Physikalische Sicherheit durch dynamische Hardware-Rekonfiguration

Quelle: DFKI GmbH, Foto: Lisa Jungmann
Quelle: DFKI GmbH, Foto: Lisa Jungmann

Field Programmable Gate Arrays (FPGAs) represent an efficient platform for cryptographic hardware implementations. However, in order to be hardened against any physical attacks, each security-critical circuit implemented on an FPGA must be protected against (a) side channel analysis, (b) fault injection attacks, and (c) reverse engineering. Accordingly, this project aims to develop techniques that are able to utilize the dynamic reconfiguration capabilities of FPGAs for effective protection mechanisms against the above mentioned class of attacks. The overall project will solve the fundamental problem of cryptographic hardware implementations, namely that these implementations exist only as static circuits and can therefore easily be analyzed.
In particularly, this subproject focuses on the research and development of countermeasures against fault injection attacks and reverse engineering under laboratory conditions.

In SecRec, three renowned research institutes and universities, one medium-size company with excellent credentials and one worldwide leading technology corporation are working together in order to jointly develop innovative approaches for hardware security implementations. These approaches utilizing dynamic reconfiguration in order to protected security implementations against a variety of physical attack classes. In particularly, this subproject focuses on two classes of reconfiguration techniques in order to prevent fault inject attacks and reverse engineering. Local reconfiguration replaces configuration of special FPGA elements, whereas partial dynamic reconfiguration enables a replacement of complete sub circuits at run time. The development of such resistant circuits includes a threat analysis, research and development of countermeasures, as well as the evaluation and demonstration of the gained protection.