If the refresh token can be stolen, then so can the access token. With such an access token, the attacker can start making API calls. To make matters even more complicated, access tokens are often self-contained JWT tokens. Such tokens contain all the information needed for the API to make security decisions.
Can someone steal your token?
Free, Secure and Trusted Way to Authenticate Your Visitors
Remember, once a JWT (JSON Web Token) is stolen, it can be the worst thing for an individual and the enterprise as there’s a huge chance of data breach and exploitation.
Are 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.
Are refresh tokens secret?
Typically, refresh tokens are only used with confidential clients. However, since it is possible to use the authorization code flow without a client secret, the refresh grant may also be used by clients that don’t have a secret.
Can refresh tokens be reused?
This protection mechanism works regardless of whether the legitimate client or the malicious client is able to exchange refresh token 1 for a new token pair before the other. As soon as reuse is detected, all subsequent requests will be denied until the user re-authenticates.
Where are refresh tokens stored?
You can store encrypted tokens securely in HttpOnly cookies. 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.
Can JWT be decoded?
A valid JWT can consist of just the header and payload sections. … By design, anyone can decode a JWT and read the contents of the header and payload sections. But we need access to the secret key used to create the signature to verify a token’s integrity.
Does refresh token expire?
Refresh tokens are used to get a new access token when your current access token expires. … Day 360- If you generate a new access token, your access token and refresh token will both expire in 5 days (365-360=5) and you must get your application reauthorized by the member using the authorization flow.
Store your access token in memory, and store the refresh token in the cookie: Link to this section. Why is this safe from CSRF? Yes, a form submit to /refresh_token would work and a new access token will be returned, but the attacker can’t read the response if they’re using an HTML form.
Why is refresh token used?
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.
How do you revoke a refresh token?
To revoke a refresh token, send a POST request to https://YOUR_DOMAIN/oauth/revoke . The /oauth/revoke endpoint revokes the entire grant, not just a specific token. Use the /api/v2/device-credentials endpoint to revoke refresh tokens.
Is refresh token a JWT?
There are many types of token, although in authentication with JWT the most typical are access token and refresh token. Access token: It contains all the information the server needs to know if the user / device can access the resource you are requesting or not.
Should refresh token be stored in database?
Store refresh tokens in a secure location, such as a password-protected file system or an encrypted database. Limit access to users who need the tokens to make API calls. If you believe that a refresh token has been accessed by an unauthorized user, delete it and create a new one.
How do I know if my refresh token is expired?
This can be done using the following steps:
- convert expires_in to an expire time (epoch, RFC-3339/ISO-8601 datetime, etc.)
- store the expire time.
- 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.
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.