Cryptography – Communication system using cryptography
Reexamination Certificate
2005-12-13
2005-12-13
Peeso, Thomas R. (Department: 2132)
Cryptography
Communication system using cryptography
C380S283000, C380S044000
Reexamination Certificate
active
06975726
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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Asano Tomoyuki
Ishiguro Ryuji
Komuro Teruyoshi
Osawa Yoshitomo
Frommer William S.
Frommer & Lawrence & Haug LLP
Peeso Thomas R.
Presson Thomas F.
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