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November 2009 - Posts

Wednesday, November 18, 2009 8:41 AM

Using SecAnnotate to Analyze Your Assemblies for Transparency Violations – An Example

SecAnnotate (available in the final .NET 4 SDK, and in beta form here ) can be used to analyze your assemblies, especially APTCA assemblies in order to find transparency violations without needing code coverage from a test case. Instead, the static analysis
Posted by shawnfa | 0 Comments
Attachment(s): TransparencyAnnotations.xml
Wednesday, November 18, 2009 8:24 AM

SecAnnotate Beta

One of the design goals of the security transparency system in the CLR is that it should be as static as possible and not rely on dynamic state (such as the call stack) to function. A fallout of this is that we can write tools to analyze assemblies and
Posted by shawnfa | 0 Comments
Attachment(s): SecAnnotate.msi
Thursday, November 12, 2009 12:59 PM

Differences Between the Security Rule Sets

In my last post I talked about the two different security rule sets supported by the v4 CLR .  At a high level, level 1 is the v2.0 security transparency model, and level 2 encompasses the updated v4 security transparency model.  Digging down
Posted by shawnfa | 0 Comments
Wednesday, November 11, 2009 11:24 AM

Transparency Models: A Tale of Two Levels

Earlier this week, we looked at how the v4 CLR continued the evolution of the security transparency model that started in v2 and started evolving with Silverlight in order to make it the primary security enforcement mechanism of the .NET 4 runtime. The
Posted by shawnfa | 0 Comments
Monday, November 09, 2009 12:23 PM

Transparency as Enforcement in CLR v4

Now that we know the basics of security transparency , let's look at how it evolved over time. In .NET v2.0, many of the transparency rules we previously looked at were in place , with the exception of some of the inheritance rules that were introduced
Posted by shawnfa | 0 Comments
Thursday, November 05, 2009 9:59 AM

Bridging the Gap Between Transparent and Critical Code

Last time we looked at the set of operations that can only be performed by security critical code . One interesting observation is that just because you are doing one of these operations does not mean that your method in and of itself is security sensitive.
Posted by shawnfa | 0 Comments
Tuesday, November 03, 2009 9:38 AM

Transparency 101: Basic Transparency Rules

One of the biggest changes in the .NET 4 security model is a move toward security transparency as a primary security enforcement mechanism of the platform. As you'll recall, we introduced security transparency in the v2 release of .NET as more of an audit
Posted by shawnfa | 0 Comments
 
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