#OAuth2

2 Followers · 111 Posts

Articles and Questions regarding OAuth2 Authentication.

Question Scott Roth · Dec 29, 2025

I built a BP, that every time that a message is received from a BS, it executes 

 set isAuth=##class(%SYS.OAuth2.AccessToken).IsAuthorized("EpicFHIRPOC",,,.accessToken,.idtoken,.responseProperties,.error)
 if 'isAuth {
        set tSC=##class(%SYS.OAuth2.Authorization).GetAccessTokenClient("EpicFHIRPOC", "*",, .error)        
         set isAuth=##class(%SYS.OAuth2.AccessToken).IsAuthorized("EpicFHIRPOC",,,.accessToken,.idtoken,.responseProperties,.error)
    }

To save time, I was thinking of just creating a BS that goes out and gets the Authorization Token every hour.

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Question Dmitrii Baranov · Dec 9, 2025

I need to connect IRIS to a third-party FHIR server which in turn is connected to Keycloak.

For machine-to-machine communications, client credentials grants should be used. I don't know why exactly but the FHIR server requires access tokens to contain the "openid" scope, otherwise it returns 401 (unauthorized).

If the access token returned by Keycloak contains that scope, IRIS complains about ""ERROR #8859: Unsupported response to access token request: OpenID Connect is not supported for password and client credentials grant type". The error is produced by the OAuth2.

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Question Colin Nagle · Oct 24, 2024

I have an API set up in IRIS which is secured using an IRIS authentication service, so there is a bearer token being passed down in the request header.

I've already set  Parameter HandleCorsRequest = 1; on the spec class and All the endpoints I am have (a mix of GET, POST, PATCH and DELETE) are working from postman without issue, the problem is when consuming from the web front-end and the preflight checks the browser instigates. Most of the endpoints work in the browser, but some are triggering the preflight (OPTIONS) check causing the CORS issue.

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Question TAZ.R · Jul 16, 2025

Hello Community,

I’m working on an InterSystems IRIS production that needs to call an external API using OAuth client credentials (client_id and client_secret). For security reasons, I must pass these credentials via environment variables in my Docker container.

In the IRIS terminal, I can successfully retrieve these environment variables using $System.Util.GetEnviron("api-clientid") and $System.Util.GetEnviron("api-clientsecret"). However, inside my Business Operation class (OnMessage method), these environment variables return empty strings.

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Question Jan K · Feb 10, 2025

We are trying to create a JWT in order to get oauth2 token from login.microsoftonline.com and then use that token to get key/secret from an Azure Key Vault.

It seemed like it would be quite straightforward by using the Create method of class  %Net.JSON.JWT

But already trying to set the first header parameter alg PS256 as specified by https://learn.microsoft.com/en-us/entra/identity-platform/certificate-c… becomes a problem.

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Question Fabrizio Campari · Dec 24, 2024

Hi!   

I'm trying to set up a Clinical Viewer demo env with HealthShare 2024.2. 
I've done the standard installation following the doc : 

Everything works until I get to the point where I have to enable federated SSO (UCR demo - Federated SSO). Once it is activated, I can no longer access the instance through the portal, and the browser displays the following error:

Checking the messages.log, I see that every time I try to enable federated SSO and access the portal, I encounter the following error:

12/24/24-10:51:55:639 (98515) 2 [Utility.

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Question Oliver Wilms · Dec 15, 2024

I am trying to work with Epic on FHIR. Epic's documentation stated, your application makes a HTTP POST request to the authorization server's OAuth 2.0 token endpoint to obtain access token.

Set tSC = ##class(%SYS.OAuth2.Authorization).GetAccessTokenClient(pClient,pScopes,.prop,.err) returns

ERROR #9761: No key in provided JWKS for alg ES512 and kid

I check this /csp/sys/oauth2/OAuth2.JWTServer.cls?

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Question Gayle Congdon · Dec 5, 2024

I have created an OAuth Client and have created the credentials etc successfully.

I have tested using the curl command and have received the token back from the Server using the terminal.

I now need to create an Operation to use my client credentials to connect to the Server and receive the token back.

What adapter would I use as I am unable to link my client credentials and secret  - currently  I am using the EnsLib.HTTP.OutboundAdapter
 but I am not sure if this is the correct.

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Question Dmitrii Baranov · Nov 27, 2024

I want to integrate IRIS with Keycloak OAuth2 provider to use delegated authentication everywhere and to secure everything - sys*/Portal applications, REST services, FHIR server and so on. If an unathenticated user tries to access any IRIS URL - he or she should be redirected to Keycloak. After the user has successfully authenticated, i would like to access his requistes (username, email, roles, scopes) extracted from the JWT token, programmatically. What should be done to achieve that?

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Question Oliver Wilms · Nov 22, 2024

I finally figured out how to get JWT token using set x = ##class(%SYS.OAuth2.Authorization).GetAccessTokenClient("medbank","openid fhirUser",.prop,.err).

I also found iris-fhir-client app on Open Exchange. I registered Epic sandbox server, but I cannot list resources. I suspect I need to integrate authorization / authentication. How do I do this with irisfhirclient py?

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Question Olivier Caudron · Jul 23, 2024

Hi

I'm trying to use JWT authentication on a REST application in IRIS. The login API are correctly "injected" into the application. Login works fine with Postman and other REST clients, and subsequent calls to my REST API using the bearer token work fine (correctly authenticated). So far, so good.

The problem is that it doesn't work with Axios, so I can only test it, I cannot integrate it into my application.

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Question Theo Stolker · Sep 20, 2024

I am trying to use IRIS for Health as a Facade for an external FHIR Server, where IRIS provides the proper authentication. The client authenticates using a bearer token obtained from the IRIS OAuth2 server via a jwt client assertion. The IRIS endpoint, however, returns a 401 as soon as I remove the Unauthenticated access

Is there w way to make this work through configuration?

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Question Bradley Collins · Aug 18, 2024

Dear All,

I am currently part of a team that is developing an application using Microsoft PowerApps as the front end and IRIS as the backend.  Effectively that frontend screens, which are house and an Azure serve, call a series of REST interfaces exposed by IRIS from a physical Microsoft server.  During the development stage we have not had any security in place but now we need to secure the application using a single sign on.  PowerApps relies on Microsoft Entra for its security both LDAP and OAuth.  Has anyone in the community connected IRIS to Microsoft Entra?

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Question Scott Roth · May 7, 2024

Question for folks who have connected to an External FHIR repository outside of IRIS. Within the HS.FHIRServer.Interop.HTTPOperation there is not an option to include TLS or an OAuth authentication when connecting to an external Repository. So then how is that piece done if you need to Authenticate against an OAuth Server before you are able to access the data or call the Web Services/REST calls?

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Question Michael Davidovich · Mar 21, 2024

Hello,

I have my server setup a resource server.  When a user calls our API they submit a bearer token as authorization and in our dispatch class AccessCheck() we validate the JWT using ##class(%SYS.OAuth2.Validation).ValidateJWT()

If I include a scope to check in that method I get the error Scope check may only be done on requesting client and I'm not sure what this means. The method works without include the scope and will let me know if I have an unsigned token or an expired token.  

I noticed that the implementation of the method calls Set token=##class(OAuth2.AccessToken).

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Question Anup Thakkar · Nov 29, 2023

Hello,

I have created a service in Node.js which interacts with IRIS using APIs. The current implementation uses basic auth. I want to implement OAuth 2, to make the communication between the node.js service and IRIS secure. I want my service to act as client and IRIS as Authorization and Resource server. I don't know how to do that. Anyone who has implemented OAuth using IRIS can you help me out or point me in the right direction on about how to implement it? 

Thank you for your help :)

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Question Scott Roth · Nov 17, 2023

I am attempting to setup my first OAuth2 client, as we are adventuring into the realm of making FHIR API calls to our EMR from HealthShare Health Connect. 

I have gone through and set up the Issuer Endpoint, and Client Configuration but now I want to test it and verify that the setup is correct. When I setup the Client Configuration, it would not allow me to use Discovery as it was saying I needed a "Client secret" but was not given one. So I set it up manually, thinking I hit all the information correctly.

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Question Scott Roth · Dec 1, 2023

Trying to setup my first OAuth 2 client to authenticate against Epic's Interconnect instance that is hosting FHIR/Web Service API's. Epic's documentation says the JWT request has to be sent as a POST request..

Does 

GetAuthorizationCodeEndpoint

and 

GetImplicitEndpoint

automatically put the request into a POST request, or do I need to format a %Net.HttpRequest to POST?

Thanks

Scott

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Question Michael Davidovich · Jun 2, 2023

This is a bit of an IRIS question but also and OAuth 2.0 questions:

I am using %OAuth2.JWT.JWTToObject() to "validate" a JWT.  My questions:

- While I am checking claims with the returned body, does the return status of the method "count" as a validation step? In other words, if I weren't checking claims and $$$OK was returned from that method call (passing in the token and public keys), I could feel confident that this token came from the expected auth server?

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Question John McBride · May 2, 2023

Hello All, 

I'm trying to sign some custom JWT with x.509 certs but running into a problem with the signed JWT containing some information I need in the JOSE header.

Is there a way to get the "X5C:[]" header included in the signed JTW? IS this as easy as setting something like the following

Set JOSE("x5c") = "public key"

Thanks

John

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Question Mary George · Sep 28, 2022

Hi, 

I am trying to configure OAuth2 server to connect to Cerner Auth server to get FHIR API access token but I am getting the error "Discovery response not valid".

I can get the access token back okay from Cerner endpoint used in the OAuth configuration below via Postman and Manually sending the request via HTTP Operation from HealthShare, so the URLs I am using looks correct but the OAuth configuration is not working.   

Not sure if this is issue from Cerner side or HealthShare side. I tried enabling debugging but nothing useful.  

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