Disposable configuration of remotely reconfigurable systems

International audienceReconfigurable architectures are being increasingly widely used thanks to their high flexibility. This flexibilityis due to their inherent ability to reconfigure (whether dynamically or not) functional blocks. Manyconfigurations can be used and changed while the application is running in the reconfigurable system,and/or the same configuration can be used by several systems at different times. The flexibility of reconfigurablesystems is greatly enhanced if they can be reconfigured remotely. But in the case of remotereconfiguration, security is of paramount importance. In this article, the problem of remote configurationis addressed by the concept of disposable configuration, an efficient, secure and reliable mechanism formaintaining the flexibility and security of the system. For the implementation of the secure reconfigurationprotocol, we propose to use the secure-by-design HCrypt cryptoprocessor, providing low cost, highlevel protection against both hardware and software attacks without configuration throughput reduction.We validated the approach on a Xilinx Virtex-6 FPGA but it can be easily mapped to any other FPGA orSoC