Data transmission system

Details Data transmission system Data transmission system

2011-08-23

2011-08-23

Barron, Jr., Gilberto (Department: 2432)

Cryptography

Key management

Having particular key generator

C726S031000

Reexamination Certificate

active

08005214

ABSTRACT:
A cipher key is generated by first information shared in secrete between a data transmitting unit10and a data receiving unit20, second information derived from duplication control information of transmit data and third information which is time change information shared between the data transmitting unit and the data receiving unit to cipher data by a CPU12by using the above-mentioned cipher key to transmit, from the data transmitting unit10to the data receiving unit20, transmit data in which the duplication control information and the time change information are added to the ciphered data.

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