CNSA-276-FP/main.py

# Copyright (c) 2018 Yubico AB
# All rights reserved.
#
#   Redistribution and use in source and binary forms, with or
#   without modification, are permitted provided that the following
#   conditions are met:
#
#    1. Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#    2. Redistributions in binary form must reproduce the above
#       copyright notice, this list of conditions and the following
#       disclaimer in the documentation and/or other materials provided
#       with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

"""
Connects to the first FIDO device found (starts from USB, then looks into NFC),
creates a new credential for it, and authenticates the credential.
This works with both FIDO 2.0 devices as well as with U2F devices.
On Windows, the native WebAuthn API will be used.
"""
import time
import RPI.GPIO as GPIO
import pickle
import psycopg2
import fido2.webauthn
from fido2.hid import CtapHidDevice
from fido2.client import Fido2Client, WindowsClient, UserInteraction
from fido2.server import Fido2Server
from getpass import getpass
import sys
import ctypes
from fido2.ctap2 import Ctap2

gotAaguid = None
GPIO.setmode(GPIO.BCM)
GPIO.setup(14, GPIO.OUT)
GPIO.output(14, GPIO.LOW)
class CliInteraction(UserInteraction):
    def prompt_up(self):
        print("\nTouch your authenticator device now...\n")

    def request_pin(self, permissions, rd_id):
        return getpass("Enter PIN: ")

    def request_uv(self, permissions, rd_id):
        print("User Verification required.")
        return True

def badCred():
    print("Bad credential!")
    time.sleep(3)
while True:
    GPIO.output(14, GPIO.LOW)
    print("Waiting for device...")
    while True:
        dev = next(CtapHidDevice.list_devices(), None)

        if dev:
            ctap2 = Ctap2(dev)

            info = ctap2.get_info()
            gotAaguid = info.aaguid
            print(str(gotAaguid))
            break

        time.sleep(0.1)

    # Handle user interaction

    try:
        server = Fido2Server({"id": "example.com", "name": "Example RP"}, attestation="direct")
        uv = "discouraged"

        # Set up a FIDO 2 client using the origin https://example.com
        client = Fido2Client(dev, "https://example.com", user_interaction=CliInteraction())



        # Replace these variables with your connection parameters
        dbname = "CNSA-276-FP-DAS"
        user = "FP-DEV-USER"
        password = "purchase-immortal-prescribe-repave-detention-seizing-candied-antiques-episode-list"
        host = "postgres.eggtech.net"

        # Define the SQL query for retrieving data
        select_query = '''
        SELECT "AAGUID", credential_id, pk_algo, pk_1, pk_3, pk_neg1, pk_neg2, pk_neg3, pickled
        FROM credential_data
        WHERE "AAGUID" = %s;
        '''


        # Function to connect to the PostgreSQL database and retrieve data
        def fetch_data(aaguid):
            conn = None
            try:
                # Connect to the PostgreSQL server
                conn = psycopg2.connect(dbname=dbname, user=user, password=password, host=host)
                cur = conn.cursor()

                # Execute the SQL query
                cur.execute(select_query, (gotAaguid,))

                # Fetch the results
                result = cur.fetchone()
                if result:
                    data = {
                        "AAGUID": result[0],
                        "credential_id": result[1],
                        "pk_algo": result[2],
                        "pk_1": result[3],
                        "pk_3": result[4],
                        "pk_neg1": result[5],
                        "pk_neg2": result[6],
                        "pk_neg3": result[7],
                        "pickled": result[8]
                    }
                    return data
                else:
                    print("No data found for AAGUID:", aaguid)
                    badCred()
                    return None

                # Close communication with the database
                cur.close()
            except (Exception, psycopg2.DatabaseError) as error:
                print(error)
            finally:
                if conn is not None:
                    conn.close()


        # Example usage: Fetch data for a specific AAGUID and store in variables
        aaguid_data = fetch_data("your_specific_aaguid_here")

        if aaguid_data:
            # Store each piece of data into a separate variable
            testa = aaguid_data["AAGUID"]
            cred_id = aaguid_data["credential_id"]
            pk_algo = aaguid_data["pk_algo"]
            pk_1 = aaguid_data["pk_1"]
            pk_3 = aaguid_data["pk_3"]
            pk_neg1 = aaguid_data["pk_neg1"]
            pk_neg2 = aaguid_data["pk_neg2"]
            pk_neg3 = aaguid_data["pk_neg3"]
            pickled = aaguid_data["pickled"]


        credentials = pickle.loads(pickled)


        # Prepare parameters for getAssertion
        request_options, state = server.authenticate_begin(credentials, user_verification=uv)

        # Authenticate the credential
        result = client.get_assertion(request_options["publicKey"])

        # Only one cred in allowCredentials, only one response.
        result = result.get_response(0)

        # Complete authenticator
        server.authenticate_complete(
            state,

            credentials,
            result.credential_id,
            result.client_data,
            result.authenticator_data,
            result.signature,
        )

        print("Credential authenticated!")

        for i in range(10):
            GPIO.output(14, GPIO.HIGH)
            time.sleep(0.05)
            GPIO.output(14, GPIO.LOW)
            time.sleep(0.05)

        print("CLIENT DATA:", result.client_data)
        print()
        print("AUTH DATA:", result.authenticator_data)
        time.sleep(5)
    except Exception as e:
        print("Authentication Failed!")