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Category Archives: .NET Security
Identity vs Permissions
We often see people misusing IdentityServer as an authorization/permission management system. This is troublesome – here’s why. IdentityServer (hence the name) is really good at providing a stable identity for your users across all applications in your system. And with … Continue reading
Posted in .NET Security, IdentityServer, OAuth, OpenID Connect, WebAPI
53 Comments
Optimizing Identity Tokens for size
Generally speaking, you want to keep your (identity) tokens small. They often need to be transferred via length constrained transport mechanisms – especially the browser URL which might have limitations (e.g. 2 KB in IE). You also need to somehow store the … Continue reading
Posted in .NET Security, IdentityServer, OpenID Connect, WebAPI
5 Comments
New in IdentityServer4: Resource-based Configuration
For RC4 we decided to re-design our configuration object model for resources (formerly known as scopes). I know, I know – we are not supposed to make fundamental breaking changes once reaching the RC status – but hey – we … Continue reading
Posted in .NET Security, ASP.NET, OAuth, Uncategorized, WebAPI
44 Comments
IdentityServer4 RC2 released
Yesterday we pushed IdentityServer4 RC2 to nuget. There are no big new features this time, but a lot of cleaning up, bug fixing and adding more tests. We might add one or two more bigger things before RTM – but … Continue reading
Posted in .NET Security, ASP.NET, IdentityModel, IdentityServer, OAuth, OpenID Connect, WebAPI
2 Comments
IdentityModel v2 released
IdentityModel is our protocol client library for various OpenID Connect and OAuth 2 endpoints like discovery, userinfo, token, introspection and token revocation. In addition it has some general purpose helpers like generating random numbers, base64 URL encoding, time-constant string comparison … Continue reading
Posted in .NET Security, IdentityModel, OAuth, OpenID Connect, WebAPI
1 Comment
New in IdentityServer4: Default Scopes
Another small thing people have been asking for. The scope parameter is optional in OAuth 2 – but we made the decision that clients always have to explicitly ask for the scopes they want to access. We relaxed this requirement … Continue reading
Posted in .NET Security, ASP.NET, IdentityServer, OAuth, OpenID Connect, WebAPI
5 Comments
Identity & Access Control for ASP.NET Core Deep Dive
Once a year Brock and I do our three day version of the Identity & Access Control workshop in London. This year it will be all about .NET Core and ASP.NET Core – and a full day on the new IdentityModel2 & … Continue reading
Posted in .NET Security, ASP.NET, IdentityModel, IdentityServer, OAuth, OpenID Connect, WebAPI
3 Comments
IdentityServer4 RC1
Wow – we’re done! Brock and I spent the last two weeks 14h/day refactoring, polishing, testing and refining IdentityServer for ASP.NET Core…and I must say it’s the best STS we’ve written so far… We kept the same approach as before, … Continue reading
Posted in .NET Security, ASP.NET, IdentityServer, OAuth, OpenID Connect, WebAPI
19 Comments
Why does my Authorize Attribute not work?
Sad title, isn’t it? The alternative would have been “The complicated relationship between claim types, ClaimsPrincipal, the JWT security token handler and the Authorize attribute role checks” – but that wasn’t very catchy. But the reality is, that many people are struggling … Continue reading
Posted in .NET Security, OAuth, OpenID Connect, WebAPI
11 Comments
Identity Videos, Podcasts and Slides from Conference Season 2016/1
My plan was to cut down on conferences and travelling in general – this didn’t work out ;) I did more conferences in the first 6 months of 2016 than I did in total last year. weird. Here are some … Continue reading
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