确保FPGA SoC配置独立于其制造商

Nisha Jacob, J. Wittmann, Johann Heyszl, Robert Hesselbarth, F. Wilde, Michael Pehl, G. Sigl, K. Fischer
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引用次数: 15

摘要

包括fpga在内的片上系统是关键应用的重要平台,因为它们通过多核cpu提供重要的软件性能,并通过集成fpga提供高通用性。这些集成的FP-GAs允许更新可编程硬件功能,例如,在设备的生命周期内包括新的通信接口或更新加密加速器。对于工业控制设备或使用寿命长的车辆等关键应用,需要更新软件和硬件配置。这些更新必须经过身份验证,可能还需要加密。实现这一目标的一种方法是依赖于FPGA制造商提供的静态加密和相应的主密钥。然而,在本贡献中,我们展示了如何使用替代加密加速器改造Xilinx Zynq fpga,以及如何使用物理不可克隆功能(PUF)技术建立设备独立密钥。这两个关键方面降低了对制造商提供的安全特性的信任,同时通过将配置绑定到特定设备来提高安全性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Securing FPGA SoC configurations independent of their manufacturers
System-on-Chips which include FPGAs are important platforms for critical applications since they provide significant software performance through multi-core CPUs as well as high versatility through integrated FPGAs. Those integrated FP-GAs allow to update the programmable hardware functionality, e.g. to include new communication interfaces or to update cryptographic accelerators during the life-time of devices. Updating software as well as hardware configuration is required for critical applications such as e.g. industrial control devices or vehicles with long life-times. Such updates must be authenticated and possibly encrypted. One way to achieve this is to rely on static FPGA manufacturer-provided cryptography and respective master keys. However, in this contribution, we show how to retrofit Xilinx Zynq FPGAs with an alternative cryptographic accelerator and how to establish device-individual keys using Physical Unclonable Function (PUF) technology. These two key aspects reduce the required trust in manufacturer-provided security features while increasing the security by binding configurations to a specific device.
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