Monthly Archives: September 2008

A Good Orthopedist in San Francisco

Posted on September 18, 2008 by Jeff Fitzsimons

I needed to see someone about my shoulder/neck injury. On the recommendation of a coworker, I went to see Dr. Jon Dickinson. He seems to be very nice, knowledgeable, and happily explains what he’s observing, rather than just writing a … Continue reading →

Posted in Injury | Tagged , , , , , , | 1 Comment

Color Test

Posted on September 16, 2008 by Jeff Fitzsimons

I just took a fun test to determine how good I am at discriminating colors. Lower values are better. My results: Your score: 8 Gender: Male Age range: 30-39 Best score for your gender and age range: 0 Highest score … Continue reading →

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Stripping an Authenticode Signature

Posted on September 12, 2008 by Jeff Fitzsimons

We needed to modify the resources of an installer and then apply an Authenticode signature. Unfortunately, it already had a signature on it, and modifying the resources of an executable with a signature results in a corrupted signature. The Microsoft … Continue reading →

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Using Certificates and Signtool

Posted on September 12, 2008 by Jeff Fitzsimons

Obtain a Software Publisher Certificate Your Certificate Authority will supply one of the following: a Personal Information Exchange (.pfx) file a Software Publisher Certificate (.spc), and a Private Key (.pvk) file a CER-encoded X.509 Certificate (.cer), and a Private Key … Continue reading →

Posted in Cryptography, Technology | 1 Comment

PE Format

Posted on September 12, 2008 by Jeff Fitzsimons

While investigating Authenticode, I become curious about the Portable Executable format. This is the file format used by all Windows executables. Here is a good overview in the context of .Net. And here is the referenced image which is missing … Continue reading →

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mssign32.dll

Posted on September 11, 2008 by Jeff Fitzsimons

With CAPICOM deprecated, MSDN suggests using the mssign32.dll functions. There are two fundamental problems with this: No example code whatsoever is provided. No header file is provided. Well, at least I can do something about #2. Here is a minimal … Continue reading →

Posted in Authenticode, Cryptography, Technology | Leave a comment