What is signed JWT token?

JSON Web Token (JWT, pronounced /dʒɒt/, same as the word “jot”) is a proposed Internet standard for creating data with optional signature and/or optional encryption whose payload holds JSON that asserts some number of claims. The tokens are signed either using a private secret or a public/private key.

What is signing in encryption?

Encryption uses a key to ensure the ciphertext cannot be deciphered by anyone but the authorized recipient. Signing of data works to authenticate the sender of the data and tends to implement a form of encryption in its process.

Should I encrypt token?

If you believe you can protect the encryption key better than the database storage/access, e.g. by using an HSM or secure file storage, then it makes sense to encrypt the token with such a key before storing it.

What happens when JWT token expires?

Once the access token expires, your client (application calling your API) should contact your DB ( Authorisation Server ) and exchange its refresh token for a new access token – and usually a new refresh token – providing the user is still a valid user on your DB and the user has not revoked access for the client …

What is a token claim?

JSON web tokens (JWTs) claims are pieces of information asserted about a subject. For example, an ID token (which is always a JWT) can contain a claim called name that asserts that the name of the user authenticating is “John Doe”.

What is AUD claim?

The “aud” (audience) claim identifies the recipients that the JWT is intended for. Each principal intended to process the JWT MUST identify itself with a value in the audience claim. In the special case when the JWT has one audience, the “aud” value MAY be a single case-sensitive string containing a StringOrURI value.

How do I encrypt a JWT token in node JS?

email }; //Sign the JWT token and populate the payload with the user email and id const token = jwt. sign({ user: body }, PRIV_KEY, { algorithm: ‘RS256’ }); //Send back the token to the user return res. json({ token }); }); } catch (error) { return next(error); } })(req, res, next); });