What is JSON Web Token?

JSON Web Token (JWT) is an open standard
(RFC 7519) that defines a compact and
self-contained way for securely transmitting
information between parties as a JSON object. This
information can be verified and trusted because it
is digitally signed. JWTs can be signed using a
secret (with the HMAC algorithm) or a
public/private key pair using RSA or ECDSA.

When should you use JSON Web Tokens?

• Authorization
• Information Exchange

What is the JSON Web Token structure?
In its compact form, JSON Web Tokens consist of three parts
separated by dots (.), which are:

• Header
• Payload
• Signature Therefore, a JWT typically looks like the following.
  xxxxx.yyyyy.zzzzz