Apparatus and method for homomorphic encryption processing, system including the same

CN113609495BActive Publication Date: 2026-07-10SAMSUNG ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SAMSUNG ELECTRONICS CO LTD
Filing Date
2021-04-14
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

然而，根据同态加密技术加密的同态密文的大小可以达到明文大小的几十倍，并且由同态加密技术支持的操作的计算复杂度也可能非常高

Benefits of technology

[0009] According to exemplary embodiments of the present invention, a homomorphic encryption processing apparatus, a system including a homomorphic encryption processing apparatus, and a method for performing homomorphic encryption processing can adaptively generate homomorphic encryption parameters based on ciphertext operation level information determined based on domain information, and can perform homomorphic encryption, homomorphic decryption, and homomorphic operations based on the homomorphic encryption parameters. Therefore, the homomorphic encryption processing apparatus, the system including a homomorphic encryption processing apparatus, and the method for performing homomorphic encryption processing can adaptively perform homomorphic encryption, homomorphic decryption, and homomorphic operations considering domain information.

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Abstract

A homomorphic encryption processing device is provided, which includes a processing circuit configured to generate ciphertext operation level information based on domain information. The domain information represents a technical field to which a homomorphic encryption processing is applied. The ciphertext operation level information represents a maximum number of multiplication operations between homomorphic ciphertexts without a bootstrapping process. The processing circuit is further configured to select and output a homomorphic encryption parameter based on the ciphertext operation level information. The processing circuit is further configured to perform one of homomorphic encryption, homomorphic decryption, and homomorphic operation based on the homomorphic encryption parameter. The homomorphic encryption processing device can adaptively generate the homomorphic encryption parameter according to the ciphertext operation level information determined based on the domain information, and can perform the homomorphic encryption, the homomorphic decryption, and the homomorphic operation based on the homomorphic encryption parameter.
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