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Validate whether a codesigning is valid

Posted on 2010-11-20
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Last Modified: 2012-05-10
Hi,

is it possible to check whether a digital sign is valid? After Signing a file, it has a checksum. After a file is changed the checksum is not valid anymore and windows said that the sign is broken. How to get this information by a code?

Ocrana
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Question by:Ocrana
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Expert Comment

by:warhero
ID: 34182917
hai there,

personally i don't have much depth knowledge over verification on CRC's however i found a site which i think it would helpful to you

http://codeguru.earthweb.com/cpp/w-p/files/shellapifunctions/article.php/c13027/
(check - verifying CRC/checksum)

hope this helps
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trinitrotoluene earned 500 total points
ID: 34183206
yes it is possible to do this. Take a look at

http://msdn.microsoft.com/en-us/library/aa388208(VS.85).aspx

let me know if u have more queries
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Expert Comment

by:Subrat (C++ windows/Linux)
ID: 34186807
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Author Closing Comment

by:Ocrana
ID: 34396812
Thanks.
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