The token is mainly composed of header, payload, signature . These three parts are separated by dots(.). JWT defines the structure of information we are sending from one party to the another, and it comes in two forms – Serialized, Deserialized.
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JWTs can be signed using a secret (with the HMAC algorithm) or a public/private key pair using RSA or ECDSA . Although JWTs can be encrypted to also provide secrecy between parties, we will focus on signed tokens.
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