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Homomorphic Encryption (HE) is one of the most promising post-quantum cryptographic schemes that enable privacy-preserving computation on servers. However, noise accumulates as we perform operations on HE-encrypted data, restricting the…

Cryptography and Security · Computer Science 2022-11-01 Jongmin Kim , Gwangho Lee , Sangpyo Kim , Gina Sohn , John Kim , Minsoo Rhu , Jung Ho Ahn

Fully Homomorphic Encryption (FHE) is a relatively recent advancement in the field of privacy-preserving technologies. FHE allows for the arbitrary depth computation of both addition and multiplication, and thus the application of…

Machine Learning · Computer Science 2021-07-29 George Onoufriou , Paul Mayfield , Georgios Leontidis

Fully Homomorphic Encryption (FHE) emerges one of the most promising solutions to privacy-preserving computing in an untrusted cloud. FHE can be implemented by various schemes, each of which has distinctive advantages, i.e., some are good…

Cryptography and Security · Computer Science 2022-03-03 Lei Jiang , Lei Ju

Fully Homomorphic Encryption (FHE) is rapidly emerging as a promising foundation for privacy-preserving cloud services, enabling computation directly on encrypted data. As FHE implementations mature and begin moving toward practical…

Cryptography and Security · Computer Science 2026-03-25 Jianan Mu , Ge Yu , Zhaoxuan Kan , Song Bian , Liang Kong , Zizhen Liu , Cheng Liu , Jing Ye , Huawei Li

Fully Homomorphic Encryption (FHE) enables computations directly on encrypted data, but its high computational cost remains a significant barrier. Writing efficient FHE code is a complex task requiring cryptographic expertise, and finding…

Cryptography and Security · Computer Science 2026-01-28 Bilel Sefsaf , Abderraouf Dandani , Abdessamed Seddiki , Arab Mohammed , Eduardo Chielle , Michail Maniatakos , Riyadh Baghdadi

Privacy-preserving machine learning has become an important long-term pursuit in this era of artificial intelligence (AI). Fully Homomorphic Encryption (FHE) is a uniquely promising solution, offering provable privacy and security…

Cryptography and Security · Computer Science 2026-03-30 Cory Brynds , Parker McLeod , Lauren Caccamise , Asmita Pal , Dewan Saiham , Sazadur Rahman , Joshua San Miguel , Di Wu

Traditional approaches to vector similarity search over encrypted data rely on fully homomorphic encryption (FHE) to enable computation without decryption. However, the substantial computational overhead of FHE makes it impractical for…

Cryptography and Security · Computer Science 2025-02-21 Dongfang Zhao

Performing smart computations in a context of cloud computing and big data is highly appreciated today. Fully homomorphic encryption (FHE) is a smart category of encryption schemes that allows working with the data in its encrypted form. It…

Cryptography and Security · Computer Science 2018-04-20 Ahmed El-Yahyaoui , Mohamed Dafir Ech-Chrif El Kettani

Homomorphic Encryption (HE) is a set of powerful properties of certain cryptosystems that allow for privacy-preserving operation over the encrypted text. Still, HE is not widespread due to limitations in terms of efficiency and usability.…

Cryptography and Security · Computer Science 2023-02-20 José Cabrero-Holgueras , Sergio Pastrana

Homomorphic encryption (HE) enables computations on encrypted data by concealing information under noise for security. However, the process of bootstrapping, which resets the noise level in the ciphertext, is computationally expensive and…

Cryptography and Security · Computer Science 2023-05-22 Adiwena Putra , Prasetiyo , Yi Chen , John Kim , Joo-Young Kim

Fully Homomorphic Encryption (FHE) enables computations on encrypted data, preserving confidentiality without the need for decryption. However, FHE is often hindered by significant performance overhead, particularly for high-precision and…

Cryptography and Security · Computer Science 2024-09-06 Chao Wang , Shubing Yang , Xiaoyan Sun , Jun Dai , Dongfang Zhao

Fully Homomorphic Encryption (FHE) is a technique that allows arbitrary computations to be performed on encrypted data without the need for decryption, making it ideal for securing many emerging applications. However, FHE computation is…

Quantum fully homomorphic encryption (QFHE) allows to evaluate quantum circuits on encrypted data. We present a novel QFHE scheme, which extends Pauli one-time pad encryption by relying on the quaternion representation of SU(2). With the…

Quantum Physics · Physics 2022-12-07 Guangsheng Ma , Hongbo Li

In today's data-driven world, recommendation systems personalize user experiences across industries but rely on sensitive data, raising privacy concerns. Fully homomorphic encryption (FHE) can secure these systems, but a significant…

Cryptography and Security · Computer Science 2025-09-04 Moontaha Nishat Chowdhury , André Bauer , Minxuan Zhou

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…

Cryptography and Security · Computer Science 2024-05-21 Mengxin Zheng , Cheng Chu , Qian Lou , Nathan Youngblood , Mo Li , Sajjad Moazeni , Lei Jiang

Fully Homomorphic Encryption (FHE) enables computation directly on encrypted data but incurs massive computational and memory overheads, often exceeding plaintext execution by several orders of magnitude. While custom ASIC accelerators can…

Homomorphic encryption (HE) is a privacy-preserving computation technique that enables computation on encrypted data. Today, the potential of HE remains largely unrealized as it is impractically slow, preventing it from being used in real…

Cryptography and Security · Computer Science 2024-05-14 Negar Neda , Austin Ebel , Benedict Reynwar , Brandon Reagen

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

Homomorphic encryption (HE)---the ability to perform computation on encrypted data---is an attractive remedy to increasing concerns about data privacy in deep learning (DL). However, building DL models that operate on ciphertext is…

Cryptography and Security · Computer Science 2019-04-03 Fabian Boemer , Yixing Lao , Rosario Cammarota , Casimir Wierzynski

Combating money laundering has become increasingly complex with the rise of cybercrime and digitalization of financial transactions. Graph-based machine learning techniques have emerged as promising tools for Anti-Money Laundering (AML)…

Cryptography and Security · Computer Science 2024-11-12 Fabrianne Effendi , Anupam Chattopadhyay