What is secret key for JWT based authentication and how to generate it? Now what is this secret key and how to generate this secret key?? How to generate. The following shows a JWT that has the previous header and payload encoded, and it is signed with a secret. If you want to play with JWT and put these concepts into practice, you can use jwt.io Debugger to decode, verify, and generate JWTs. How do JSON Web Tokens work?
JSON Web Tokens (JWT) can be integrityprotected with a hash-based message authenticationcode(HMAC). The producer and consumer must posses a shared secret, negotiatedthrough some out-of-band mechanism before the JWS-protected object iscommunicated (unless the producer secures the JWS object for itself).
The Nimbus JOSE+JWT library supports all standardJWS algorithms for HMAC protection (note the minimum secret lengthrequirement):
- HS256 - HMAC with SHA-256, requires 256+ bit secret
- HS384 - HMAC with SHA-384, requires 384+ bit secret
- HS512 - HMAC with SHA-512, requires 512+ bit secret
The JWT includes a set of claimsor assertions, packaged in a JSON object. Note that the SignedJWT.verifymethod only checks the validity of the HMAC. The claims, which treatment isapplication specific, must therefore be subsequently checked by yourapplication code.
Generate Sha Key For Jwt Job
Example code: