B4X

PKCS11 Find all Public Keys

See more PKCS11 Examples

Demonstrates how to list all public keys on an HSM.

Note: This example requires Chilkat v9.5.0.96 or later.

B4X

Dim success As Boolean = False

'  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 ChilkatPkcs11
pkcs11.Initialize

'  Use the PKCS11 driver (.dll, .so, .dylib) for your particular HSM.
'  (The format of the path will change with the operating system.  Obviously, "C:/" is not used on non-Windows systems.
pkcs11.SharedLibPath = "C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll"

'  Establish a logged-on session. (We can typically skip the login by passing an empty PIN if only needing to list public keys)
'  Use your actual PIN here, or an empty string to skip login.
Dim pin As String = "0000"
Dim userType As Int = 1
success = pkcs11.QuickSession(userType, pin)
If success = False Then
    Log(pkcs11.LastErrorText)
    Return
End If


'  Note: To find public keys, we need a session, but it doesn't necessarily need to be logged-on.

Dim json As ChilkatJsonObject
json.Initialize
json.EmitCompact = False

success = pkcs11.FindAllKeys("public", json)
If success = False Then
    Log(pkcs11.LastErrorText)
    Return
End If


Log(json.Emit)

'  Sample output, with parsing code below..

'  {
'    "keys": [
'      {
'        "handle": 74842125,
'        "id": "0001020304",
'        "key_type": "RSA",
'        "label": "Chilkat Software, Inc.",
'        "modulus": "twVRf6O ... Rwa1ebFY0=",
'        "exponent": "AAEAAQ=="
'      },
'      {
'        "handle": 18415630,
'        "id": "010203040A0B0C0D0E0F",
'        "key_type": "RSA",
'        "label": "ehealth private key",
'        "modulus": "qdKjhOwA1 ... A4MtX8BYgHmLw==",
'        "exponent": "AAEAAQ=="
'      },
'      {
'        "handle": 3735567,
'        "id": "D531B4B8F308489DA58350596178845973A4562E",
'        "key_type": "RSA",
'        "label": "d531b4b8-f308-489d-a583-505961788459",
'        "modulus": "r0MmXRKBP ... HAd1kUPsNyzcQ==",
'        "exponent": "AAEAAQ=="
'      },
'      {
'        "handle": 238092304,
'        "id": "0A0B0C0D01020304",
'        "key_type": "RSA",
'        "label": "MySshKey",
'        "modulus": "ykFHcfBFOq ... rfXBK/6g9t+S6UjJ1kUQ==",
'        "exponent": "AAEAAQ=="
'      },
'      {
'        "handle": 49348625,
'        "id": "48656C6C6F",
'        "key_type": "RSA",
'        "label": "2048-bit RSA key for testing",
'        "modulus": "vReVaJzXZYIOB ... kamD/8iNvhAKlKbQ==",
'        "exponent": "AAEAAQ=="
'      }
'    ]
'  }

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

Dim handle As Int
Dim id As String
Dim key_type As String
Dim label As String
Dim modulus As String
Dim exponent As String

Dim i As Int = 0
Dim count_i As Int = json.SizeOfArray("keys")
Do While i < count_i
    json.I = i
    handle = json.IntOf("keys[i].handle")
    id = json.StringOf("keys[i].id")
    key_type = json.StringOf("keys[i].key_type")
    label = json.StringOf("keys[i].label")
    modulus = json.StringOf("keys[i].modulus")
    exponent = json.StringOf("keys[i].exponent")
    i = i + 1
Loop

pkcs11.Logout
pkcs11.CloseSession