Category Archives: OpenID
Recent OpenID relying party vulnerabilities
The OSIS I5 OpenID interop testing is well underway. Last weekend while testing some OpenID relying party web sites, John Bradley happened upon a web site that failed a particularly alarming test. Further investigation revealed that the security ho… Continue reading
DotNetOpenAuth 3.0 released
Download it now. Previously named DotNetOpenId in its v1.x and 2.x releases, the v3.0 release is rechristened DotNetOpenAuth to reflect its support for multiple authentication and authorization protocols. Sporting OpenID, OAuth and InfoCard support … Continue reading
How to pretty much guarantee that you might get an email address with OpenID
OpenID itself is just an authentication protocol. It takes OpenID extensions to get more information about the user like their name or email address. In fact there are two popular extensions that can provide this kind of information: Simple Registr… Continue reading
DotNetOpenAuth 3.0 Beta 2 released
DotNetOpenAuth, previously named DotNetOpenId, is getting nearer to its major 3.0 release. With beta 2, we have a security reviewed, feature complete library for .NET use of the OAuth and OpenID protocols. Although Beta 1 was very rough and was… Continue reading
Replay protection for OpenID 1.x relying parties
If you’re writing an OpenID Provider, you should have a strong appreciation for the security of your customers’ identities that you will be protecting. One aspect of that protection is against replay attacks, where a man-in-the-middle sniffs the … Continue reading
OpenID association poisoning
As part of the OpenID protocol a relying party often establishes shared secrets (called ‘associations’) with identity providers that are used to verify identity assertions. It occurred to me that an OpenID relying party might easily introduce a m… Continue reading
Fixing the OpenID login user experience
The user experience of OpenID at Relying Party web sites is so important to get right. OpenID is right for your web site’s visitors – no doubt in my mind about that. But we need to make sure it’s very easy for your visitors to use so you don’t … Continue reading
OpenID on Classic ASP
Several people have asked for an OpenID library for Classic ASP. Yes, it’s several years deprecated, but there are still some major and smaller sites using it. Classic ASP allows the consumption of COM/ActiveX objects, so it turns out DotNetOpenId … Continue reading
