(CkPython) PKCS11 Find Private Key by Label

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Demonstrates how to find a private key based on a user-specified label.

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

Chilkat Python Downloads install with pip pip3 install chilkat or download... Python Module for Windows, MacOS, Linux, Alpine Linux, Solaris

import sys
import chilkat

# 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.

pkcs11 = chilkat.CkPkcs11()

# Use the PKCS11 driver (.dll, .so, .dylib) for your particular HSM.
# For example:
pkcs11.put_SharedLibPath("C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS11.dll")

# Use your HSM's PIN.
pin = "0000"

# Normal user = 1
userType = 1

# Establish a logged-on user session with the HSM.
success = pkcs11.QuickSession(userType,pin)
if (success == False):
    print(pkcs11.lastErrorText())
    sys.exit()

# Provide a template to find a PKCS11 object.
jsonTemplate = chilkat.CkJsonObject()

# Find an RSA private key with the label "MySshKey".
# Here's an example of how the key was originally imported: 
# PKCS11 Import SSH Key
jsonTemplate.UpdateString("class","private_key")
jsonTemplate.UpdateString("key_type","rsa")
jsonTemplate.UpdateString("label","MySshKey")

privKeyHandle = pkcs11.FindObject(jsonTemplate)
if (privKeyHandle == 0):
    print(pkcs11.lastErrorText())
    sys.exit()

# The private key handle is only valid during the PKCS11 session.
# If you wish to use the private key in another PKCS11 session,
# you'll first need to find it.  See:  
print("private key handle: " + str(privKeyHandle))

# Do whatever you wish with the private key handle...
# ...
# ...

pkcs11.Logout()
pkcs11.CloseSession()