Results 31 to 40 of about 390 (116)

Analysis on Matrix GSW‐FHE and Optimizing Bootstrapping

Security and Communication Networks, Volume 2018, Issue 1, 2018., 2018
With the rapid development of multimedia technologies, the multimedia data storage and outsource computation are delegated to the untrusted cloud, which has led to a series of challenging security and privacy threats. Fully homomorphic encryption can be used to protect the privacy of cloud data and solve the trust problem of third party. In this paper,
Xiufeng Zhao, Hefeng Mao, Shuai Liu, Weitao Song, Bo Zhang, Zhaoqing Pan   +5 more
wiley   +1 more source

Faster amortized bootstrapping using the incomplete NTT for free

Transactions on Cryptographic Hardware and Embedded Systems
Amortized bootstrapping techniques have been proposed for FHEW/TFHE to efficiently refresh multiple ciphertexts simultaneously within a polynomial modulus.
Thales B. Paiva, Gabrielle De Micheli, Syed Mahbub Hafiz, Marcos A. Simplicio Jr., Bahattin Yildiz   +4 more
doaj   +1 more source

A Fast Heuristic for Mapping Boolean Circuits to Functional Bootstrapping

Transactions on Cryptographic Hardware and Embedded Systems
Functional bootstrapping in FHE schemes such as FHEW and TFHE allows the evaluation of arbitrary functions on encrypted data, while simultaneously reducing noise.
Sergiu Carpov
doaj   +1 more source

Homomorphic Field Trace Revisited : Breaking the Cubic Noise Barrier

Transactions on Cryptographic Hardware and Embedded Systems
We present a novel homomorphic trace evaluation algorithm RevHomTrace, which mitigates the phase amplification problem that comes with the definition of the field trace.
Kang Hoon Lee, Ji Won Yoon
doaj   +1 more source

A Practical Full Key Recovery Attack on TFHE and FHEW by Inducing Decryption Errors [PDF]

, 2023
Fully Homomorphic Encryption (FHE) promises to secure our data on the untrusted cloud, while allowing arbitrary computations. Recent research has shown two side channel attacks on the client side running a popular HE library.
Ayantika Chatterjee, Bhuvnesh Chaturvedi, Debdeep Mukhopadhyay, Anirban Chakraborty   +3 more
core   +1 more source

Multikey Fully Homomorphic Encryption: Removing Noise Flooding in Distributed Decryption via the Smudging Lemma on Discrete Gaussian Distribution

IET Information Security, Volume 2025, Issue 1, 2025.
The current multikey fully homomorphic encryption (MKFHE) needs to add exponential noise in the distributed decryption phase to ensure the simulatability of partial decryption. Such a large noise causes the ciphertext modulus of the scheme to increase exponentially compared to the single‐key fully homomorphic encryption (FHE), further reducing the ...
Xiaokang Dai, Wenyuan Wu, Yong Feng, Xueqin Liang   +3 more
wiley   +1 more source

Sharing the Mask: TFHE Bootstrapping on Packed Messages

Transactions on Cryptographic Hardware and Embedded Systems
Fully Homomorphic Encryption (FHE) schemes typically experience significant data expansion during encryption, leading to increased computational costs and memory demands during homomorphic evaluations compared to their plaintext counterparts.
Loris Bergerat, Charlotte Bonte, Benjamin R. Curtis, Jean-Baptiste Orfila, Pascal Paillier, Samuel Tap   +5 more
doaj   +1 more source

FHEW

, 2017
FHEW is open-source software distributed under the terms of the GNU General Public License. See the file LICENSE for complete details on the licensing of FHEW. The FHEW library is based on the Fully Homorphic Encryption scheme described in the paper "FHE
Ducas, L. (Léo)
core   +1 more source

A survey of optimization techniques for bootstrapping algorithms in FHE

Cybersecurity
Fully Homomorphic Encryption (FHE) enables arbitrary computation on encrypted data without decryption, making it a cornerstone of privacy-preserving outsourcing, such as cloud computing.
Tianyu Li, Zhiwei Wang, Lutan Zhao, Ruida Wang, Qingyun Niu, Xianhui Lu, Dan Meng, Rui Hou   +7 more
doaj   +1 more source

Efficient and Compact Full-Domain Functional Bootstrapping via Subring Folding

Transactions on Cryptographic Hardware and Embedded Systems
Functional bootstrapping has emerged as a powerful tool in fully homomorphic encryption (FHE), integrating noise reduction and function evaluation. FHEW/TFHE-based functional bootstrapping has demonstrated high efficiency in evaluating arbitrary non ...
Han Xia, Mingsheng Wang
doaj   +1 more source