Method of registering identification number in personal communic

Details Method of registering identification number in personal communic Method of registering identification number in personal communic

1993-07-09

1995-01-31

Barron, Jr., Gilberto

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 4, 380 30, 379 62, H04L 930, H04L 932

Patent

active

053864689

ABSTRACT:
Prior to the sale of a personal communication terminal, a secret key is generated and stored in the personal communication terminal in accordance with an application made from the manufacturer to the carrier. At this time, the communication between the manufacturer and the carrier is performed in the form of secret communication with a signature that conforms to a public key system. After the sale, an identification number encrypted with the same key as the secret key is transmitted to the personal communication terminal in accordance with an application made from the user to the carrier. Using the stored secret key, the personal communication terminal decrypts the received identification number for storage therein.

REFERENCES:
patent: 4864599 (1989-09-01), Saegusa et al.
patent: 5020105 (1991-05-01), Rosen et al.
patent: 5077790 (1991-12-01), D'Amico et al.
patent: 5144667 (1992-09-01), Pogue, Jr. et al.
patent: 5150412 (1992-09-01), Maru
patent: 5204902 (1993-04-01), Reeds, III et al.
patent: 5249230 (1993-09-01), Mihm, Jr.

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