Cryptography – Communication system using cryptography – Symmetric key cryptography
Reexamination Certificate
2005-09-13
2005-09-13
Barron, Jr., Gilberto (Department: 2132)
Cryptography
Communication system using cryptography
Symmetric key cryptography
C713S151000, C713S178000, C713S168000, C380S239000, C380S240000
Reexamination Certificate
active
06944299
ABSTRACT:
An apparatus and method provide for synchronized operation of encryption processes at two remote communication terminals. A first one of the terminals detects information associated with a current time during the establishment of a connection between the two terminals. The current time information is then utilized to create a start encryption time. That start encryption time information is transmitted from the first terminal to the second terminal. Both terminals then monitor the passage of time and begin encryption in a synchronous manner when the current time matches the start encryption time.
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Mallela Padma P.
Maxwell Robert Lee
Nix David J.
Veintimilla Gregory J.
Yip Adrian M.
AT&T Wireless Services Inc.
Barron Jr. Gilberto
Kenyon and Kenyon
Zand Kambiz
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