February, 2006

  • .NET Security Blog

    Enveloped PKCS #7 Signatures

    One of the new cryptography features in the v2.0 framework is the ability to work with PKCS #7 formatted messages . The PKCS features live in the new System.Security.Cryptography.Pkcs namespace in System.Security.dll, and are thin wrappers around the...
  • .NET Security Blog

    SN v2.0 Works With PFX Files

    One enhancement to the v2.0 SN tool that may not get noticed right away is that it now has the ability to work with PKCS #12 PFX files in addition to SNK files. The logic here is that a self signed certificate stored in a PFX file is the moral equivalent...
  • .NET Security Blog

    Which Package are the Security Tools In?

    When installing the v2.0 .NET redist package, you'll find that the .Net Configuration MMC snap-in is missing . As of v2.0, we've moved this tool to the SDK package, which you can download here: [x86] [ x64 ] [ IA64 ]. The split of security tools between...
  • .NET Security Blog

    What Happens If Security Policy Files Are Missing?

    We've previously discussed where the security policy files are located on your disk . Depending on how you install the CLR, you may find that the actual security .config files are missing -- what does the CLR do if it can't find them? Even if there...
  • .NET Security Blog

    Deny and PermitOnly Are Not For Sandboxing

    Deny and PermitOnly cannot be used to create an effective sandbox because like Assert , they function as stack walk modifiers -- meaning they modify the current call stack and not the grant set of an assembly. We talked about this previously in Assert...
  • .NET Security Blog

    APTCA and Custom Attributes

    Haibo just posted an excellent article about what happens when you use reflection to get a custom attribute across trust boundaries . The specific situation he talks about is when you have: A fully trusted assembly defining a custom attribute ...
  • .NET Security Blog

    The best part about today ...

    ... the availability of peanut butter cups 6 2/3 times bigger than normal . The best part about tomorrow? They'll probably be available for less than a dollar at Safeway. I can feel the waistline growing already :-)
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