The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 19, 2006

Filed:

Aug. 02, 1999
Applicants:

Hirokazu Ougi, Yokohama, JP;

Hideo Takashima, Kanagawa, JP;

Hidenobu Taniguchi, Yokohama, JP;

Munetoshi Kouchi, Yokohama, JP;

Hiroshi Hayami, Tokyo, JP;

Hajime Asada, Yokohama, JP;

Hideki Harazaki, Yachiyo, JP;

Inventors:

Hirokazu Ougi, Yokohama, JP;

Hideo Takashima, Kanagawa, JP;

Hidenobu Taniguchi, Yokohama, JP;

Munetoshi Kouchi, Yokohama, JP;

Hiroshi Hayami, Tokyo, JP;

Hajime Asada, Yokohama, JP;

Hideki Harazaki, Yachiyo, JP;

Assignees:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An operating encryption algorithm is converted to another encryption algorithm. When different encryption algorithms are operated by a personal computerfor use by a group A and a personal computerfor use by group B, an encryption algorithm, operated by the personal computeris encrypted by the personal computerwith the encryption algorithm operated by the personal computerand transmitted to the personal computer


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