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:
Aug. 10, 2010

Filed:

Apr. 28, 2005
Applicants:

Yuichi Futa, Osaka, JP;

Masato Yamamichi, Ota, JP;

Masami Yamamichi, Legal Representative, Ota, JP;

Satomi Yamamichi, Legal Representative, Ota, JP;

Keiko Yamamichi, Legal Representative, Maebashi, JP;

Motoji Ohmori, Hirakata, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04K 1/00 (2006.01); H04L 9/30 (2006.01); G06F 7/58 (2006.01); H04L 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An encrypted communication system, capable of performing processing with the speed higher than the conventionally achieved speed, includes an encryption device and a decryption device sharing parameters that satisfy p=3 and q=2^k (k: an integer of 2 or greater). The decryption device generates a public key and a private key using the parameters, the encryption device encrypts a plain text using the public key, and then, the decryption device decrypts the encrypted text using its own private key.


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