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COMPUTATION-EFFICIENT SECRET SHUFFLE PROTOCOL FOR ENCRYPTED DATA BASED ON HOMOMORPHIC ENCRYPTION
COMPUTATION-EFFICIENT SECRET SHUFFLE PROTOCOL FOR ENCRYPTED DATA BASED ON HOMOMORPHIC ENCRYPTION
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机译：基于同型加密的加密数据计算有效的秘密扫描协议
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摘要
The present disclosure involves systems, software, and computer implemented methods for a communication-efficient secret shuffle protocol for encrypted data based on homomorphic encryption. A service provider and multiple clients participate in a secret shuffle protocol of randomly shuffling encrypted client-specific secret input values. The protocol includes generation and exchange of random numbers, random permutations and different blinding values. A last protocol step includes using homomorphism, for each client, to perform computations on intermediate encrypted data to homomorphically remove a first blinding value and a second blinding value, to generate a client-specific rerandomized encrypted secret input value. As a result, the client-specific rerandomized encrypted secret input values are generated in an order that is unmapped to an order of receipt, at the service provider, of the encrypted secret input values.
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