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(VB.NET) 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.

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' 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 Chilkat.Pkcs11

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

Dim success As Boolean = pkcs11.Initialize()
If (success = False) Then
    Debug.WriteLine(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 Boolean = True
Dim json As New Chilkat.JsonObject
success = pkcs11.Discover(onlyTokensPresent,json)
If (success = False) Then
    Debug.WriteLine(pkcs11.LastErrorText)
    Exit Sub
End If


json.EmitCompact = False
Debug.WriteLine(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 Integer
Dim slotDescription As String
Dim tokenPresent As Boolean
Dim removableDevice As Boolean
Dim hardwareSlot As Boolean
Dim hardwareVersionMajor As Integer
Dim hardwareVersionMinor As Integer
Dim firmwareVersionMajor As Integer
Dim firmwareVersionMinor As Integer
Dim tokenLabel As String
Dim tokenManufacturerID As String
Dim tokenModel As String
Dim tokenSerialNumber As String
Dim tokenMaxSessionCount As Integer
Dim tokenSessionCount As Integer
Dim tokenMaxRwSessionCount As Integer
Dim tokenRwSessionCount As Integer
Dim tokenMaxPinLen As Integer
Dim tokenMinPinLen As Integer
Dim tokenTotalPublicMemory As Integer
Dim tokenFreePublicMemory As Integer
Dim tokenTotalPrivateMemory As Integer
Dim tokenFreePrivateMemory As Integer
Dim tokenHardwareVersionMajor As Integer
Dim tokenHardwareVersionMinor As Integer
Dim tokenFirmwareVersionMajor As Integer
Dim tokenFirmwareVersionMinor As Integer
Dim tokenUtcTime As String
Dim tokenRsaMinKeySize As Integer
Dim tokenRsaMaxKeySize As Integer
Dim j As Integer
Dim count_j As Integer
Dim strVal As String

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

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

 

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