发明名称 |
Method and system for secure multiparty cloud computation |
摘要 |
One embodiment of the present invention provides a system for performing secure multiparty cloud computation. During operation, the system receives multiple encrypted datasets from multiple clients. An encrypted dataset associated with a client is encrypted from a corresponding plaintext dataset using a unique, client-specific encryption key. The system re-encrypts the multiple encrypted datasets to a target format, evaluates a function based on the re-encrypted multiple datasets to produce an evaluation outcome, and sends the evaluation outcome to the multiple clients, which are configured to cooperatively decrypt the evaluation outcome to obtain a plaintext evaluation outcome. |
申请公布号 |
US9252942(B2) |
申请公布日期 |
2016.02.02 |
申请号 |
US201213449216 |
申请日期 |
2012.04.17 |
申请人 |
Futurewei Technologies, Inc. |
发明人 |
Zhang Xinwen;Zheng Qingji;Kalker Antontius;Wang Guoqiang |
分类号 |
H04L29/06;H04L9/00 |
主分类号 |
H04L29/06 |
代理机构 |
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代理人 |
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主权项 |
1. A computer-executable method, comprising:
receiving, at a computing system, multiple encrypted datasets from multiple clients, wherein an encrypted dataset associated with a client is encrypted from a corresponding plaintext dataset using a unique, client-specific encryption key, wherein the client-specific encryption key is a public key selected from a public/private key pair; re-encrypting the multiple encrypted datasets to a target format, comprising,
receiving a set of re-encryption keys, wherein a particular re-encryption key corresponding to the client is used to re-encrypt the encrypted dataset associated with the client, wherein the re-encryption key corresponding to the client is generated using a private key selected from the public/private key pair and a target public key published by a trusted third party, wherein the target public key corresponds to a target private key and each client receives a share of the target private key; evaluating a function based on the re-encrypted multiple datasets to produce an evaluation result; and sending the evaluation result to the multiple clients, which are configured to cooperatively decrypt the evaluation result to obtain a plaintext evaluation result using shares of the target private key. |
地址 |
Plano TX US |