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.
Patent No.:
Date of Patent:
Jun. 17, 2025
Filed:
Mar. 25, 2020
Applicant:
Nec Corporation, Tokyo, JP;
Inventors:
Hiroyuki Toyama, Tokyo, JP;
Misao Ishihara, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01); H04L 9/06 (2006.01); H04L 9/14 (2006.01);
U.S. Cl.
CPC ...
H04L 9/088 (2013.01); H04L 9/0618 (2013.01); H04L 9/0894 (2013.01); H04L 9/14 (2013.01);
Abstract
An encryption terminal includes a terminal communication unit that receives an encryption algorithm for creating ciphertext from plaintext, the encryption algorithm being encrypted using a first one-time key in a one-time pad method, a terminal storage unit that stores a key table containing a second one-time key corresponding to the first one-time key, and a decryption unit that decrypts the encrypted encryption algorithm by using the second one-time key.