Cryptography – Key management – Key distribution
Reexamination Certificate
1999-09-22
2009-10-20
Truong, Thanhnga B (Department: 2438)
Cryptography
Key management
Key distribution
C380S277000, C380S028000, C380S029000, C380S262000, C380S283000, C713S171000, C726S009000, C726S020000, C705S064000, C705S065000
Reexamination Certificate
active
07606369
ABSTRACT:
A process is described which can be used to generate a cryptographic key for a group of subscribers whose number is subject to change. The process can further provide that even after the group key has been established, subscribers can be removed from or added to the key directory without great effort.
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Deutsche Telekom AG
Kenyon & Kenyon LLP
Truong Thanhnga B
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