57 lines
2 KiB
Text
Executable file
57 lines
2 KiB
Text
Executable file
== Requesting Authorization Data and Token
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Client applications using the UMA protocol can use a specific endpoint to obtain a special security token called *Requesting Party Token* or *RPT*.
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This token consists of all the permissions granted to an user as a result of the evaluation of the permissions and authorization policies associated with the resource(s) being requested.
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With an RPT in hand, client applications can gain access to protected resources at the resource server.
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```bash
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http://${host}:${port}/auth/realms/${realm_name}/authz/authorize
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```
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When asking for a RPT, you need to provide two things:
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* A link:../protection/permission-api-papi.adoc[Permission Ticket] with the resources you want to access
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* The link:./whatis-obtain-aat.adoc[AAT] (as a bearer token) representing user's identity and his consent to access authorization data on his behalf.
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```bash
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curl -X POST
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-H "Authorization: Bearer ${AAT}" -d '{
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"ticket" : ${PERMISSION_TICKET}
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}' "http://localhost:8080/auth/realms/hello-world-authz/authz/authorize"
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```
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As a result, you will get the following response from the server:
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```json
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{"rpt":"${RPT}"}
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```
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=== Requesting Party Token or RPT
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A RPT is a https://tools.ietf.org/html/rfc7519[JSON Web Token (JWT)] digitally signed using https://www.rfc-editor.org/rfc/rfc7515.txt[JSON Web Signature (JWS)].
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The token is built based on the AAT sent by the client during the authorization process.
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When you decode a RPT you will see something like that:
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```json
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{
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"authorization": {
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"permissions": [
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{
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"resource_set_id": "d2fe9843-6462-4bfc-baba-b5787bb6e0e7",
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"resource_set_name": "Hello World Resource"
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}
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]
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},
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"jti": "d6109a09-78fd-4998-bf89-95730dfd0892-1464906679405",
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"exp": 1464906971,
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"nbf": 0,
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"iat": 1464906671,
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"sub": "f1888f4d-5172-4359-be0c-af338505d86c",
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"typ": "kc_ett",
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"azp": "hello-world-authz-service"
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}
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```
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From this token you can obtain all permissions granted by the server from the *permissions* claim.
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