An Actively Detuned Wireless Power Receiver with Public Key Cryptographic Authentication and Dynamic Power Allocation

📋 论文概要

该论文提出了一种用于无线功率接收器的主动失谐方案，集成了公钥密码认证和动态功率分配功能。通过优化椭圆曲线标量乘法，采用Frobenius自同态、微编码和SIPO有限域乘法器，实现了11,471门电路的低功耗设计，在0.475V电压下完成一次标量乘法仅需0.77μJ能量。

💡 主要创新点

• 利用Frobenius自同态替代传统的点加倍运算，显著降低计算复杂度。
• 采用高效的微编码和串行输入并行输出有限域乘法器，仅需额外2个寄存器即可完成标量乘法，优化了面积和功耗。
• 基于Keccak-f[200]的伪随机数生成器确保认证挑战的新鲜性，支持动态功率分配。

🏷 关键词

📄 原文摘要

they replace Point-Doubling with an essentially free Frobenius Endomorphism [7]. Efficient micro-coding and a Serial Input Parallel Output (SIPO) finite field multiplier ensure that only 2 additional registers (t, z) are needed in addition to the input (x, y) and output (x1, y1) registers. This together with multiplexer optimization results in an 11,471-gate design. An authentication latency of 200ms allows the ECSM to operate down to 0.475V (1 MHz) when consuming 0.77μJ per scalar multiplication. Additionally, a Keccak-f[200] based PRNG ensures freshness of the ECSM challenges for each round of authentication. 2 There has been a rapid growth in the number of devices with resonant wireless recharging capability [1-3]. Protecting these devices from harsh transients

👥 作者与机构

Nachiket V. Desai1, Chiraag Juvekar1, Shubham Chandak2, Anantha P. Chandrakasan1

Massachusetts Institute of Technology, Cambridge, MA Stanford University, Stanford, CA 1 normal basis field representation are chosen for energy efficiency since