2022-10-03 14:10:36 +00:00
|
|
|
from fido2.webauthn import AttestedCredentialData
|
|
|
|
import random
|
|
|
|
import string
|
|
|
|
import secrets
|
|
|
|
import math
|
|
|
|
|
|
|
|
def verify(MC, GA, client_data_hash):
|
|
|
|
credential_data = AttestedCredentialData(MC.auth_data.credential_data)
|
|
|
|
GA.verify(client_data_hash, credential_data.public_key)
|
|
|
|
|
|
|
|
|
|
|
|
def generate_random_user():
|
|
|
|
# https://www.w3.org/TR/webauthn/#user-handle
|
|
|
|
user_id_length = random.randint(1, 64)
|
|
|
|
user_id = secrets.token_bytes(user_id_length)
|
|
|
|
|
|
|
|
# https://www.w3.org/TR/webauthn/#dictionary-pkcredentialentity
|
|
|
|
name = "User name"
|
|
|
|
display_name = "Displayed " + name
|
|
|
|
|
2022-10-04 14:58:03 +00:00
|
|
|
return {"id": user_id, "name": name, "displayName": display_name}
|
2022-10-03 14:10:36 +00:00
|
|
|
|
|
|
|
counter = 1
|
|
|
|
def generate_user_maximum():
|
|
|
|
"""
|
|
|
|
Generate RK with the maximum lengths of the fields, according to the minimal requirements of the FIDO2 spec
|
|
|
|
"""
|
|
|
|
global counter
|
|
|
|
|
|
|
|
# https://www.w3.org/TR/webauthn/#user-handle
|
|
|
|
user_id_length = 64
|
|
|
|
user_id = secrets.token_bytes(user_id_length)
|
|
|
|
|
|
|
|
# https://www.w3.org/TR/webauthn/#dictionary-pkcredentialentity
|
|
|
|
name = ''.join(random.choice(string.ascii_uppercase + string.ascii_lowercase + string.digits) for _ in range(64))
|
|
|
|
|
|
|
|
name = f"{counter}: {name}"
|
|
|
|
icon = "https://www.w3.org/TR/webauthn/" + "A" * 128
|
|
|
|
display_name = "Displayed " + name
|
|
|
|
|
|
|
|
name = name[:64]
|
|
|
|
display_name = display_name[:64]
|
|
|
|
icon = icon[:128]
|
|
|
|
|
|
|
|
counter += 1
|
|
|
|
|
|
|
|
return {"id": user_id, "name": name, "icon": icon, "displayName": display_name}
|
|
|
|
|
|
|
|
def shannon_entropy(data):
|
|
|
|
s = 0.0
|
|
|
|
total = len(data)
|
|
|
|
for x in range(0, 256):
|
|
|
|
freq = data.count(x)
|
|
|
|
p = freq / total
|
|
|
|
if p > 0:
|
|
|
|
s -= p * math.log2(p)
|
|
|
|
return s
|
|
|
|
|