Chilkat2-Python

(PKCS11) Use a Smart Card Certificate + Private Key for SSL/TLS Authentication

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Demonstrates how to use a certificate + private key located on a smart card for the TLS client certificate in an HTTPS request. Chilkat2-Python

import sys
import chilkat2

success = 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.

pkcs11 = chilkat2.Pkcs11()

# Set your shared lib path -- either a full path to the DLL, .so, or .dylib,
# or just the filename if the driver is in a location that can be automatically found. (Such as in C:\Windows\System32)
pkcs11.SharedLibPath = "C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll"

success = pkcs11.Initialize()
if (success == False):
    print(pkcs11.LastErrorText)
    sys.exit()

# Pass -1 for the slotID to open a session on the first non-empty slot.
slotID = -1

# Open a session.
readWrite = True
success = pkcs11.OpenSession(slotID,readWrite)
if (success == False):
    print(pkcs11.LastErrorText)
    sys.exit()

# Make it an authenticated session by calling Login.
# 
# If we don't authenticate, then we won't be able to see the private keys, and thus
# we won't know which certificates have an associated private key stored on the smart card.

# The smart card PIN is passed to the Login method.
# userType 1 indicates a "Normal User".
userType = 1
pin = "0000"
success = pkcs11.Login(userType,pin)
if (success == False):
    print(pkcs11.LastErrorText)
    success = pkcs11.CloseSession()
    sys.exit()

cert = chilkat2.Cert()

# Find a certificate by the Subject Common Name
success = pkcs11.FindCert("subjectCN","BadSSL Client Certificate",cert)
if (success == True):
    print("Found: " + cert.SubjectCN)
else:
    print("Not found: " + cert.SubjectCN)
    success = pkcs11.CloseSession()
    sys.exit()

print("Successfully loaded the cert object from the smart card / USB token.")

# Note: When successful, the cert object is internally linked to the Pkcs11 object's authenticated session.
# The cert object can now be used to sign or do other cryptographic operations that occur on the smart card / USB token.

# ------------------------------------------------------------------------------------------------------------

# Send an HTTPS request to https://client.badssl.com
# https://client.badssl.com (part of the badssl.com service) lets you test authentication using client SSL certificates. 
# The client certificate can be downloaded from https://badssl.com/download/.
# This server returns 200 OK if the correct client certificate is provided, and 400 Bad Request otherwise.

http = chilkat2.Http()

# Provide the client certificate (linked internally to our authenticated smartcard session)
success = http.SetSslClientCert(cert)
if (success == False):
    print(http.LastErrorText)
    success = pkcs11.CloseSession()
    sys.exit()

responseBody = http.QuickGetStr("https://client.badssl.com/")
if (http.LastMethodSuccess == False):
    print(http.LastErrorText)
    success = pkcs11.CloseSession()
    sys.exit()

print("Response status code: " + str(http.LastStatus))
print("Response body: ")
print(responseBody)

# ------------------------------------------------------------------------------------------------------------
# Revert to an unauthenticated session by calling Logout.
success = pkcs11.Logout()
if (success == False):
    print(pkcs11.LastErrorText)
    success = pkcs11.CloseSession()
    sys.exit()

# When finished, close the session.
# It is important to close the session (memory leaks will occur if the session is not properly closed).
success = pkcs11.CloseSession()
if (success == False):
    print(pkcs11.LastErrorText)
    sys.exit()

print("Success.")