Patent · US Active

Method for authenticating a portable data carrier

US8966275B2 · kind B2 · utility

0Cited by

6References

16Claims

0Family size

Assignee

GIESECKE & DEVRIENT GMBH · DE

Inventors

Jan Eichholz · Munich, DE
Gisela Meister · Munich, DE

Key dates

Filing date	Mar 7, 2011
Grant date	Feb 24, 2015
Priority date	—
Expiry date	Jul 23, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG06F2221/2103
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for authenticating a portable data carrier (10) to a terminal device by the following steps: In the data carrier (10) a public session key (PKSession) is derived (S5) from a public key individual to the data carrier (PKi) which has in its turn been derived (TS32; S1) from a public group key (PK). Further, a secret session key (SKSession) is derived (S4) from a secret key individual to the data carrier (SKi) which has in turn been derived (TS31) from a secret group key (SK). Subsequently, a secret communication key (KK) is agreed on (S7) between the data carrier (10) and the terminal device. Finally, the terminal verifies (S8) the public session key (PKSession) of the data carrier (10).

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