JSON Web Token (JWT) is a standards-based open data RFC 7519, which defines a compact and loose combination of data, using a JSON object transfer encrypted information between applications. The warning sign may be JSON object by checking digital signatures and, in general, the JWT can sign the data using HMAC operation, ECDSA or the RSA public / private key.
. "" There is usually a JWT the HEADER (head), the PAYLOAD (payload) and the SIGNATURE (Signed) composed of three parts, the link between the three use the following format:
header.payload.signature
The following string is a real case of JWT:
Note that there is a dot between the three ( ".") Is connected to