Patent · US Active

Lightweight mitigation against first-order probing side-channel attacks on block ciphers

US10673616B2 · kind B2 · utility

1Cited by

4References

22Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Rosario Cammarota · San Diego, US
Indranil BANERJEE · San Diego, US
Matthew McGregor · Talbert, US

Key dates

Filing date	Jan 11, 2017
Grant date	Jun 2, 2020
Priority date	—
Expiry date	Mar 15, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/0618
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Techniques for mitigating side-channel attacks on cryptographic algorithms are provided. An example method according to these techniques includes applying a block cipher algorithm to an input data to generate a cryptographic output, such that applying the block cipher to input data comprises modifying an output of a stage of the block cipher algorithm such that each output of the stage of the block cipher algorithm has a constant Hamming weight, and outputting the cryptographic output.

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