What methods are used to authenticate users in abstract web services?
sobes.tech AI
Answer from AI
User authentication in web services is implemented in several ways:
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Sessions and cookies: after a successful login, the server creates a session and sends an identifier to the client in a cookie. For subsequent requests, the server checks the session.
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Tokens (JWT): after authentication, the server issues a JSON Web Token to the client, which the client sends in headers (usually Authorization: Bearer). The server verifies the signature and expiration of the token.
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Basic Auth: transmitting username and password in the HTTP header (usually over HTTPS), suitable for simple services.
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OAuth / OpenID Connect: used for authorization through third-party services (Google, Facebook, etc.), where the service receives verified user data.
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API keys: for services without users, where the client is identified by a key.
In Python, libraries such as Flask-Login for sessions, PyJWT for working with JWT, or integrations with OAuth via libraries like Authlib are often used.