/// <summary>
/// Verifies the Authenticode signature in a file.
/// </summary>
/// <param name="pathToFile">The file to verify.</param>
/// <returns>True if the file contains a valid Authenticode certificate.</returns>
public static bool VerifyAuthenticode(string pathToFile)
{
IntPtr unionPointer = IntPtr.Zero;
try
{
NativeMethods.WINTRUST_FILE_INFO fileinfo = new NativeMethods.WINTRUST_FILE_INFO();
fileinfo.cbStruct = (uint)Marshal.SizeOf(typeof(NativeMethods.WINTRUST_FILE_INFO));
fileinfo.pcwszFilePath = pathToFile;
NativeMethods.WINTRUST_DATA data = new NativeMethods.WINTRUST_DATA();
data.cbStruct = (uint)Marshal.SizeOf(typeof(NativeMethods.WINTRUST_DATA));
data.dwUIChoice = NativeMethods.WINTRUST_DATA.UIChoices.WTD_UI_NONE;
data.fdwRevocationChecks = NativeMethods.WINTRUST_DATA.RevocationChecks.WTD_REVOKE_NONE;
data.dwUnionChoice = NativeMethods.WINTRUST_DATA.UnionChoices.WTD_CHOICE_FILE;
unionPointer = data.pUnion = Marshal.AllocHGlobal((int)fileinfo.cbStruct);
Marshal.StructureToPtr(fileinfo, data.pUnion, false);
Guid guid = NativeMethods.WINTRUST_ACTION_GENERIC_VERIFY_V2;
return(NativeMethods.WinVerifyTrust(IntPtr.Zero, ref guid, ref data) == 0);
}
finally
{
if (unionPointer != IntPtr.Zero)
{
Marshal.FreeHGlobal(unionPointer);
}
}
}
public static bool VerifyAuthenticode(string pathToFile)
{
IntPtr unionPointer = IntPtr.Zero;
try
{
NativeMethods.WINTRUST_FILE_INFO fileinfo = new NativeMethods.WINTRUST_FILE_INFO();
fileinfo.cbStruct = (uint)Marshal.SizeOf(typeof(NativeMethods.WINTRUST_FILE_INFO));
fileinfo.pcwszFilePath = pathToFile;
NativeMethods.WINTRUST_DATA data = new NativeMethods.WINTRUST_DATA();
data.cbStruct = (uint)Marshal.SizeOf(typeof(NativeMethods.WINTRUST_DATA));
data.dwUIChoice = NativeMethods.WINTRUST_DATA.UIChoices.WTD_UI_NONE;
data.fdwRevocationChecks = NativeMethods.WINTRUST_DATA.RevocationChecks.WTD_REVOKE_NONE;
data.dwUnionChoice = NativeMethods.WINTRUST_DATA.UnionChoices.WTD_CHOICE_FILE;
unionPointer = data.pUnion = Marshal.AllocHGlobal((int)fileinfo.cbStruct);
Marshal.StructureToPtr(fileinfo, data.pUnion, false);
Guid guid = NativeMethods.WINTRUST_ACTION_GENERIC_VERIFY_V2;
return NativeMethods.WinVerifyTrust(IntPtr.Zero, ref guid, ref data) == 0;
}
finally
{
if (unionPointer != IntPtr.Zero)
Marshal.FreeHGlobal(unionPointer);
}
}
