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Fully homomorphic encryption allows the evaluation of arbitrary functions on encrypted data. It can be leveraged to secure outsourced and multiparty computation. TFHE is a fast torus-based fully homomorphic encryption scheme that allows…

Cryptography and Security · Computer Science 2025-12-29 Valentin Reyes Häusler , Gabriel Ott , Aruna Jayasena , Andreas Peter

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) allows arbitrarily complex computations on encrypted data without ever needing to decrypt it, thus enabling us to maintain data privacy on third-party systems. Unfortunately, sustaining deep computations…

Cryptography and Security · Computer Science 2021-12-16 Leo de Castro , Rashmi Agrawal , Rabia Yazicigil , Anantha Chandrakasan , Vinod Vaikuntanathan , Chiraag Juvekar , Ajay Joshi

Fully Homomorphic Encryption (FHE) is one of the most promising technologies for privacy protection as it allows an arbitrary number of function computations over encrypted data. However, the computational cost of these FHE systems limits…

Cryptography and Security · Computer Science 2020-05-06 Toufique Morshed , Md Momin Al Aziz , Noman Mohammed

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

Fully Homomorphic Encryption (FHE) allows computing on encrypted data, enabling secure offloading of computation to untrusted serves. Though it provides ideal security, FHE is expensive when executed in software, 4 to 5 orders of magnitude…

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

Computation on ciphertexts of all known fully homomorphic encryption (FHE) schemes induces some noise, which, if too large, will destroy the plaintext. Therefore, the bootstrapping technique that re-encrypts a ciphertext and reduces the…

Cryptography and Security · Computer Science 2021-09-08 Kamil Kluczniak , Leonard Schild

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

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) 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…

Fully Homomorphic Encryption (FHE) is a set of powerful cryptographic schemes that allows computation to be performed directly on encrypted data with an unlimited depth. Despite FHE's promising in privacy-preserving computing, yet in most…

Cryptography and Security · Computer Science 2025-04-23 Yi Huang , Xinsheng Gong , Xiangyu Kong , Dibei Chen , Jianfeng Zhu , Wenping Zhu , Liangwei Li , Mingyu Gao , Shaojun Wei , Aoyang Zhang , Leibo Liu

Fully Homomorphic Encryption (FHE) is a cryptographic method that guarantees the privacy and security of user data during computation. FHE algorithms can perform unlimited arithmetic computations directly on encrypted data without…

Cryptography and Security · Computer Science 2023-06-21 Charles Gouert , Vinu Joseph , Steven Dalton , Cedric Augonnet , Michael Garland , Nektarios Georgios Tsoutsos

Fully Homomorphic Encryption~(FHE) is a key technology enabling privacy-preserving computing. However, the fundamental challenge of FHE is its inefficiency, due primarily to the underlying polynomial computations with high computation…

Cryptography and Security · Computer Science 2025-02-04 Junxue Zhang , Xiaodian Cheng , Liu Yang , Jinbin Hu , Ximeng Liu , Kai Chen

Fully homomorphic encryption (FHE) has experienced significant development and continuous breakthroughs in theory, enabling its widespread application in various fields, like outsourcing computation and secure multi-party computing, in…

Cryptography and Security · Computer Science 2023-03-21 Yanwei Gong , Xiaolin Chang , Jelena Mišić , Vojislav B. Mišić , Jianhua Wang , Haoran Zhu

This paper presents TT-TFHE, a deep neural network Fully Homomorphic Encryption (FHE) framework that effectively scales Torus FHE (TFHE) usage to tabular and image datasets using a recent family of convolutional neural networks called…

Cryptography and Security · Computer Science 2025-07-09 Adrien Benamira , Tristan Guérand , Thomas Peyrin , Sayandeep Saha

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) 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…

As the demand for privacy-preserving computation continues to grow, fully homomorphic encryption (FHE)-which enables continuous computation on encrypted data-has become a critical solution. However, its adoption is hindered by significant…

Hardware Architecture · Computer Science 2025-06-11 Sungwoong Yune , Hyojeong Lee , Adiwena Putra , Hyunjun Cho , Cuong Duong Manh , Jaeho Jeon , Joo-Young Kim

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
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