A JWT token typically consists of three parts:
Header: Contains metadata about the token, such as the type of token (JWT) and the signing algorithm being used (e.g., HMAC SHA256 or RSA).
Payload: Contains claims, which are statements about an entity (typically, the user) and additional data. There are three types of claims: registered, public, and private claims.
Signature: Used to verify that the sender of the JWT is who it says it is and to ensure that the message wasn't tampered with during transmission. It's created by encoding the header, payload, and a secret key (or private key) with the specified algorithm.
JWTs are typically represented as strings separated by dots (e.g., "header.payload.signature").
Tags:
Authentication & JWT