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http://opencast.jira.com/browse/MH-8316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=31031#comment-31031
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David Horwitz commented on MH-8316:
-----------------------------------
By default the LTI launcher doesn't particularly tryst that the suplied
credentials match institutional roles and users. Remember the LTI consumer
could be a student project or a system on another campus.
So it namespaces the supplied id as follows:
LTI:[consumer name]:[users internal id on consumer system]
It will ask the user directory service if it knows of this user - if not found
it creates an on the fly user with that id. Trusting a key allows one to use
the supplied human readable id (twunden rather than a guid) and that will be
trusted to match a know user.
> LTI should support Trusted source on a per Tenant Basis
> -------------------------------------------------------
>
> Key: MH-8316
> URL: http://opencast.jira.com/browse/MH-8316
> Project: Matterhorn Project
> Issue Type: Community Feature Request
> Components: Architecture & Services
> Affects Versions: 1.3
> Reporter: David Horwitz
> Assignee: David Horwitz
> Fix For: 1.5
>
>
> The current LTI implementation assumes that the LTI supplied user is likely
> not related to a user Matterhorn knows about. Some use cases require that a
> tighter integration is required - that some producers could trust some
> consumers to be passing authoritative user information that can be trusted to
> be canonical and enriched by other Matterhorn held data.
> Note that one tenant wishing to trust a consumer in this way should not force
> other tenants on the same host to trust them
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