'secret';

//  PKCS8 Encrypted DER
path := '/Users/chilkat/testData/privkeys/chilkat_pkcs8_enc.der';
success := privKey.SavePkcs8EncryptedFile(password,path);
if (success = 0) then
  begin
    Memo1.Lines.Add(privKey.LastErrorText);
    Exit;
  end;

//  PKCS8 Encrypted PEM
path := '/Users/chilkat/testData/privkeys/chilkat_pkcs8_enc.pem';
success := privKey.SavePkcs8EncryptedPemFile(password,path);
if (success = 0) then
  begin
    Memo1.Lines.Add(privKey.LastErrorText);
    Exit;
  end;

//  PKCS8 Unencrypted DER
path := '/Users/chilkat/testData/privkeys/chilkat_pkcs8.der';
success := privKey.SavePkcs8File(path);
if (success = 0) then
  begin
    Memo1.Lines.Add(privKey.LastErrorText);
    Exit;
  end;

//  PKCS8 Unencrypted PEM
path := '/Users/chilkat/testData/privkeys/chilkat_pkcs8.pem';
success := privKey.SavePkcs8PemFile(path);
if (success = 0) then
  begin
    Memo1.Lines.Add(privKey.LastErrorText);
    Exit;
  end;

//   RSA DER (unencrypted)
path := '/Users/chilkat/testData/privkeys/chilkat_rsa.der';
success := privKey.SavePkcs1File(path);
if (success = 0) then
  begin
    Memo1.Lines.Add(privKey.LastErrorText);
    Exit;
  end;

//  RSA PEM (unencrypted)
path := '/Users/chilkat/testData/privkeys/chilkat_rsa.pem';
success := privKey.SavePemFile(path);
if (success = 0) then
  begin
    Memo1.Lines.Add(privKey.LastErrorText);
    Exit;
  end;

//  XML (unencrypted)
path := '/Users/chilkat/testData/privkeys/chilkat.xml';
success := privKey.SaveXmlFile(path);
if (success = 0) then
  begin
    Memo1.Lines.Add(privKey.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Private key exported to various formats.');