(Visual Basic 6.0) PKCS11 Discover Readers and Smart Cards / Tokens

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.

Note: This example requires Chilkat v9.5.0.88 or later.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

' 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.

Dim pkcs11 As New ChilkatPkcs11

' Specify the vendor's Cryptoki module DLL / shared lib.
pkcs11.SharedLibPath = "aetpkss1.dll"

Dim success As Long
success = pkcs11.Initialize()
If (success = 0) Then
    Debug.Print pkcs11.LastErrorText
    Exit Sub
End If

' Call Discover to discover what's available.
' Indicate that we only want to return slots (readers) where tokens (smart cards) are present.
' (If the device is a USB token, such as an ePass300Auto, then by definition it has a "token" present.)
Dim onlyTokensPresent As Long
onlyTokensPresent = 1
Dim json As New ChilkatJsonObject
success = pkcs11.Discover(onlyTokensPresent,json)
If (success = 0) Then
    Debug.Print pkcs11.LastErrorText
    Exit Sub
End If

json.EmitCompact = 0
Debug.Print json.Emit()

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

' {
'   "cryptokiVersion": {
'     "major": 2,
'     "minor": 20
'   },
'   "manufacturerID": "A.E.T. Europe B.V.",
'   "libraryDescription": "Cryptographic Token Interface",
'   "libraryVersion": {
'     "major": 3,
'     "minor": 0
'   },
'   "slot": [
'     {
'       "id": 52482,
'       "slotDescription": "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0",
'       "manufacturerID": "SCM Microsystems Inc. SCR33x USB",
'       "tokenPresent": true,
'       "removableDevice": true,
'       "hardwareSlot": true,
'       "hardwareVersion": {
'         "major": 0,
'         "minor": 0
'       },
'       "firmwareVersion": {
'         "major": 0,
'         "minor": 0
'       },
'       "token": {
'         "label": "chilkat",
'         "manufacturerID": "A.E.T. Europe B.V.",
'         "model": "19C40406010D00C0",
'         "serialNumber": "21619600583C4505",
'         "flags": [
'           "CKF_RNG",
'           "CKF_LOGIN_REQUIRED",
'           "CKF_USER_PIN_INITIALIZED",
'           "CKF_TOKEN_INITIALIZED"
'         ],
'         "maxSessionCount": 126,
'         "sessionCount": 0,
'         "maxRwSessionCount": 126,
'         "rwSessionCount": 0,
'         "maxPinLen": 15,
'         "minPinLen": 4,
'         "totalPublicMemory": 32767,
'         "freePublicMemory": 32767,
'         "totalPrivateMemory": 32767,
'         "freePrivateMemory": 32767,
'         "hardwareVersion": {
'           "major": 0,
'           "minor": 0
'         },
'         "firmwareVersion": {
'           "major": 0,
'           "minor": 0
'         },
'         "utcTime": "",
'         "rsa": {
'           "minKeySize": 768,
'           "maxKeySize": 2048
'         },
'         "mechanism": [
'           "CKM_RSA_PKCS",
'           "CKM_RSA_X_509",
'           "CKM_RSA_PKCS_OAEP",
'           "CKM_MD5_RSA_PKCS",
'           "CKM_SHA1_RSA_PKCS",
'           "CKM_SHA224_RSA_PKCS",
'           "CKM_SHA256_RSA_PKCS",
'           "CKM_SHA384_RSA_PKCS",
'           "CKM_SHA512_RSA_PKCS",
'           "CKM_RIPEMD160_RSA_PKCS",
'           "CKM_CPK_ECDSA",
'           "CKM_CPK_ECDSA_SHA1",
'           "CKM_CPK_ECIES",
'           "CKM_CPK_ECIES_STDDH_SHA1KDF_DES3CBC_PAD_SHA1HMAC",
'           "CKM_CPK_ECIES_STDDH_SHA1KDF_AES128CBC_PAD_SHA1HMAC",
'           "CKM_CPK_PKCS7_SIGNED",
'           "CKM_CPK_PKCS7_ENVELOPE_DES3CBC_PAD",
'           "CKM_RSA_PKCS_PSS",
'           "CKM_RSA_PKCS_KEY_PAIR_GEN",
'           "CKM_RC2_KEY_GEN",
'           "CKM_RC2_ECB",
'           "CKM_RC2_CBC",
'           "CKM_RC2_CBC_PAD",
'           "CKM_RC4_KEY_GEN",
'           "CKM_RC4",
'           "CKM_DES_KEY_GEN",
'           "CKM_DES2_KEY_GEN",
'           "CKM_DES3_KEY_GEN",
'           "CKM_DES_ECB",
'           "CKM_DES_CBC",
'           "CKM_DES3_ECB",
'           "CKM_DES3_CBC",
'           "CKM_DES_CBC_PAD",
'           "CKM_DES3_CBC_PAD",
'           "CKM_MD5",
'           "CKM_SHA_1",
'           "CKM_SHA224",
'           "CKM_SHA256",
'           "CKM_SHA384",
'           "CKM_SHA512",
'           "CKM_RIPEMD160"
'         ]
'       }
'     }
'   ]
' }

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

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

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

Dim cryptokiVersionMajor As Long
cryptokiVersionMajor = json.IntOf("cryptokiVersion.major")
Dim cryptokiVersionMinor As Long
cryptokiVersionMinor = json.IntOf("cryptokiVersion.minor")
Dim manufacturerID As String
manufacturerID = json.StringOf("manufacturerID")
Dim libraryDescription As String
libraryDescription = json.StringOf("libraryDescription")
Dim libraryVersionMajor As Long
libraryVersionMajor = json.IntOf("libraryVersion.major")
Dim libraryVersionMinor As Long
libraryVersionMinor = json.IntOf("libraryVersion.minor")
Dim i As Long
i = 0
Dim count_i As Long
count_i = json.SizeOfArray("slot")
Do While i < count_i
    json.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")
    j = 0
    count_j = json.SizeOfArray("slot[i].token.flags")
    Do While j < count_j
        json.J = j
        strVal = json.StringOf("slot[i].token.flags[j]")
        j = j + 1
    Loop
    j = 0
    count_j = json.SizeOfArray("slot[i].token.mechanism")
    Do While j < count_j
        json.J = j
        strVal = json.StringOf("slot[i].token.mechanism[j]")
        j = j + 1
    Loop
    i = i + 1
Loop