Data security arrangements for semiconductor programmable device

Details Data security arrangements for semiconductor programmable device Data security arrangements for semiconductor programmable device

1992-10-06

1995-02-07

Gregory, Bernarr E.

Cryptography

Cryptanalysis

380 21, 380 46, 380 49, 380 50, H04L 900

Patent

active

053881575

ABSTRACT:
A programmable logic device comprises a semiconductor with configurable circuitry, an input circuit for encrypted data to determine the configuration of the circuitry, decrypting circuitry responsive to a key value held in a non-volatile data store, and volatile storage circuitry for holding decrypted configuration data. Encrypting circuitry uses the same key value to encrypt configuration data and stores the encrypted configuration data for use in the programmable logic device.

REFERENCES:
patent: 4262329 (1981-04-01), Bright et al.
patent: 4847902 (1989-07-01), Hampson
patent: 5007082 (1991-04-01), Cummins
patent: 5224166 (1993-06-01), Hartman, Jr.

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