Contents data transmission/reception system, contents data...

Details Contents data transmission/reception system, contents data... Contents data transmission/reception system, contents data...

2004-03-16

2008-08-12

Zand, Kimbiz (Department: 2134)

Cryptography

Key management

C713S189000, C713S193000

Reexamination Certificate

active

07412060

ABSTRACT:
In a contents data transmission/reception system, a contents data transmitter generates a plurality of key information, encrypts contents data by using one of the key information, transmits the key information through a plurality of signal routes to a contents data receiver, and then, transmits the encrypted contents data used by the key information through the signal routes to the contents data receiver. The contents data receiver receives the key information and the encrypted contents data transmitted from the contents data transmitter through the signal routes, and decrypts the encrypted contents data by using the key information.

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Hitachi, Ltd. Et al., “5C Digital Transmission Content Protection White Paper—Revision 1.0”, DTCP Group, Jul. 14, 1998, XP002134182.

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