Terminal apparatus, communication method, and communication...

Details Terminal apparatus, communication method, and communication... Terminal apparatus, communication method, and communication...

2007-05-29

2007-05-29

Peeso, Thomas R. (Department: 2132)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

C713S153000, C713S168000

Reexamination Certificate

active

10623742

ABSTRACT:
A manager or an issuer issues a participation certificate, for an ordinary user who will newly join a group formed on a network made up of specified users, on which the manager or issuer creates a digital signature by the use of a private key of the group. Members belonging to the group authenticate one another as belonging to the same group and as authorized members of the group, on the basis of their respective participation certificates.

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patent: 02/01799 (2002-01-01), None
Harney H and Muckenhirn C, entitled “Group Key Management Protocol(GKMP)Specification”, RFC 2093, IETF Network Working Group, Jul. 1997, pp. 1-23, XP015007877.
Dondeti L.R., et al., entitled “Scalabe Secure One-To-Many Group Communication Using Dual Encryption”, Computer Communications, Elsevier Science Publishers BV, Amsterdam, NL, vol. 23, No. 17, Nov. 1, 2000, pp. 1681-1701, XP004238472.

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