(Delphi DLL) ScMinidriver - List Certificates on a Smart Card or USB Token

See more ScMinidriver Examples

Gets a list of certificates contained on a smart card or USB token.

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, ScMinidriver, StringTable;

...

procedure TForm1.Button1Click(Sender: TObject);
var
scmd: HCkScMinidriver;
readerName: PWideChar;
success: Boolean;
stCerts: HCkStringTable;
certPart: PWideChar;
numCerts: Integer;
i: Integer;

begin
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

scmd := CkScMinidriver_Create();

// Reader names (smart card readers or USB tokens) can be discovered
// via PCSC List Readers or PCSC Find Smart Cards
readerName := 'SCM Microsystems Inc. SCR33x USB Smart Card Reader 0';
success := CkScMinidriver_AcquireContext(scmd,readerName);
if (success = False) then
  begin
    Memo1.Lines.Add(CkScMinidriver__lastErrorText(scmd));
    Exit;
  end;

stCerts := CkStringTable_Create();

// We can choose one of the following items of information to get for each certificate:
// "subjectDN" -- Return the full distinguished name of the cert.
// "subjectDN_withTags" -- Same as above, but in a format that includes the subject part tags, such as the "CN=" in "CN=something"
// "subjectCN" -- Return just the common name part of the certificate's subject.
// "serial" -- Return the certificate serial number.
// "serial:issuerCN" -- return the certificate serial number + the issuer's common name, delimited with a colon char.
certPart := 'subjectCN';

success := CkScMinidriver_ListCerts(scmd,certPart,stCerts);
if (success = False) then
  begin
    Memo1.Lines.Add(CkScMinidriver__lastErrorText(scmd));
    Exit;
  end;

numCerts := CkStringTable_getCount(stCerts);
i := 0;
while i < numCerts do
  begin
    Memo1.Lines.Add(IntToStr(i) + ': ' + CkStringTable__stringAt(stCerts,i));
    i := i + 1;
  end;

// Delete the context when finished with the card.
success := CkScMinidriver_DeleteContext(scmd);
if (success = False) then
  begin
    Memo1.Lines.Add(CkScMinidriver__lastErrorText(scmd));
  end;

CkScMinidriver_Dispose(scmd);
CkStringTable_Dispose(stCerts);

end;