Ruby Requires Chilkat v11.7.0+

Remove the Authenticode Signature from an MSI, PowerShell, or VBScript File

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Demonstrates how to remove the Authenticode signature from a Windows Installer package (.msi), a PowerShell file (.ps1, .psm1, .psd1), or a VBScript file (.vbs). Removing the signature from these file types requires Chilkat v11.7.0 or later. Ruby

require 'chilkat'

success = false

#  This example requires the Chilkat API to have been previously unlocked.
#  See Global Unlock Sample for sample code.

#  Starting in Chilkat v11.7.0, RemoveSignature can remove the Authenticode signature from
#    - Windows Installer packages (.msi)
#    - PowerShell scripts, modules, and data files (.ps1, .psm1, .psd1)
#    - VBScript files (.vbs)
#  in addition to EXE and DLL files.

#  This example removes the signature from a signed PowerShell script.
#  To remove the signature from an .msi or a .vbs, pass the path of that file instead.
path = "C:/someDir/Deploy.ps1"

codeSign = Chilkat::CkCodeSign.new()

#  The file is modified in place.  Keep a copy if the signed file is still needed.
#  
#  For a PowerShell or VBScript file, the signature comment block is removed from the end of the file.
#  For an MSI, the digital signature stream and the extended signature stream (MsiDigitalSignatureEx)
#  are removed from the package.
success = codeSign.RemoveSignature(path)
if (success == false)
    print codeSign.lastErrorText() + "\n";
    exit
end

print "The signature was removed." + "\n";

#  The file is now unsigned, so VerifySignature returns false.
sigInfo = Chilkat::CkJsonObject.new()
valid = codeSign.VerifySignature(path,sigInfo)
print "has a valid signature: " + valid.to_s() + "\n";