(Delphi ActiveX) ScMinidriver - Get Smartcard Properties

See more ScMinidriver Examples

Gets information about the smart card currently inserted in the reader (or USB token).

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

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
scmd: TChilkatScMinidriver;
readerName: WideString;
success: Integer;
json: TChilkatJsonObject;
strVal: WideString;
bytesAvailable: Integer;
containersAvailable: Integer;
maxKeyContainers: Integer;
capabilitiesFCertificateCompression: Integer;
capabilitiesFKeyGen: Integer;
keySizesMinimumBitlen: Integer;
keySizesDefaultBitlen: Integer;
keySizesMaximumBitlen: Integer;
keySizesIncrementalBitlen: Integer;
readOnly: Integer;
cacheMode: WideString;
supportsWinX509Enrollment: Integer;
guid: WideString;
serial: WideString;
pinUserType: WideString;
pinUserPurpose: WideString;
pinUserCachePolicy: WideString;
pinUserPolicyInfo: WideString;
pinUserFlags: WideString;
pinUserAcceptPlainTextPin: Integer;
pinUserGenerateSessionPin: Integer;
pinAdminType: WideString;
pinAdminPurpose: WideString;
pinAdminCachePolicy: WideString;
pinAdminPolicyInfo: WideString;
pinAdminFlags: WideString;
pinRole3Type: WideString;
pinRole3Purpose: WideString;
pinRole3CachePolicy: WideString;
pinRole3PolicyInfo: WideString;
pinRole3Flags: WideString;
pinRole3AcceptPlainTextPin: Integer;
pinRole3GenerateSessionPin: Integer;
pinRole4Type: WideString;
pinRole4Purpose: WideString;
pinRole4CachePolicy: WideString;
pinRole4PolicyInfo: WideString;
pinRole4Flags: WideString;
pinRole4AcceptPlainTextPin: Integer;
pinRole4GenerateSessionPin: Integer;
i: Integer;
count_i: Integer;

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

scmd := TChilkatScMinidriver.Create(Self);

// Reader names (smart card readers or USB tokens) can be discovered
// via PCSC List Readers or PCSC Find Smart Cards
readerName := 'Alcor Micro USB Smart Card Reader 0';
success := scmd.AcquireContext(readerName);
if (success = 0) then
  begin
    Memo1.Lines.Add(scmd.LastErrorText);
    Exit;
  end;

json := TChilkatJsonObject.Create(Self);
json.EmitCompact := 0;

success := scmd.GetCardProperties(json.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(scmd.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add(json.Emit());

// Here is sample output:
// See below for sample code to parse the JSON.
// 
// NOTE: Not all smart cards support all properties.
// The GetCardProperties method will return information for all properties supported by the card.

// {
//   "bytesAvailable": 74752,
//   "containersAvailable": 18,
//   "maxKeyContainers": 20,
//   "capabilities": {
//     "fCertificateCompression": false,
//     "fKeyGen": true
//   },
//   "keySizes": {
//     "minimumBitlen": 2048,
//     "defaultBitlen": 2048,
//     "maximumBitlen": 4096,
//     "incrementalBitlen": 1024
//   },
//   "readOnly": false,
//   "cacheMode": "global",
//   "supportsWinX509Enrollment": true,
//   "guid": "1201803d-03e6-772a-3d80-0112e6032a77",
//   "serial": "e6032a773d800112e6032a77",
//   "pins": [
//     "user",
//     "admin",
//     "role3",
//     "role4"
//   ],
//   "pin": {
//     "user": {
//       "type": "regular",
//       "purpose": "primaryCard",
//       "changePermission": [
//         "user"
//       ],
//       "unblockPermission": [
//         "admin"
//       ],
//       "cachePolicy": "normal",
//       "policyInfo": "00000000",
//       "flags": "00000000",
//       "acceptPlainTextPin": true,
//       "generateSessionPin": false
//     },
//     "admin": {
//       "type": "challenge/response",
//       "purpose": "administrator",
//       "changePermission": [
//         "admin"
//       ],
//       "cachePolicy": "normal",
//       "policyInfo": "00000000",
//       "flags": "00000000"
//     },
//     "role3": {
//       "type": "regular",
//       "purpose": "digitalSignature",
//       "changePermission": [
//         "role3"
//       ],
//       "unblockPermission": [
//         "role4"
//       ],
//       "cachePolicy": "alwaysPrompt",
//       "policyInfo": "00000000",
//       "flags": "00000000",
//       "acceptPlainTextPin": true,
//       "generateSessionPin": false
//     },
//     "role4": {
//       "type": "regular",
//       "purpose": "unblockOnly",
//       "changePermission": [
//         "role4"
//       ],
//       "cachePolicy": "normal",
//       "policyInfo": "00000000",
//       "flags": "00000000",
//       "acceptPlainTextPin": true,
//       "generateSessionPin": false
//     }
//   },
//   "importSupport": [
//     "plainText",
//     "rsaKeyest",
//     "eccKeyest",
//     "symmetric"
//   ],
//   "algorithms": [
//     "AES"
//   ],
//   "paddingSchemes": [
//     "block",
//     "pkcs1",
//     "pss",
//     "oaep"
//   ],
//   "chainingModes": [
//     "ChainingModeCBC"
//   ]
// }

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

bytesAvailable := json.IntOf('bytesAvailable');
containersAvailable := json.IntOf('containersAvailable');
maxKeyContainers := json.IntOf('maxKeyContainers');
capabilitiesFCertificateCompression := json.BoolOf('capabilities.fCertificateCompression');
capabilitiesFKeyGen := json.BoolOf('capabilities.fKeyGen');
keySizesMinimumBitlen := json.IntOf('keySizes.minimumBitlen');
keySizesDefaultBitlen := json.IntOf('keySizes.defaultBitlen');
keySizesMaximumBitlen := json.IntOf('keySizes.maximumBitlen');
keySizesIncrementalBitlen := json.IntOf('keySizes.incrementalBitlen');
readOnly := json.BoolOf('readOnly');
cacheMode := json.StringOf('cacheMode');
supportsWinX509Enrollment := json.BoolOf('supportsWinX509Enrollment');
guid := json.StringOf('guid');
serial := json.StringOf('serial');
pinUserType := json.StringOf('pin.user.type');
pinUserPurpose := json.StringOf('pin.user.purpose');
pinUserCachePolicy := json.StringOf('pin.user.cachePolicy');
pinUserPolicyInfo := json.StringOf('pin.user.policyInfo');
pinUserFlags := json.StringOf('pin.user.flags');
pinUserAcceptPlainTextPin := json.BoolOf('pin.user.acceptPlainTextPin');
pinUserGenerateSessionPin := json.BoolOf('pin.user.generateSessionPin');
pinAdminType := json.StringOf('pin.admin.type');
pinAdminPurpose := json.StringOf('pin.admin.purpose');
pinAdminCachePolicy := json.StringOf('pin.admin.cachePolicy');
pinAdminPolicyInfo := json.StringOf('pin.admin.policyInfo');
pinAdminFlags := json.StringOf('pin.admin.flags');
pinRole3Type := json.StringOf('pin.role3.type');
pinRole3Purpose := json.StringOf('pin.role3.purpose');
pinRole3CachePolicy := json.StringOf('pin.role3.cachePolicy');
pinRole3PolicyInfo := json.StringOf('pin.role3.policyInfo');
pinRole3Flags := json.StringOf('pin.role3.flags');
pinRole3AcceptPlainTextPin := json.BoolOf('pin.role3.acceptPlainTextPin');
pinRole3GenerateSessionPin := json.BoolOf('pin.role3.generateSessionPin');
pinRole4Type := json.StringOf('pin.role4.type');
pinRole4Purpose := json.StringOf('pin.role4.purpose');
pinRole4CachePolicy := json.StringOf('pin.role4.cachePolicy');
pinRole4PolicyInfo := json.StringOf('pin.role4.policyInfo');
pinRole4Flags := json.StringOf('pin.role4.flags');
pinRole4AcceptPlainTextPin := json.BoolOf('pin.role4.acceptPlainTextPin');
pinRole4GenerateSessionPin := json.BoolOf('pin.role4.generateSessionPin');
i := 0;
count_i := json.SizeOfArray('pins');
while i < count_i do
  begin
    json.I := i;
    strVal := json.StringOf('pins[i]');
    i := i + 1;
  end;

i := 0;
count_i := json.SizeOfArray('pin.user.changePermission');
while i < count_i do
  begin
    json.I := i;
    strVal := json.StringOf('pin.user.changePermission[i]');
    i := i + 1;
  end;

i := 0;
count_i := json.SizeOfArray('pin.user.unblockPermission');
while i < count_i do
  begin
    json.I := i;
    strVal := json.StringOf('pin.user.unblockPermission[i]');
    i := i + 1;
  end;

i := 0;
count_i := json.SizeOfArray('pin.admin.changePermission');
while i < count_i do
  begin
    json.I := i;
    strVal := json.StringOf('pin.admin.changePermission[i]');
    i := i + 1;
  end;

i := 0;
count_i := json.SizeOfArray('pin.role3.changePermission');
while i < count_i do
  begin
    json.I := i;
    strVal := json.StringOf('pin.role3.changePermission[i]');
    i := i + 1;
  end;

i := 0;
count_i := json.SizeOfArray('pin.role3.unblockPermission');
while i < count_i do
  begin
    json.I := i;
    strVal := json.StringOf('pin.role3.unblockPermission[i]');
    i := i + 1;
  end;

i := 0;
count_i := json.SizeOfArray('pin.role4.changePermission');
while i < count_i do
  begin
    json.I := i;
    strVal := json.StringOf('pin.role4.changePermission[i]');
    i := i + 1;
  end;

i := 0;
count_i := json.SizeOfArray('importSupport');
while i < count_i do
  begin
    json.I := i;
    strVal := json.StringOf('importSupport[i]');
    i := i + 1;
  end;

i := 0;
count_i := json.SizeOfArray('algorithms');
while i < count_i do
  begin
    json.I := i;
    strVal := json.StringOf('algorithms[i]');
    i := i + 1;
  end;

i := 0;
count_i := json.SizeOfArray('paddingSchemes');
while i < count_i do
  begin
    json.I := i;
    strVal := json.StringOf('paddingSchemes[i]');
    i := i + 1;
  end;

i := 0;
count_i := json.SizeOfArray('chainingModes');
while i < count_i do
  begin
    json.I := i;
    strVal := json.StringOf('chainingModes[i]');
    i := i + 1;
  end;

// Delete the context when finished with the card.
success := scmd.DeleteContext();
if (success = 0) then
  begin
    Memo1.Lines.Add(scmd.LastErrorText);
  end;
end;