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In this paper we show how fully homomorphic encryption (FHE) can be accelerated using a systolic architecture. We begin by analyzing FHE algorithms and then develop systolic or systolic-esque units for each major kernel. Connecting units is…

Cryptography and Security · Computer Science 2024-08-20 Austin Ebel , Brandon Reagen

Fully Homomorphic Encryption (FHE) promises the ability to compute over encrypted data without revealing sensitive contents. However, enabling high-frequency updates and statistical analysis in outsourced databases remains elusive due to…

Cryptography and Security · Computer Science 2026-04-28 Dongfang Zhao

In recent years, Fully Homomorphic Encryption (FHE) has undergone several breakthroughs and advancements, leading to a leap in performance. Today, performance is no longer a major barrier to adoption. Instead, it is the complexity of…

Cryptography and Security · Computer Science 2023-03-07 Alexander Viand , Patrick Jattke , Miro Haller , Anwar Hithnawi

It has been a long standing problem to securely outsource computation tasks to an untrusted party with integrity and confidentiality guarantees. While fully homomorphic encryption (FHE) is a promising technique that allows computations…

Cryptography and Security · Computer Science 2019-05-21 Wenhao Wang , Yichen Jiang , Qintao Shen , Weihao Huang , Hao Chen , Shuang Wang , XiaoFeng Wang , Haixu Tang , Kai Chen , Kristin Lauter , Dongdai Lin

FHE offers protection to private data on third-party cloud servers by allowing computations on the data in encrypted form. However, to support general-purpose encrypted computations, all existing FHE schemes require an expensive operation…

Cryptography and Security · Computer Science 2022-07-26 Rashmi Agrawal , Leo de Castro , Guowei Yang , Chiraag Juvekar , Rabia Yazicigil , Anantha Chandrakasan , Vinod Vaikuntanathan , Ajay Joshi

The field of edge computing has witnessed remarkable growth owing to the increasing demand for real-time processing of data in applications. However, challenges persist due to limitations in performance and power consumption. To overcome…

Hardware Architecture · Computer Science 2024-03-11 Simone Machetti , Pasquale Davide Schiavone , Thomas Christoph Müller , Miguel Peón-Quirós , David Atienza

In the era of cloud computing, privacy-preserving computation offloading is crucial for safeguarding sensitive data. Fully Homomorphic Encryption (FHE) enables secure processing of encrypted data, but the inherent computational complexity…

Hardware Architecture · Computer Science 2025-09-17 Jiaao Ma , Ceyu Xu , Lisa Wu Wills

Fully Homomorphic Encryption (FHE) represents a paradigm shift in cryptography, enabling computation directly on encrypted data and unlocking privacy-critical computation. Despite being increasingly deployed in real platforms, the…

Cryptography and Security · Computer Science 2025-09-26 Rian Adam Rajagede , Yan Solihin

Fully homomorphic encryption (FHE) protects data privacy in cloud computing by enabling computations to directly occur on ciphertexts. To improve the time-consuming FHE operations, we present an electro-optical (EO) FHE accelerator,…

Cryptography and Security · Computer Science 2023-01-30 Mengxin Zheng , Qian Lou , Fan Chen , Lei Jiang , Yongxin Zhu

The widespread adoption of cloud-based solutions introduces privacy and security concerns. Techniques such as homomorphic encryption (HE) mitigate this problem by allowing computation over encrypted data without the need for decryption.…

Cryptography and Security · Computer Science 2024-12-13 Mpoki Mwaisela , Joel Hari , Peterson Yuhala , Jämes Ménétrey , Pascal Felber , Valerio Schiavoni

Word-wise Fully Homomorphic Encryption (FHE) schemes, such as CKKS, are gaining significant traction due to their ability to provide post-quantum-resistant, privacy-preserving approximate computing; an especially desirable feature in…

Fully Homomorphic Encryption over the Torus (TFHE) allows arbitrary computations to happen directly on ciphertexts using homomorphic logic gates. However, each TFHE gate on state-of-the-art hardware platforms such as GPUs and FPGAs is…

Cryptography and Security · Computer Science 2022-02-18 Lei Jiang , Qian Lou , Nrushad Joshi

Homomorphic encryption (HE) enables computation on encrypted data, and hence it has a great potential in privacy-preserving outsourcing of computations to the cloud. Hardware acceleration of HE is crucial as software implementations are…

Cryptography and Security · Computer Science 2022-10-13 Ahmet Can Mert , Aikata , Sunmin Kwon , Youngsam Shin , Donghoon Yoo , Yongwoo Lee , Sujoy Sinha Roy

Machine learning (ML) systems that guarantee security and privacy often rely on Fully Homomorphic Encryption (FHE) as a cornerstone technique, enabling computations on encrypted data without exposing sensitive information. However, a…

Cryptography and Security · Computer Science 2024-12-20 Dongfang Zhao

Vision Transformers (ViTs) have established new performance benchmarks in vision tasks such as image recognition and object detection. However, these advancements come with significant demands for memory and computational resources,…

Hardware Architecture · Computer Science 2026-02-10 Cong Wang , Zexin Fu , Jiayi Huang , Shanshi Huang

Homomorphic encryption (HE) enables the secure offloading of computations to the cloud by providing computation on encrypted data (ciphertexts). HE is based on noisy encryption schemes in which noise accumulates as more computations are…

Cryptography and Security · Computer Science 2022-05-02 Sangpyo Kim , Jongmin Kim , Michael Jaemin Kim , Wonkyung Jung , Minsoo Rhu , John Kim , Jung Ho Ahn

Fully homomorphic encryption (FHE) is a technique that enables statistical processing and machine learning while protecting data, including sensitive information collected by single board computers (SBCs), on a cloud server. Among FHE…

Cryptography and Security · Computer Science 2025-04-29 Marin Matsumoto , Ai Nozaki , Hideki Takase , Masato Oguchi

Federated Learning (FL) is susceptible to privacy attacks, such as data reconstruction attacks, in which a semi-honest server or a malicious client infers information about other clients' datasets from their model updates or gradients. To…

Cryptography and Security · Computer Science 2025-05-22 Abdullah Al Omar , Xin Yang , Euijin Choo , Omid Ardakanian

As artificial intelligence systems become increasingly powerful, they pose growing risks to international security, creating urgent coordination challenges that current governance approaches struggle to address without compromising…

Cryptography and Security · Computer Science 2025-06-19 James Petrie , Onni Aarne , Nora Ammann , David Dalrymple

Fully Homomorphic Encryption is a technique that allows computation on encrypted data. It has the potential to change privacy considerations in the cloud, but computational and memory overheads are preventing its adoption. TFHE is a…

Cryptography and Security · Computer Science 2023-10-19 Michiel Van Beirendonck , Jan-Pieter D'Anvers , Furkan Turan , Ingrid Verbauwhede