Public key encryption for groups

Details Public key encryption for groups Public key encryption for groups

2004-12-22

2010-12-28

Vu, Kimyen (Department: 2435)

Cryptography

Particular algorithmic function encoding

Public key

C713S176000

Reexamination Certificate

active

07860243

ABSTRACT:
A system is comprised of a user and a group, wherein the group is comprised of a group leader and a group of M members where M is equal to or greater than one. The group leader generates a group public key and a group leader “master” private key. The group leader creates a personalized watermarked or decryption key, also referred to as an individual private key, for each group member. The individual private key uniquely identifies each group member. The group leader distributes the individual private keys to each of the group members. Each group member receives from a user a message encrypted using the group public key. Each of the group members uses its individual private key to decrypt the encrypted message sent by the user to the group.

REFERENCES:
patent: 5604801 (1997-02-01), Dolan et al.
patent: 6035402 (2000-03-01), Vaeth et al.
patent: 6393563 (2002-05-01), Maruyama et al.
patent: 6530020 (2003-03-01), Aoki
patent: 6636968 (2003-10-01), Rosner et al.
patent: 6748528 (2004-06-01), Greenfield
patent: 6802002 (2004-10-01), Corella
patent: 6834112 (2004-12-01), Brickell
patent: 6880081 (2005-04-01), Itkis
patent: 6904524 (2005-06-01), Jaeger, Jr. et al.
patent: 6915434 (2005-07-01), Kuroda et al.
patent: 7093133 (2006-08-01), Hopkins et al.
patent: 2001/0034836 (2001-10-01), Matsumoto et al.
patent: 2002/0026575 (2002-02-01), Wheeler et al.
patent: 2002/0078355 (2002-06-01), Samar
patent: 2002/0120840 (2002-08-01), Yellepeddy et al.
patent: 2002/0144109 (2002-10-01), Benantar et al.
patent: 2002/0154782 (2002-10-01), Chow et al.
patent: 2003/0023847 (2003-01-01), Ishibashi et al.
patent: 2003/0081789 (2003-05-01), Numao et al.
patent: 2003/0120931 (2003-06-01), Hopkins et al.
patent: 2003/0154376 (2003-08-01), Hwangbo
patent: 2003/0163700 (2003-08-01), Paatero
patent: 2003/0237004 (2003-12-01), Okamura
patent: 2004/0039925 (2004-02-01), McMillan et al.
patent: 2004/0054913 (2004-03-01), West
patent: 2004/0068650 (2004-04-01), Restnitzky et al.
patent: 2004/0264697 (2004-12-01), Gavrilescu et al.
patent: 2005/0097316 (2005-05-01), Kim
patent: 2005/0114862 (2005-05-01), Bisdikian et al.
patent: 2005/0138374 (2005-06-01), Zheng et al.
patent: 2006/0155985 (2006-07-01), Canard et al.
Zheng et al. U.S. Patent Application, Cryptographic Key Backup and Escrow System, U.S. Appl. No. 11/019,069, filed Dec. 21, 2004.
Suarez U.S. Patent Application, A Method of Securing a Digital Signature, U.S. Appl. No. 11/487,272, filed Jul. 14, 2006.
Suarez et al. U.S. Patent Application, Automated Key Management System, U.S. Appl. No. 11/473,665, filed Jun. 23, 2006.
PCT International Search Report, PCT/US04/43283, filed Dec. 22, 2004.
PCT International Search Report, PCT/US06/25027, filed Jun. 26, 2006.

Affiliated with

Also associated with

Rating

Public key encryption for groups does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Public key encryption for groups, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Public key encryption for groups will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4160569