End-to-end secure operations using a query vector
US12309127B2 · kind B2 · utility
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Key dates
| Filing date | Jan 19, 2018 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Mar 17, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for an end-to-end secure operation using query vector Q_V having size s. Exemplary methods include: extracting a set of term components {T} of the operation using a term generation function; setting Q_V, j=E(B_j) when H(T)=j for j=0, . . . , (s−1), E(B_j) being a non-zero bitmask corresponding to element T from the set of term components {T} encrypted using a homomorphic encryption scheme E; and setting Q_V, j=E(0) when H(T)≠j for j=0, . . . , (s−1), E(0) being a zero bitmask encrypted using the homomorphic encryption scheme E.
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