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Markos Gogoulos
2025-12-30 15:30:08 +02:00
parent 54a8e41f6d
commit 2c0bba1427
1 changed files with 6 additions and 5 deletions
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11
lti/adapters.py
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@@ -8,11 +8,12 @@ import json
import time import time
from typing import Any, Dict, Optional from typing import Any, Dict, Optional
import jwt
import requests import requests
from cryptography.hazmat.backends import default_backend from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives import serialization from cryptography.hazmat.primitives import serialization
from django.core.cache import cache from django.core.cache import cache
from jwcrypto import jwk, jwt from jwcrypto import jwk
from pylti1p3.message_launch import MessageLaunch from pylti1p3.message_launch import MessageLaunch
from pylti1p3.oidc_login import OIDCLogin from pylti1p3.oidc_login import OIDCLogin
from pylti1p3.registration import Registration from pylti1p3.registration import Registration
@@ -196,9 +197,11 @@ class DjangoServiceConnector(ServiceConnector):
key_obj = LTIToolKeys.get_or_create_keys() key_obj = LTIToolKeys.get_or_create_keys()
jwk_obj = jwk.JWK(**key_obj.private_key_jwk) jwk_obj = jwk.JWK(**key_obj.private_key_jwk)
pem_bytes = jwk_obj.export_to_pem(private_key=True, password=None)
private_key = serialization.load_pem_private_key(pem_bytes, password=None, backend=default_backend())
now = int(time.time()) now = int(time.time())
claims = { payload = {
'iss': self._registration.get_client_id(), 'iss': self._registration.get_client_id(),
'sub': self._registration.get_client_id(), 'sub': self._registration.get_client_id(),
'aud': self._registration.get_auth_token_url(), 'aud': self._registration.get_auth_token_url(),
@@ -207,9 +210,7 @@ class DjangoServiceConnector(ServiceConnector):
'jti': str(time.time()), 'jti': str(time.time()),
} }
jwt_token = jwt.JWT(header={'alg': 'RS256', 'kid': key_obj.private_key_jwk['kid']}, claims=claims) client_assertion = jwt.encode(payload, private_key, algorithm='RS256', headers={'kid': key_obj.private_key_jwk['kid']})
jwt_token.make_signed_token(jwk_obj)
client_assertion = jwt_token.serialize()
token_url = self._registration.get_auth_token_url() token_url = self._registration.get_auth_token_url()
data = { data = {