Authentication communicating semiconductor device

Details Authentication communicating semiconductor device Authentication communicating semiconductor device

2006-09-12

2006-09-12

Song, Hosuk (Department: 2135)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

C713S192000, C713S194000

Reexamination Certificate

active

07107458

ABSTRACT:
In an authentication communicating semiconductor device to enhance protection against illegal copying, a logic analyzer probe or the like is connected to a CPU bus to suppress possibility in which the authentication process is intercepted and is analyzed to break the mechanism of illegal copy protection and the electronic device is modified to set a tampered encryption key to the CPU bus. The authentication communicating semiconductor device includes a semiconductor chip, a main processing unit formed on the chip for generating a key code according to a predetermined algorithm, for determining approval
on-approval of communication of data with an external device, and for controlling the communication; an encryption unit formed on the chip for encrypting and decoding communication data using the key code generated by the main processing unit, and an interface unit formed on the chip for conducting communication with an upper-layer or a lower-layer according to a predetermined protocol.

REFERENCES:
patent: 6101255 (2000-08-01), Harrison et al.
patent: 6343281 (2002-01-01), Kato
patent: 6466668 (2002-10-01), Miyazaki et al.
patent: A 07 50663 (1995-02-01), None
“5C Digital Transmission Content Protection White Paper”, Rev. 1.0, Jul. 14, 1998.

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