Master the Matrix

JSON Web Token - (JWT) A JSON Web Token (JWT) is a compact, URL-safe means of representing claims (information) to be transferred between two parties. It is a security mechanism used primarily for authentication and authorization in web applications, allowing a server to verify a user's identity and permissions securely. Since a JWT is digitally signed using a secret or a public/private key pair, its contents can be verified and trusted. JWTs can be used for stateful or stateless sessions, commonly replacing traditional server-side session management. JWT Structure A JWT is a string composed of three distinct parts, separated by dots (.), typically looking like this: header.payload.signature . 1. Header The header contains metadata about the token itself, specifically the type of token and the hashing algorithm used for the signature. Algorithm: (alg) This specifies the algorithm used to sign the token. The server will use this algorithm, along with the secret, to gener...