System and methods for data encryption using public key cryptogr

Details System and methods for data encryption using public key cryptogr System and methods for data encryption using public key cryptogr

1995-05-30

1996-10-08

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Public key

H04L 930

Patent

active

055639500

ABSTRACT:
An integrated circuit ("IC") chip is provided having both a public key cryptographic engine and a fuse array thereon. The fuse array is hardwired to the public key cryptographic engine and is encoded with a private key for use by the cryptographic engine. Specifically, prior to encapsulation of the IC chip, the fuse array is encoded using a laser ablation process. Upon encapsulation, the private key is permanently sealed and secured within the IC chip. The fuse array may also have a public key hash value and a serial number encoded therein.

REFERENCES:
patent: 4658093 (1987-04-01), Hellman
patent: 4731841 (1988-03-01), Rosen et al.
patent: 5144665 (1992-09-01), Takaragi et al.
patent: 5295188 (1994-03-01), Wilson et al.
patent: 5343527 (1994-08-01), Moore
patent: 5368468 (1995-01-01), Akiyama et al.
patent: 5412721 (1995-03-01), Rager et al.
patent: 5414772 (1995-05-01), Naccache et al.

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