Patent · US Active

Method and system for encrypting data

US9787469B2 · kind B2 · utility

1Cited by

2References

15Claims

0Family size

Assignee

NEC CORPORATION · JP

Inventors

Ghassan Karame · Heidelberg, DE
Claudio Soriente · Madrid, ES
Srdjan Capkun · Zürich, CH

Key dates

Filing date	Apr 24, 2014
Grant date	Oct 10, 2017
Priority date	—
Expiry date	Apr 24, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/0637
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for encrypting data based on all-or-nothing encryption. Data to be encrypted and an encryption key are provided. The data is divided into an odd number of blocks, wherein each of the odd number of blocks has the same size. The blocks are encrypted with the encryption key to obtain an intermediate ciphertext that includes the encrypted blocks. The intermediate ciphertext is linearly transformed based on additive contravalence operations to obtain a final ciphertext.

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