(Android™) PKCS11 Get Token Info

See more PKCS11 Examples

Example showing how to discover the readers (slots) and smart cards and tokens available through a vendor's PKCS11 Cryptoki module, and get token information for each.

Chilkat Android™ Downloads Android™ Java Libraries Android C/C++ Libraries

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

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

    // Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

    CkPkcs11 pkcs11 = new CkPkcs11();

    // Specify the vendor's Cryptoki module DLL / shared lib.
    // The following PKCS11 driver DLL is for the WatchData ProxKey USB token. 
    // You would use your smartcard/token vendor's PKCS11 driver DLL.
    pkcs11.put_SharedLibPath("SignatureP11.dll");

    boolean success = pkcs11.Initialize();
    if (success == false) {
        Log.i(TAG, pkcs11.lastErrorText());
        return;
        }

    // Call Discover to discover what's available.
    // Indicate that we only want to return slots (readers) where tokens (or smart cards) are present.
    boolean onlyTokensPresent = true;
    CkJsonObject json = new CkJsonObject();
    success = pkcs11.Discover(onlyTokensPresent,json);
    if (success == false) {
        Log.i(TAG, pkcs11.lastErrorText());
        return;
        }

    json.put_EmitCompact(false);
    Log.i(TAG, json.emit());

    // Sample JSON output.
    // Code for parsing this JSON is shown below..

    // {
    //   "cryptokiVersion": {
    //     "major": 2,
    //     "minor": 10
    //   },
    //   "manufacturerID": "WatchData",
    //   "libraryDescription": "PKCS#11 cryptoki module",
    //   "libraryVersion": {
    //     "major": 3,
    //     "minor": 10
    //   },
    //   "slot": [
    //     {
    //       "id": 16385,
    //       "slotDescription": "Watchdata IC CARD Reader/Writer",
    //       "manufacturerID": "Watchdata",
    //       "tokenPresent": true,
    //       "removableDevice": true,
    //       "hardwareSlot": true,
    //       "hardwareVersion": {
    //         "major": 1,
    //         "minor": 0
    //       },
    //       "firmwareVersion": {
    //         "major": 1,
    //         "minor": 0
    //       },
    //       "token": {
    //         "label": "WD PROXKey",
    //         "manufacturerID": "Watchdata Corp.",
    //         "model": "TimeCos/PK",
    //         "serialNumber": "WD05376504",
    //         "flags": [
    //           "CKF_RNG",
    //           "CKF_LOGIN_REQUIRED",
    //           "CKF_USER_PIN_INITIALIZED",
    //           "CKF_DUAL_CRYPTO_OPERATIONS",
    //           "CKF_TOKEN_INITIALIZED"
    //         ],
    //         "maxSessionCount": 0,
    //         "sessionCount": 0,
    //         "maxRwSessionCount": 0,
    //         "rwSessionCount": 0,
    //         "maxPinLen": 32,
    //         "minPinLen": 6,
    //         "totalPublicMemory": 61440,
    //         "freePublicMemory": 70144,
    //         "totalPrivateMemory": 61440,
    //         "freePrivateMemory": 70144,
    //         "hardwareVersion": {
    //           "major": 2,
    //           "minor": 1
    //         },
    //         "firmwareVersion": {
    //           "major": 0,
    //           "minor": 0
    //         },
    //         "utcTime": "2024011509254600",
    //         "mechanism": [
    //           "CKM_RSA_PKCS_KEY_PAIR_GEN",
    //           "CKM_EC_KEY_PAIR_GEN",
    //           "CKM_DES_KEY_GEN",
    //           "80000001",
    //           "8000000B",
    //           "CKM_AES_KEY_GEN",
    //           "CKM_DES2_KEY_GEN",
    //           "CKM_DES3_KEY_GEN",
    //           "CKM_RSA_PKCS",
    //           "CKM_RSA_X_509",
    //           "CKM_ECDSA",
    //           "CKM_ECDSA_SHA1",
    //           "CKM_MD2_RSA_PKCS",
    //           "CKM_MD5_RSA_PKCS",
    //           "CKM_SHA1_RSA_PKCS",
    //           "CKM_SHA256_RSA_PKCS",
    //           "CKM_DES_ECB",
    //           "CKM_DES_CBC",
    //           "CKM_DES_CBC_PAD",
    //           "80000002",
    //           "CKM_CPK_ECDSA",
    //           "CKM_CPK_ECDSA_SHA1",
    //           "8000000C",
    //           "8000000D",
    //           "8000000E",
    //           "CKM_AES_ECB",
    //           "CKM_AES_CBC",
    //           "CKM_AES_CBC_PAD",
    //           "CKM_DES3_ECB",
    //           "CKM_DES3_CBC",
    //           "CKM_DES3_CBC_PAD",
    //           "CKM_SHA_1",
    //           "CKM_SHA_1_HMAC",
    //           "CKM_SHA_1_HMAC_GENERAL",
    //           "CKM_SHA256",
    //           "CKM_SHA256_HMAC",
    //           "CKM_SHA256_HMAC_GENERAL",
    //           "CKM_MD2",
    //           "CKM_MD2_HMAC",
    //           "CKM_MD2_HMAC_GENERAL",
    //           "CKM_MD5",
    //           "CKM_MD5_HMAC",
    //           "CKM_MD5_HMAC_GENERAL",
    //           "CKM_SSL3_PRE_MASTER_KEY_GEN",
    //           "CKM_SSL3_MASTER_KEY_DERIVE",
    //           "CKM_SSL3_KEY_AND_MAC_DERIVE",
    //           "CKM_SSL3_MD5_MAC",
    //           "CKM_SSL3_SHA1_MAC"
    //         ],
    //         "rsa": {
    //           "minKeySize": 1024,
    //           "maxKeySize": 4096
    //         }
    //       }
    //     }
    //   ]
    // }

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

    int id;
    String slotDescription;
    boolean tokenPresent;
    boolean removableDevice;
    boolean hardwareSlot;
    int hardwareVersionMajor;
    int hardwareVersionMinor;
    int firmwareVersionMajor;
    int firmwareVersionMinor;
    String tokenLabel;
    String tokenManufacturerID;
    String tokenModel;
    String tokenSerialNumber;
    int tokenMaxSessionCount;
    int tokenSessionCount;
    int tokenMaxRwSessionCount;
    int tokenRwSessionCount;
    int tokenMaxPinLen;
    int tokenMinPinLen;
    int tokenTotalPublicMemory;
    int tokenFreePublicMemory;
    int tokenTotalPrivateMemory;
    int tokenFreePrivateMemory;
    int tokenHardwareVersionMajor;
    int tokenHardwareVersionMinor;
    int tokenFirmwareVersionMajor;
    int tokenFirmwareVersionMinor;
    String tokenUtcTime;
    int tokenRsaMinKeySize;
    int tokenRsaMaxKeySize;
    int j;
    int count_j;
    String strVal;
    String tokenFlag;

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

    int cryptokiVersionMajor = json.IntOf("cryptokiVersion.major");
    int cryptokiVersionMinor = json.IntOf("cryptokiVersion.minor");
    String manufacturerID = json.stringOf("manufacturerID");
    String libraryDescription = json.stringOf("libraryDescription");
    int libraryVersionMajor = json.IntOf("libraryVersion.major");
    int libraryVersionMinor = json.IntOf("libraryVersion.minor");
    int i = 0;
    int count_i = json.SizeOfArray("slot");
    while (i < count_i) {
        json.put_I(i);
        id = json.IntOf("slot[i].id");
        slotDescription = json.stringOf("slot[i].slotDescription");
        manufacturerID = json.stringOf("slot[i].manufacturerID");
        tokenPresent = json.BoolOf("slot[i].tokenPresent");
        removableDevice = json.BoolOf("slot[i].removableDevice");
        hardwareSlot = json.BoolOf("slot[i].hardwareSlot");
        hardwareVersionMajor = json.IntOf("slot[i].hardwareVersion.major");
        hardwareVersionMinor = json.IntOf("slot[i].hardwareVersion.minor");
        firmwareVersionMajor = json.IntOf("slot[i].firmwareVersion.major");
        firmwareVersionMinor = json.IntOf("slot[i].firmwareVersion.minor");
        tokenLabel = json.stringOf("slot[i].token.label");
        tokenManufacturerID = json.stringOf("slot[i].token.manufacturerID");
        tokenModel = json.stringOf("slot[i].token.model");
        tokenSerialNumber = json.stringOf("slot[i].token.serialNumber");
        tokenMaxSessionCount = json.IntOf("slot[i].token.maxSessionCount");
        tokenSessionCount = json.IntOf("slot[i].token.sessionCount");
        tokenMaxRwSessionCount = json.IntOf("slot[i].token.maxRwSessionCount");
        tokenRwSessionCount = json.IntOf("slot[i].token.rwSessionCount");
        tokenMaxPinLen = json.IntOf("slot[i].token.maxPinLen");
        tokenMinPinLen = json.IntOf("slot[i].token.minPinLen");
        tokenTotalPublicMemory = json.IntOf("slot[i].token.totalPublicMemory");
        tokenFreePublicMemory = json.IntOf("slot[i].token.freePublicMemory");
        tokenTotalPrivateMemory = json.IntOf("slot[i].token.totalPrivateMemory");
        tokenFreePrivateMemory = json.IntOf("slot[i].token.freePrivateMemory");
        tokenHardwareVersionMajor = json.IntOf("slot[i].token.hardwareVersion.major");
        tokenHardwareVersionMinor = json.IntOf("slot[i].token.hardwareVersion.minor");
        tokenFirmwareVersionMajor = json.IntOf("slot[i].token.firmwareVersion.major");
        tokenFirmwareVersionMinor = json.IntOf("slot[i].token.firmwareVersion.minor");
        tokenUtcTime = json.stringOf("slot[i].token.utcTime");
        tokenRsaMinKeySize = json.IntOf("slot[i].token.rsa.minKeySize");
        tokenRsaMaxKeySize = json.IntOf("slot[i].token.rsa.maxKeySize");

        // The following token flag strings are possible:

        // CKF_RNG: has random # generator

        // CKF_WRITE_PROTECTED: token is write-protected

        // CKF_LOGIN_REQUIRED:user must login

        // CKF_USER_PIN_INITIALIZED:normal user's PIN is set

        // CKF_RESTORE_KEY_NOT_NEEDED: Every time the state of cryptographic operations of a session is
        //    successfully saved, all keys needed to continue those operations are stored in the state

        // CKF_CLOCK_ON_TOKEN: The token has some sort of clock.  The time on the clock is returned in the slot[i].token.utcTime

        // CKF_PROTECTED_AUTHENTICATION_PATH: There is some way for the user to login without sending a PIN through the Cryptoki library itself

        // CKF_DUAL_CRYPTO_OPERATIONS: A single session with the token can perform dual simultaneous cryptographic operations
        //    (digest and encrypt; decrypt and digest; sign and encrypt; and decrypt and sign)

        // CKF_TOKEN_INITIALIZED: The token has been initialized.

        // CKF_SECONDARY_AUTHENTICATION: The token supports secondary authentication for private key objects.

        // CKF_USER_PIN_COUNT_LOW: An incorrect user login PIN has been entered at least once since the last successful authentication.

        // CKF_USER_PIN_FINAL_TRY: Supplying an incorrect user PIN will it to become locked.

        // CKF_USER_PIN_LOCKED: The user PIN has been locked. User login to the token is not possible.

        // CKF_USER_PIN_TO_BE_CHANGED: The user PIN value is the default value set by token initialization or manufacturing,
        //    or the PIN has been expired by the card.

        // CKF_SO_PIN_COUNT_LOW: An incorrect SO login PIN has been entered at least once since the last successful authentication.

        // CKF_SO_PIN_FINAL_TRY: Supplying an incorrect SO PIN will it to become locked.

        // CKF_SO_PIN_LOCKED: The SO PIN has been locked. SO login to the token is not possible.

        // CKF_SO_PIN_TO_BE_CHANGED: The SO PIN value is the default value set by token initialization or manufacturing,
        //    or the PIN has been expired by the card.

        // To see if particular flags are present:
        CkJsonArray aFlags = json.ArrayOf("slot[i].token.flags");
        if (aFlags.FindString("CKF_USER_PIN_LOCKED",true) >= 0) {
            Log.i(TAG, "The token is locked.");
            }

        if (aFlags.FindString("CKF_RNG",true) >= 0) {
            Log.i(TAG, "The token has a random number generator.");
            }

        // ...

        // To iterate over all flags..
        j = 0;
        count_j = json.SizeOfArray("slot[i].token.flags");
        while (j < count_j) {
            json.put_J(j);
            tokenFlag = json.stringOf("slot[i].token.flags[j]");
            j = j + 1;
            }

        j = 0;
        count_j = json.SizeOfArray("slot[i].token.mechanism");
        while (j < count_j) {
            json.put_J(j);
            strVal = json.stringOf("slot[i].token.mechanism[j]");
            j = j + 1;
            }

        i = i + 1;
        }


  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}