Title:
通信データの暗号化／復号方法及びシステム
Document Type and Number:
Japanese Patent JP6667174
Kind Code:
B2
Abstract:
The objective of the present invention is to reduce operating costs on a device side having poor computer resources, while maintaining security. In the present invention, an encryption device comprises: an exclusive OR computing unit which executes an exclusive OR computation between plaintext and a first keystream to generate first encrypted text; an error correcting coding unit which subjects the first encrypted text to error correction coding to generate second encrypted text; and a decimator which subjects the second encrypted text to decimation using a second keystream to generate third encrypted text; and a decryption device comprises: an error correcting decoding unit which subjects the third encrypted text to error correcting decoding using the second keystream to generate fourth encrypted text; and an exclusive OR computing unit which executes an exclusive OR computation between the fourth encrypted text and the first keystream and outputs plaintext.
More Like This:
| JPH04269035 | SCRAMBLER CIRCUIT |
| WO/2018/092313 | COMMUNICATION DEVICE, COMMUNICATION SYSTEM AND COMMUNICATION METHOD |
| JP2007116753 | ENCRYPTION APPARATUS |
Inventors:
Mitsuta Matsuura
Myodrug Mihayevich
Myodrug Mihayevich
Application Number:
JP2015160720A
Publication Date:
March 18, 2020
Filing Date:
August 17, 2015
Export Citation:
Assignee:
National University Corporation Tokyo University
International Classes:
H04L9/18
Domestic Patent References:
| JP9149386A | ||||
| JP6231536A |
Foreign References:
| US20030012372 | ||||
| US20130108039 |
Other References:
Miodrag J. MIHALJEVIC, et al.,Evaluation of an Approach for Security Enhancement of Certain Lightweight Stream Ciphers,2015年 暗号と情報セキュリティシンポジウム SCIS2015 [CD-ROM],日本,電子情報通信学会情報セキュリティ研究専門委員会,2015年 1月20日,2E1-5,p.1-8
Attorney, Agent or Firm:
Shigeru Inaba