Cryptography – Key management – Key distribution
Reexamination Certificate
2005-11-29
2005-11-29
Sheikh, Ayaz (Department: 2131)
Cryptography
Key management
Key distribution
C380S255000, C380S281000
Reexamination Certificate
active
06970566
ABSTRACT:
A network system providing secure service facility has a central control & management equipment to enable unified key management. The network includes a plurality of switching equipment and central control & management equipment, each of which includes encryption section. The encryption section of central management & control equipment encrypts; (a) a public key of switching equipment of a called party (i.e. terminating switching equipment); and, (b) a common key for encrypting message to be transferred between switching equipment. This is carried out each time a call requesting secure communication is originated. Then, the encrypted keys are delivered to the switching equipment of a calling party (i.e. originating switching equipment). Central management & control equipment maintains public keys of any switching equipment in a database.
REFERENCES:
patent: 5124117 (1992-06-01), Tatebayashi et al.
patent: 5239294 (1993-08-01), Flanders et al.
patent: 5351293 (1994-09-01), Michener et al.
patent: 5402490 (1995-03-01), Mihm, Jr.
patent: 5410602 (1995-04-01), Finkelstein et al.
patent: 5509054 (1996-04-01), Garland
patent: 5689563 (1997-11-01), Brown et al.
patent: 5724426 (1998-03-01), Rosenow et al.
patent: 5838792 (1998-11-01), Ganesan
patent: 5901284 (1999-05-01), Hamdy-Swink
patent: 5903649 (1999-05-01), Schwenk
patent: 5956403 (1999-09-01), Lipner et al.
patent: 5960086 (1999-09-01), Atalla
patent: 6026163 (2000-02-01), Micali
patent: 6067546 (2000-05-01), Lund
patent: 6088449 (2000-07-01), Atalla
patent: 6118993 (2000-09-01), Patel
patent: 6154543 (2000-11-01), Baltzley
patent: 6253322 (2001-06-01), Susaki et al.
patent: 6584563 (2003-06-01), Kikuchi et al.
patent: 6711264 (2004-03-01), Matsumoto et al.
patent: 6775382 (2004-08-01), Al-Salqan
patent: 60-176355 (1985-09-01), None
patent: 61-294563 (1986-12-01), None
patent: 2-82836 (1990-03-01), None
patent: 2000-134193 (1998-10-01), None
CCS#7 Networks Dependability Studies: Phase 2. Jun. 1998. p. 1-37.
Buckles, Cheryl. SS7 Gateways serve and protect. Nov. 20, 1989. Telephony. p. 1-5.
Access Points on Narrowband Data Circuits in Modern Carrier Environments. Oct. 1997. p. 1-6.
Forgia Christian La
Fujitsu Limited
Katten Muchin & Rosenman LLP
Sheikh Ayaz
LandOfFree
Network system and method for secure communication service does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Network system and method for secure communication service, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Network system and method for secure communication service will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3516468