Patent · US Active

Key protecting method and apparatus

US10313111B2 · kind B2 · utility

0Cited by

0References

14Claims

0Family size

Assignee

DATA ASSURANCE AND COMMUNICATIONS SECURITY RESEARCH CENTER, CHINESE ACADEMY OF SCIENCES · CN

Inventors

Jingqiang Lin · Beijing, CN
Le Guan · Beijing, CN
Qiongxiao Wang · Beijing, CN
Jing Wang · Waterloo, CA
Jiwu Jing · Beijing, CN

Key dates

Filing date	Aug 27, 2014
Grant date	Jun 4, 2019
Priority date	—
Expiry date	Oct 10, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG06F2212/621
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

An embodiment of the present disclosure provide a key protection method, via setting that each core of the multi-core process may have one symmetric master key, dynamically obtaining the plaintext private key of the asymmetric algorithm via a decryption operation and using the Intel TSX, it may be ensured that the private key and the intermediate variables used in the computation process may be stored in the cache occupied by the operation core only in terms of the hardware level, which may prevent the attackers from stealing the private key from the physical memory and ensure the security of the implementation of the public-key cryptographic algorithm in the computer system.

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