how to check if a file has a digital signature

Question

I\'d like to check programatically if a file has been digitally signed or not.

For the moment, I found a rather obscure code in MSDN, that doesn\'t compile...

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Answer 1

Since Powershell 5.1, you can use Get-AuthenticodeSignature to verifiy the signature of a Binary or a PowerShell Script.

> Get-AuthenticodeSignature -FilePath .\MyFile.exe

SignerCertificate                 Status        Path                                                                                   
-----------------                 ------        ----                                                                                   
A59E92E31475F813DDAF41C3CCBC8B78  Valid         MyFile.exe   

Or

> (Get-AuthenticodeSignature -FilePath .\MyFile.exe).Status
Valid