Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Packet header designating cryptographically protected data
Reexamination Certificate
2011-07-26
2011-07-26
Arani, Taghi T (Department: 2438)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Packet header designating cryptographically protected data
C713S171000, C726S022000, C726S023000, C709S225000, C705S051000, C380S278000
Reexamination Certificate
active
07987359
ABSTRACT:
In an information communication system, information communication devices exchange an IP packet over IP networks. When performing a predetermined packet exchanging procedure in which the number of router hops is limited to a predetermined control value or less, each of the information communication devices monitors Time-To-Live values designated in the headers of IP packets received over a period of time from the start of the predetermined packet exchanging procedure to immediately before the end of the predetermined packet exchanging procedure to continuously update the maximum Time-To-Live value of the monitored Time-To-Live values, and checks whether the maximum Time-To-Live value does not exceed the control value.
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Aoki Yukihiko
Gomi Hideho
Izumi Yuichi
Kawano Shinichi
Morita Takao
Arani Taghi T
Mehedi Morshed
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Sony Corporation
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