Accession Number : AD1041455


Title :   Initial Approaches for Discovery of Undocumented Functionality in FPGAs


Descriptive Note : Conference Paper


Corporate Author : Information Sciences Institute Arlington United States


Personal Author(s) : French,Matthew ; Schmidt,Andrew ; Dasu,Aravind


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1041455.pdf


Report Date : 01 Mar 2017


Pagination or Media Count : 4


Abstract : Due to a variety of commercial pressures such as IP protection, support cost, and time to market, modern COTS devices contain many functions that are not exposed to the end user. This creates a risk in government systems that undocumented hardware functions could become a security vulnerability. Traditional approaches require imaging a device and reverse engineering its functionality, a time consuming process which requires access to costly capital equipment. In this feasibility study, we present an approach tailored for FPGAs which leverages run-time active probing to greatly reduce the cost and time to discover undocumented functionality. We conduct an analysis on the Xilinx Virtex-5 DSP48E unit for which we identify the functionality for 1,136 undocumented modes.


Descriptors :   circuit analysis , algorithms , computer programming , logic , integrated circuits , extraction , circuit testers


Subject Categories : Electrical and Electronic Equipment
      Computer Hardware


Distribution Statement : APPROVED FOR PUBLIC RELEASE