Portable electronic device and its secret information collation

Details Portable electronic device and its secret information collation Portable electronic device and its secret information collation

1989-12-20

1991-03-26

Tarcza, Thomas H.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

235382, H04K 100

Patent

active

050035940

ABSTRACT:
A secret information collation method is used between electronic apparatuses that included a portable electronic device and an information processing device. The portable electronic device can include an arithmetic processing section and a memory section for storing therein a processing program to be executed by the arithmetic processing section and first secret information. The portable electronic device collating second secret information inputted from the outside with the first secret information and performing predetermined operation in response to an operation request from the outside satisfying predetermined secret information relationship. A portable electronic device includes an arithmetic processing section and a memory section for storing therein a processing program to be executed by the arithmetic processing section and first secret information such as a secret identification number. The memory section stores a secret information input processing program for calling upon an external information processing device to transfer second secret information corresponding to the first secret information, and a secret information collation program.

REFERENCES:
patent: 4271482 (1981-06-01), Giraud
patent: 4450535 (1984-05-01), de Pommery et al.
patent: 4453074 (1984-06-01), Weinstein
patent: 4575621 (1986-03-01), Dreifus
patent: 4701601 (1987-10-01), Francini et al.
patent: 4746788 (1988-05-01), Kawana
patent: 4827113 (1989-05-01), Rikuna
patent: 4827512 (1989-05-01), Hirokawa et al.

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