Method and system for multi-authority controlled functional encryption
US11451369B2 · kind B2 · utility
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3References
13Claims
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Key dates
| Filing date | Sep 25, 2019 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Mar 19, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/46
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a system having a plurality of servers, a method is executed to perform an encryption scheme. The method includes a server of the plurality of servers receiving a request token to compute a function on a data point, the data point being encrypted as a ciphertext and the request token being based on the ciphertext and the function. The server grants the request to compute the function on the datapoint by sending a function evaluation key, and participates in a distributed decryption protocol for determining a result of computing the function on the data point by sending a master secret key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.