"User Token – JWT Client Facet" Profile

 Description This Facet defines the ability to use JSON Web Tokens (JWT) as user identification during Session setup. JWTs are used to request an access token from an external Authorization Service.
 URI http://opcfoundation.org/UA-Profile/Security/UserToken/Client/JsonWebToken

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Security
Include  Name Opt.  Description  From Profile
Security User JWT IssuedToken Client A Client uses a JSON Web Token (JWT) for user identity. Part 6 describes OAuth2 and JWTs in more detail.
The token will be encrypted if required by the security policy of the User Token Policy or by the security policy of the endpoint. An unencrypted token either requires message encryption or means outside the scope of OPC UA to secure the identity token so that it cannot be retrieved by sniffing the communication. One option would be a secure transport like a VPN.
 
Security User JWT Token Policy Client The Client understands and uses the Authorization Service definition inside the JWT UserTokenPolicy returned with GetEndpoints.
It shall support at least one of the following Authority Profile ConformanceUnits. The URIs defined in the ConformanceUnit are in the authorityProfileURI field of the JWT Token Policy exposed in Server Endpoints.
 
OAuth2 Authority Profile This unit indicates support of OAuth2 over HTTPS to request access tokens.
The URI for the interactions with this authority is "http://opcfoundation.org/UA/Authorization#OAuth2"
 
OPC UA Authority Profile This unit indicates support of the OPC UA Methods defined in UA Part 12 to request access tokens.
The URI for the interactions with this authority is "http://opcfoundation.org/UA/Authorization#OPCUA"
 
Azure Identity Provider Authority Profile This unit indicates support of the Azure identity provider to request access tokens.
The URI for the interactions with this authority is "http://opcfoundation.org/UA/Authorization#Azure"