Patent · US Active

Fully homomorphic cryptography with improved data item representation

US11991266B2 · kind B2 · utility

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23Claims
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Assignee

Inventor

  • Marc Joye · Saint-Maximin-la-Sainte-Baume, FR

Key dates

Filing dateOct 28, 2021
Grant dateMay 21, 2024
Priority date—
Expiry dateOct 28, 2041

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04L9/3093
  • WIPO fieldDigital communication
  • WIPO sectorElectrical engineering

Abstract

Some embodiments are directed to a fully homomorphic encryption (FHE) cryptography, wherein some encrypted data items are clipped, thereby reducing a bit-size of the encrypted data item and increasing an associated noise level of the encrypted data item. An FHE operation or a decrypt operation that operates on the clipped encrypted data item as input, has noise tolerance above a noise level associated with the clipped encrypted data item.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.