-
Recent Posts
Categories
- .NET Security (95)
- ASP.NET (163)
- ASP.NET Core (27)
- AuthorizationServer (33)
- Azure (29)
- Conferences & Training (40)
- IdentityModel (347)
- IdentityServer (205)
- Katana (46)
- OAuth (163)
- OpenID Connect (94)
- OWIN (45)
- Photography (14)
- PolicyServer (3)
- Resources (1)
- Uncategorized (626)
- WCF (109)
- WebAPI (223)
Tweets
Tweets by leastprivilegeFeed
Archives
- October 2024
- May 2021
- October 2020
- July 2020
- June 2020
- May 2020
- April 2020
- March 2020
- February 2020
- January 2020
- September 2019
- August 2019
- July 2019
- June 2019
- April 2019
- February 2019
- January 2019
- December 2018
- July 2018
- June 2018
- May 2018
- February 2018
- January 2018
- December 2017
- November 2017
- October 2017
- August 2017
- July 2017
- May 2017
- April 2017
- March 2017
- February 2017
- January 2017
- December 2016
- October 2016
- September 2016
- August 2016
- July 2016
- June 2016
- May 2016
- February 2016
- January 2016
- December 2015
- November 2015
- October 2015
- September 2015
- July 2015
- June 2015
- May 2015
- April 2015
- March 2015
- February 2015
- January 2015
- December 2014
- November 2014
- October 2014
- September 2014
- August 2014
- July 2014
- June 2014
- May 2014
- April 2014
- March 2014
- February 2014
- January 2014
- December 2013
- November 2013
- October 2013
- September 2013
- August 2013
- July 2013
- June 2013
- May 2013
- April 2013
- March 2013
- February 2013
- January 2013
- December 2012
- November 2012
- October 2012
- September 2012
- August 2012
- July 2012
- June 2012
- May 2012
- April 2012
- March 2012
- February 2012
- January 2012
- December 2011
- November 2011
- October 2011
- September 2011
- July 2011
- June 2011
- May 2011
- April 2011
- March 2011
- February 2011
- January 2011
- December 2010
- November 2010
- October 2010
- September 2010
- August 2010
- July 2010
- June 2010
- May 2010
- April 2010
- March 2010
- February 2010
- December 2009
- November 2009
- October 2009
- September 2009
- August 2009
- July 2009
- June 2009
- May 2009
- April 2009
- March 2009
- February 2009
- January 2009
- December 2008
- November 2008
- October 2008
- September 2008
- August 2008
- July 2008
- June 2008
- May 2008
- April 2008
- March 2008
- February 2008
- January 2008
- December 2007
- November 2007
- October 2007
- September 2007
- August 2007
- July 2007
- June 2007
- May 2007
- April 2007
- March 2007
- February 2007
- January 2007
- December 2006
- November 2006
- October 2006
- September 2006
- August 2006
- July 2006
- June 2006
- May 2006
- April 2006
- March 2006
- February 2006
- January 2006
- December 2005
- November 2005
- October 2005
- September 2005
- August 2005
- July 2005
- June 2005
- May 2005
- April 2005
- March 2005
- February 2005
- January 2005
- December 2004
- November 2004
- October 2004
- September 2004
- August 2004
- July 2004
- June 2004
- May 2004
Category Archives: WebAPI
Advanced OAuth2: Assertion Flow (why)
The core OAuth2 spec defines so called flows, which are basically descriptions of the interactions between a client, a user and an authorization server to request access tokens. Another implied fact is, that the resource server and the authorization server … Continue reading
Posted in ASP.NET, AuthorizationServer, OAuth, WebAPI
1 Comment
Dissecting the Web API Individual Accounts Template–Part 3: External Accounts
Part 1 covered the basic template security setup. Part 2 focused on the features around local accounts and username/password authentication. This part will deal with third party authentication using Google and friends as well as associating a third party account … Continue reading
Dissecting the Web API Individual Accounts Template–Part 2: Local Accounts
In the last post I gave an overview of the security setup of the Individual Accounts template. I recommend reading that first. Also Brock has some great background content – here and here. Disclaimer: I would have designed the API … Continue reading
Dissecting the Web API Individual Accounts Template–Part 1: Overview
The Web API v2 Individual Accounts template shows off some quite popular application scenarios, e.g. username/password authentication with local accounts (including create account, change/set password) as well as third party authentication using Facebook, Google etc – including linking those external … Continue reading
Thinktecture.IdentityModel.Client v1.0
As part of the restructuring work of IdentityModel, I separated the HTTP and OAuth2 client bits into a separate project. The nice side effect of this is that the client library is now portable and can be used in .NET … Continue reading
Posted in IdentityModel, OAuth, WebAPI
7 Comments
Adding Refresh Tokens to a Web API v2 Authorization Server
In the last post I showed how to add a simple username/password (aka resource owner password credentials flow) authorization server to Web API v2. This has several advantages: The client does not need to hold on to the user credentials … Continue reading
Posted in AuthorizationServer, IdentityModel, Katana, OAuth, OWIN, WebAPI
38 Comments
Authorization Servers are good for you (and your Web APIs)
An authorization server is a very important architectural component when it comes to Web API security – think of it as a traffic cop between clients, users and resources. The OAuth2 spec defines it as follows: “The server issuing access … Continue reading
Posted in AuthorizationServer, Katana, OAuth, OWIN, WebAPI
10 Comments
Client Certificate Authentication Middleware for Katana
Katana has no middleware to turn SSL client certificates into a ClaimsIdentity. And since I am currently collecting material for my upcoming Web API security course I used the opportunity to experiment with Katana authentication middleware. There’s a certain pattern … Continue reading
Posted in IdentityModel, Katana, OWIN, WebAPI
5 Comments
Thinktecture AuthorizationServer v1.0
Six months ago we released the first preview version of AS to the public. Since then happened quite a bit. We went feature complete for v1, did some bug fixing and used AS in a number of customer projects. We … Continue reading
Posted in AuthorizationServer, OAuth, WebAPI
2 Comments
Thinktecture AuthenticationHandler for Web API v2
Here I mentioned that there are some incompatibilities between AuthenticationHandler and Web API v2/OWIN hosting. As part of making Thinktecture.IdentityModel more modular – I updated the AuthenticationHandler code and did some cleanup. You can find the source code here and … Continue reading
Posted in IdentityModel, Katana, OWIN, WebAPI
2 Comments
leastprivilege.com 