Verifying the server signature in Kerberos Privilege Account Certificate

This blog post focuses on understanding how a server signature is verified in a Kerberos Privilege Account Certificate (PAC). A PAC contains two signatures: a server signature and a KDC signature. In a previous blog, I introduced PAC validation, whereby the server requests the KDC to verify the PAC. In this blog, I will talk…


Details of three TIFF Tag extensions that Microsoft Office Document Imaging (MODI) software may write into the TIFF files it generates

Microsoft Office Document Imaging (MODI) software includes specific tags/constants in the documents it generates, of which some are enumerated here.  In addition to these enumerated tags there are some undocumented TIFF tag extensions that MODI may write into TIFF documents. The following information details three of these TIFF tags (37679, 37681, 37680), and you can…


Reflecting on another successful Interoperability Lab event

Engagement with partners is an integral part of achieving interoperability with Windows. In addition to helping users of the Microsoft Open Protocol Specifications, our team participates in a regular basis in interoperability labs dedicated to specific areas of focus of our partners. Sun Microsystems is one our team’s most active partners. Recently, I had the…