Resource Owner Password Credentials Grant¶
The resource owner password credentials grant type is suitable in cases where the resource owner has a trust relationship with the client (e.g., a service’s own mobile client) and in situations where the client can obtain the resource owner’s credentials.
Instead of redirecting the user to the authorization server, the client itself will ask the user for the resource owner's username and password. The client will then send these credentials to the authorization server along with the client’s own credentials.
The diagram below illustrates the resource owner password credentials grant flow.
The cURL commands below can be used to try this grant type.
curl -v -X POST -H "Authorization: Basic <base64 encoded client id:client secret value>" -k -d "grant_type=password&username=<username>&password=<password>" -H "Content-Type:application/x-www-form-urlencoded" https://localhost:9443/oauth2/token
curl -u <client id>:<client secret> -k -d "grant_type=password&username=<username>&password=<password>" -H "Content-Type:application/x-www-form-urlencoded" https://localhost:9443/oauth2/token
You will receive a response similar to the format below.
Support for refresh token grant - Yes
This grant type issues a refresh token which can be used to obtain new access tokens using the refresh token grant.
See the Try Password Grant topic to try out a sample of the resource owner password credentials grant with WSO2 Identity Server and WSO2 OAuth2 Playground.