Apparatus and method for securing electronic information in a wi

Details Apparatus and method for securing electronic information in a wi Apparatus and method for securing electronic information in a wi

1996-12-31

1999-09-21

Beausoliel, Jr., Robert W.

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

34082531, 34082534, G06F 1214

Patent

active

059548177

ABSTRACT:
An apparatus (200) for securing electronic information (205) includes a microcontroller (202) and an external memory (204) coupled thereto. The microcontroller (202) comprises a one-time programmable security flag (230) that is programmed when the electronic information (205) is stored in the memory (204). Once programmed, the security flag prevents reprogramming of the memory (204). Additionally, the microcontroller (202) comprises an algorithm (400) that generates electronic authentication information (207) from the electronic information (205). The authentication information (207) is stored in the memory (204) along with the electronic information (205). Upon retrieval from the memory (204) for registration, the electronic information (205) is authenticated by generating new electronic authentication information (508) via the algorithm (400) to compare to the authentication information (207) stored in the memory (204). Such authentication prevents swapping out of the memory (204) to gain system access.

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