Unauthorized access embedded software protection system

Details Unauthorized access embedded software protection system Unauthorized access embedded software protection system

2007-10-16

2007-10-16

Song, Hosuk (Department: 2135)

Cryptography

Communication system using cryptography

Symmetric key cryptography

C380S044000, C713S189000, C713S192000

Reexamination Certificate

active

10658159

ABSTRACT:
An operational system (10) includes a seed-bearing device (12) that has a seed (22). A key-determinative device (14) determines a key in response to the seed (22). A code-determinative device determines the code in response to the key. A controller performs a task in response to the code.

REFERENCES:
patent: 5120939 (1992-06-01), Claus et al.
patent: 6463538 (2002-10-01), Elteto

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