Why is OAuth better than basic authentication?
OAuth 2.0: OAuth represents a step forward in the use of credentials for authentication of API service users. It is a major advance on the basic HTTP access authentication method. This means that the API’s own credentials are safeguarded.
Why are tokens better than passwords?
An authentication token is not a password; it is a random value which was generated and remembered by a computer, without any human brain involved in the process. If the login and password are sent back with every request, then they are stored as a cookie on the client.
What is the purpose of OAuth?
OAuth is an authentication protocol that allows you to approve one application interacting with another on your behalf without giving away your password.
What is an OAuth access token?
OAuth Tokens. Access tokens are the token the client uses to access the Resource Server (API). They’re meant to be short-lived. Think of them in hours and minutes, not days and month. You don’t need a confidential client to get an access token.
How can I get OAuth access token?
- Obtain OAuth 2.0 credentials from the Google API Console.
- Obtain an access token from the Google Authorization Server.
- Examine scopes of access granted by the user.
- Send the access token to an API.
- Refresh the access token, if necessary.
What does access token contain?
In computer systems, an access token contains the security credentials for a login session and identifies the user, the user’s groups, the user’s privileges, and, in some cases, a particular application.
How do I login token?
- Login. The user enters their username and password.
- Login Verification & Token Generation. The server verifies that the login information is correct and generates a secure, signed token for that user at that particular time.
- Token Transmission.
- Token Verification.
- Token Deletion.
What can you do with an access token?
Once you have an access token you can use it to make calls from a mobile client, a web browser, or from your server to Facebook’s servers. If a token is obtained on a client, you can ship that token down to your server and use it in server-to-server calls.
What is an access token used for?
Access tokens are the thing that applications use to make API requests on behalf of a user. The access token represents the authorization of a specific application to access specific parts of a user’s data.
Why you should always use access tokens to secure an API?
It enables you to authorize the Web App A to access your information from Web App B, without sharing your credentials. It was built with only authorization in mind and doesn’t include any authentication mechanisms (in other words, it doesn’t give the Authorization Server any way of verifying who the user is).
What three types of information make up an access token?
Access tokens contain the following information:
- The security identifier (SID) for the user’s account.
- SIDs for the groups of which the user is a member.
- A logon SID that identifies the current logon session.
- A list of the privileges held by either the user or the user’s groups.
- An owner SID.
- The SID for the primary group.
How long should access tokens last?
for 60 days
Why do access tokens expire?
The decision on the expiry is a trade-off between user ease and security. The length of the refresh token is related to the user return length, i.e. set the refresh to how often the user returns to your app. If the refresh token doesn’t expire the only way they are revoked is with an explicit revoke.
How do I know if my access 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.
Do tokens expire?
In other words, when a client passes an access token to a server managing a resource, that server can use the information contained in the token to decide whether the client is authorized or not. Access tokens usually have an expiration date and are short-lived.
What happen when Token expired?
The access tokens may last anywhere from the current application session to a couple weeks. When the access token expires, the application will be forced to make the user sign in again, so that you as the service know the user is continually involved in re-authorizing the application.
What is token expiration?
The “expires” value is the number of seconds that the access token will be valid. You can use this to preemptively refresh your access tokens instead of waiting for a request with an expired token to fail. If you make an API request and the token has expired already, you’ll get back a response indicating as such.
How do tokens expire?
Select the application you want to configure. Go to the Settings tab. Under Refresh Token Expiration, enable Absolute Expiration. When enabled, a refresh token will expire based on an absolute lifetime, after which the token can no longer be used.
How do handle tokens expire?
The most common solution is to reduce the duration of the JWT and revoke the refresh token so that the user can’t generate a new JWT. With this setup, the JWT’s expiration duration is set to something short (5-10 minutes) and the refresh token is set to something long (2 weeks or 2 months).
Do JWT tokens expire?
Handling Access Token Expiration The JWT access token is only valid for a finite period of time. Using an expired JWT will cause operations to fail.
Where are refresh tokens stored?
Access token and refresh token shouldn’t be stored in the local/session storage, because they are not a place for any sensitive data. Hence I would store the access token in a httpOnly cookie (even though there is CSRF) and I need it for most of my requests to the Resource Server anyway.
What happens if refresh token is compromised?
The idea of refresh tokens is that if an access token is compromised, because it is short-lived, the attacker has a limited window in which to abuse it. Refresh tokens, if compromised, are useless because the attacker requires the client id and secret in addition to the refresh token in order to gain an access token.
What is the point of refresh token?
Refresh Tokens are credentials used to obtain access tokens. Refresh tokens are issued to the client by the authorization server and are used to obtain a new access token when the current access token becomes invalid or expires, or to obtain additional access tokens with identical or narrower scope.
What happens if refresh token is stolen?
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 access token be stolen?
Short answer: Yes, for OAuth2 – whoever has a valid access_token would have access to resources designated by that token. For how long depends on OAuth2 the implementation of provider. These tokens work like passwords, and if intercepted can be used immediately by an attacker.
Are refresh tokens secure?
Refresh tokens are meant for mobile apps where the refresh token can be stored securely on the phone – phones have some sort of secure storage mechanism, whereas browsers do not.
What happens if JWT token is stolen?
If a JWT is stolen, then the thief can can keep using the JWT. An API that accepts JWTs does an independent verification without depending on the JWT source so the API server has no way of knowing if this was a stolen token! This is why JWTs have an expiry value. And these values are kept short.