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(Delphi ActiveX) Export a Certificate's Private Key to Various FormatsLoads 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. Note: This example requires Chilkat v11.0.0 or greater.
uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB; ... procedure TForm1.Button1Click(Sender: TObject); 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.'); end; |
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