Identify Inventor files through magic numbers TXT/HEX in file content just like it is possible for AutoCAD files.
Maybe an logic creation of chars where the file is started with?
Problem is that when a file is attached in mail, the file must scanned and it can only though TXT/HEX content and not through an CAD application.
For AutoCAD files:
- Another method is to open the drawing using notepad or Microsoft Word. The first six (6) characters will give you a code. (picture in attachment 1)
- This code is then cross-referenced to an AutoCAD version/release and will only indicate which AutoCAD version last modified the file.
- AC1027: AutoCAD version 2013, 2014, 2015
- AC1024: AutoCAD version 2010, 2011, 2012
- AC1021: AutoCAD version 2007, 2008, 2009
- AC1018: AutoCAD version 2004, 2005, 2006
- AC1015: AutoCAD version 2000, 2000i, 2002
- AC1014: AutoCAD Release 14
- AC1013: AutoCAD Release 13
- AC1009: AutoCAD Release 11, 12
- AC1006: AutoCAD Release 10
- AC1004: AutoCAD Release 9
Source link: https://synergiscadblog.com/2014/12/04/what-version-of-inventor-or-autocad-created-this-file-and-can...
See also Autodesk Case nr: 16197962
