This paper demonstrates a hardware encryption algorithm that can be integrated directly with sensors on the same chip. In contrast to using power-hungry microprocessors and software implementations, the encryption algorithm was based on a Lorenz chaotic system and was implemented as time scaling chaotic shift keying (TS-CSK). The coupled differential equations of TS-CSK were implemented using low power integrators, multiplexers, switches, and passive components. Both a single-ended and differential system was developed. The single-ended based system showed no oscillation, while the differential based system demonstrated oscillation. Experimental measurements of the differential system with an integrated temperature sensor demonstrated the ability to encrypt and decrypt the transmitted signal. The differential encryption/decryption system was implemented in 180 nm technology and operated with a 1.8 V power supply and 1.5 mW of power.

中文翻译：

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适合与传感器片上集成的加密架构

本文演示了一种硬件加密算法，可以直接与同一芯片上的传感器集成。与使用耗电的微处理器和软件实现相比，加密算法基于洛伦兹混沌系统，并作为时间缩放混沌移位键控 (TS-CSK) 实现。TS-CSK 的耦合微分方程是使用低功率积分器、多路复用器、开关和无源元件实现的。开发了单端和差分系统。基于单端的系统没有表现出振荡，而基于差分的系统表现出振荡。带有集成温度传感器的差分系统的实验测量证明了加密和解密传输信号的能力。