Lexoffice.login

import hashlib import secrets import requests from urllib.parse import urlencode, urlparse, parse_qs class LexofficeLogin: AUTH_URL = "https://login.lexoffice.io/connect/authorize" TOKEN_URL = "https://login.lexoffice.io/connect/token"

lexoffice’s strength is strict PKCE enforcement and well‑structured OpenID Connect Discovery ( /.well-known/openid-configuration ). The lexoffice.login mechanism is a robust implementation of OAuth 2.0 + PKCE, suitable for both server‑side and public client applications. Developers must correctly generate the PKCE pair, validate the state parameter, and store tokens securely. By following the reference implementation and security recommendations in this paper, integration can achieve both usability and a high security level. lexoffice.login

– The author declares no affiliation with lexoffice GmbH. This paper is for educational purposes. This paper provides a complete, actionable analysis of lexoffice.login suitable for a developer audience, a software architecture review, or a student project in API security. import hashlib import secrets import requests from urllib

# Exchange data = "grant_type": "authorization_code", "code": auth_code, "redirect_uri": self.redirect_uri, "client_id": self.client_id, "code_verifier": self.code_verifier resp = requests.post(self.TOKEN_URL, data=data) resp.raise_for_status() tokens = resp.json() return tokens # contains access_token, refresh_token, expires_in This paper provides a complete, actionable analysis of