Patent · US Active

Key generation and PACE protocol with protection against side channel attacks spying out a nonce

US12316734B2 · kind B2 · utility

0Cited by

4References

20Claims

0Family size

Assignee

GIESECKE+DEVRIENT EPAYMENTS GMBH · DE

Inventors

Markus Bockes · Munich, DE
Ludger Hemme · Munich, DE
Lars Hoffmann · Birkenfeld, DE

Key dates

Filing date	Feb 3, 2021
Grant date	May 27, 2025
Priority date	—
Expiry date	Nov 26, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/046
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for key generation is arranged in a client processor device, by means of which a second public client key Pc′ of the client is generated. The public key Pc′ is formed by a calculation, or sequence of calculations, which does not contain any operation whose result depends exclusively on the nonce s and at least one public value, or the public key Pc′ being formed by a calculation, or sequence of calculations, where into each operation in which the nonce s enters, at least one non-public value enters the first private client key kc or the second private client key kc′, for example as a result of the calculation Pc′=(kc′·s)•G+(kc′·kc)•Pt.

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