面向RNS-CKKS方案的同态计算硬件加速器
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关键词：全同态加密；RNS-CKKS算法；硬件加速器；可配置架构；现场可编程门阵列中图分类号：TP309.2 文献标志码：A 文章编号：1001-3695（2026）01-025-0208-08doi：10.19734/j.issn.1001-3695.2025.06.0176
Homomorphic computing hardware accelerator for RNS-CKKS scheme
Chen Xingchen¹，Guo Jiayi1，Chen Dihu²，Su Tao1† （1.SchoolofElodtuUniesitgin;olofteaed， SunYat-sen University，Shenzhen Guangdong5181O7，China）
Abstract：Toaddress thechalengeof thesubstantialdata storage，transmissionoverheadandlowcomputationaleffciencyin fullyhomomorphicencryptionaplications，this work proposedahardwareacceleratorforhomomorphiccomputationbasedon the mainstream RNS-CKKS scheme.Thisaccelerator featuredadivide-and-conquer permutation network for the automorphism operator toachieve eficientdataschedulinganddynamicrouting.Concurrently，byadoptinganon-chipandof-chipcollaborative storage strategyandreconstructing thecomputation flow，the aceleratorreduced theon-chipcaching requirements for hardware-deployedkey-switchingoperationsandefectivelyhidof-chipmemorylatency.Tofurther enhancecomputationalefficiencyandresourceutilization，itconstructedaunifiedproessingaayandanoptimizedon-chipcachearchitecture.Experimental results onFPGA show that compared to the OpenFHE software library，this design achieves speedups of 8.68 to 56.2 times.Furthermore，intheciphertext-ciphertexthomomorphicmultiplicationoperation，theproposeddesignachieves1.18to 1.53times accelerationand1.10to4.98 timesarea eficiencyimprovementsover similar hardwareaccelerationsolutions， whilealsooferingcertainadvantages inconfiguability.Thisworkcontributestothehardware-efficientdeploymentofhomomorphic encryption schemes.
Key words：fullhomomorphicencryption；RNS-CKKSalgorithm；hardware accelerator；configurablearchitecture;FPGA
0 引言
随着信息技术的快速发展，云计算已成为现代社会数字化转型的重要技术支撑。（剩余18865字）
