Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Reexamination Certificate
2006-07-18
2006-07-18
Nguyen, Cuong (Department: 3661)
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
C382S233000, C713S001000, C705S400000
Reexamination Certificate
active
07079649
ABSTRACT:
A copyright protection scheme downloads data from a server, typically over the World Wide Web to a client for presentation to a user. The downloaded data is cryptographically protected, by encryption and hashing. When displayed by the client, storing and copying functions are selectively disabled in respect of the data, in order to prevent unauthorized copying.
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Bramhill Ian Duncan
Sims Matthew Robert Charles
British Telecommunications public limited company
Nguyen Cuong
Nixon & Vanderhye P.C.
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