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(Delphi ActiveX) Iterate Keys and Certs in PEMDemonstrates how to access each of the private keys and certs contained within a PEM. 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; pem: TChilkatPem; password: WideString; pemContent: WideString; numPrivateKeys: Integer; i: Integer; privKey: TPrivateKey; cert: TChilkatCert; numCerts: Integer; begin success := 0; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. pem := TChilkatPem.Create(Self); // Load the PEM from a file. // If the PEM is encrypted, provide a password. Otherwise pass an empty string for the password. password := 'myPassword'; success := pem.LoadPemFile('../myPemFiles/myPem.pem',password); if (success = 0) then begin Memo1.Lines.Add(pem.LastErrorText); Exit; end; // Note: If the app already has the PEM pre-loaded in a string variable, then load it // by calling LoadPem instead. pemContent := '... the PEM contents ...'; success := pem.LoadPem(pemContent,password); // Check for success as before.. // Iterate over the private keys. numPrivateKeys := pem.NumPrivateKeys; i := 0; privKey := TPrivateKey.Create(Self); while i < numPrivateKeys do begin pem.PrivateKeyAt(i,privKey.ControlInterface); Memo1.Lines.Add('Private Key ' + IntToStr(i) + ' is ' + IntToStr(privKey.BitLength) + ' in length'); i := i + 1; end; // Iterate over the certificates. cert := TChilkatCert.Create(Self); numCerts := pem.NumCerts; i := 0; while i < numCerts do begin pem.CertAt(i,cert.ControlInterface); Memo1.Lines.Add('Certificate ' + IntToStr(i) + ' : ' + cert.SubjectDN); i := i + 1; end; end; |
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