I need to remove the password protection from an uploaded excel file. I have been doing this directly with the Excel assemblies (ASP.NET/C#) and then I tried with the [ooxmlcrypto](http://code.google.com/p/ooxmlcrypto/), both worked, but the problem is that I can not deploy either of those solution because of the dependencies.

I mean, my sysadmin does not want us installing Excel on the server and, as I have been searching for some alternatives, I can not find one.

My question is: is there a way to put the necessary dlls in the server without installing Excel or the Office suite?

I found this: [Office 2007 Primary Interop Assemblies redistributable package](http://www.microsoft.com/downloads/details.aspx?FamilyID=59daebaa-bed4-4282-a28c-b864d8bfa513&DisplayLang=en) but still, it requires a Microsoft Office Product.

Any ideas?