Is refresh token optional?

Refresh token is optional. Implicit grant type in OAuth2 does not have the option to issue refresh tokens.

Is refresh token mandatory?

If the user token is not refreshed (user is inactive and the app is not open) and expires, they will need to log in whenever they want to resume.

Should I refresh token on every request?

No, you don’t need to refresh the token on each request. But you definitely want your JWTs to expire at some point. This is to protect you from JWT theft where malicious user could use stolen access token to gain access to target resource indefinitely.

What is the purpose of refresh token?

A refresh token is a special token that is used to obtain additional access tokens. This allows you to have short-lived access tokens without having to collect credentials every time one expires.

Should I change refresh token?

Refresh token will eventually expire or become invalid and you should be ready for it.

Is refresh token a JWT?

js of JWT with refresh token: In this case they use a uid and it’s not a JWT. When they refresh the token they send the refresh token and the user. If you implement it as a JWT, you don’t need to send the user, because it be would inside the JWT.

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Why are refresh tokens more secure?

The reason for that is the sensitivity of this piece of information. You can think of it as user credentials, since a Refresh Token allows a user to remain authenticated essentially forever. Therefore you cannot have this information in a browser, it must be stored securely.

How long is refresh token valid?

The Refresh token has a sliding window that is valid for 14 days and refresh token’s validity is for 90 days.

How do I keep my refresh token?

If you worry about long-living Refresh Token. You can skip storing it and not use it at all. Just keep Access Token in memory and do silent sign-in when Access Token expires. Don’t use Implicit flow because it’s obsolete.

How do you check token is expired or not?

This can be done using the following steps:

  1. convert expires_in to an expire time (epoch, RFC-3339/ISO-8601 datetime, etc.)
  2. store the expire time.
  3. on each resource request, check the current time against the expire time and make a token refresh request before the resource request if the access_token has expired.

Is refresh token one time use?

Ensuring refresh tokens can be used only once will significantly limit the opportunity for them to be (mis)used egregiously or maliciously.

Are refresh tokens safe?

Keeping Refresh Tokens Secure

A refresh token can help you balance security with usability. Since refresh tokens are typically longer-lived, you can use them to request new access tokens after the shorter-lived access tokens expire.

When should I call refresh token?

The client does not need the Refresh Token until the Access Token has expired. Every call needs the Access Token, but only a request to grant a new Access Token needs the Refresh Token. To obtain a new Access Token, you send a request with the grant_type set to refresh_token , as in section 6 of the RFC.

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What should happen when refresh token expires?

The member must reauthorize your application when refresh tokens expire. When you use a refresh token to generate a new access token, the lifespan or Time To Live (TTL) of the refresh token remains the same as specified in the initial OAuth flow (365 days), and the new access token has a new TTL of 60 days.

What happens if a refresh token expires?

The presence of the refresh token means that the access token will expire and you’ll be able to get a new one without the user’s interaction. The “expires” value is the number of seconds that the access token will be valid.

Should refresh token be stored in database?

You can replace the refresh token on each refresh, but remember that you need to store all expired refresh tokens until their lifetime is over. From a security perspective it makes sense to create a new token, but it is a trade off between security and amount of data in your database.