Key conversion method, system and device for homomorphic cryptographic operation and readable storage medium

Key conversion method, system and device for homomorphic cryptographic operation and readable storage medium

The invention relates to the technical field of homomorphic encryption, in particular to a key conversion method for homomorphic cryptographic operation, and the method comprises the following steps:processing ciphertext data input from the outside, converting the ciphertext data into extended key p...

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Hauptverfasser: YANG CHEN, REN SONGNAN, GENG LI, WU MINSHUN, SU YANG
Format: Patent
Sprache:chi ; eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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creator YANG CHEN
REN SONGNAN
GENG LI
WU MINSHUN
SU YANG
description The invention relates to the technical field of homomorphic encryption, in particular to a key conversion method for homomorphic cryptographic operation, and the method comprises the following steps:processing ciphertext data input from the outside, converting the ciphertext data into extended key parameters, and caching the data input from the outside; performing polynomial operation on the extended key parameter and the cache data, and finally performing modular operation to obtain a dimension-reduced ciphertext. The invention further discloses a key conversion system for homomorphic cryptographic operation. The key conversion system comprises a conversion key generation module and a key conversion module. The invention also discloses computer equipment and a computer readable storage medium. When a computer program is executed by the processor, the steps of the key conversion method for homomorphic cryptographic operation are realized. The problems that an original fully homomorphic encryption scheme desig
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
title Key conversion method, system and device for homomorphic cryptographic operation and readable storage medium
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