OFHE: An Electro-Optical Accelerator for Discretized TFHE
<|reference_start|>OFHE: An Electro-Optical Accelerator for Discretized TFHE: This paper presents \textit{OFHE}, an electro-optical accelerator designed to process Discretized TFHE (DTFHE) operations, which encrypt multi-bit messages and support homomorphic multiplications, lookup table operations and full-domain functional bootstrappings. While DTFHE is more efficient and versatile than other fully homomorphic encryption schemes, it requires 32-, 64-, and 128-bit polynomial multiplications, which can be time-consuming. Existing TFHE accelerators are not easily upgradable to support DTFHE operations due to limited datapaths, a lack of datapath bit-width reconfigurability, and power inefficiencies when processing FFT and inverse FFT (IFFT) kernels. Compared to prior TFHE accelerators, OFHE addresses these challenges by improving the DTFHE operation latency by 8.7\%, the DTFHE operation throughput by $57\%$, and the DTFHE operation throughput per Watt by $94\%$.<|reference_end|>
@article{zheng2024ofhe:,
    title={OFHE: An Electro-Optical Accelerator for Discretized TFHE},
    author={Mengxin Zheng, Cheng Chu, Qian Lou, Nathan Youngblood, Mo Li, Sajjad
  Moazeni, Lei Jiang},
    journal={arXiv preprint arXiv:2405.11607},
    year={2024},
    archivePrefix={arXiv},
    eprint={2405.11607},
    primaryClass={cs.CR cs.AR}
}