A cryptographic scheme maintaining security for cloud environments

2015 Fiscal Year Final Research Report

• Project/Area Number: 24700009
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Fundamental theory of informatics
• Research Institution: National Institute of Information and Communications Technology
• Principal Investigator: Emura Keita 国立研究開発法人情報通信研究機構, ネットワークセキュリティ研究所セキュリティ基盤研究室, 主任研究員 (30597018)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 鍵付き準同型暗号 / 適応的暗号文選択攻撃

Outline of Final Research Achievements

It is widely recognized that homomorphic encryption never achieves security against adaptive chosen-ciphertext attack (CCA security). We propose a homomorphic encryption scheme with CCA security by adequately modifying the model of homomorphic encryption which we call keyed-homomorphic encryption. Our result was accepted to PKC 2013 which is a well-known international workshop in the public key encryption area, and was awarded the SCIS Innovation Paper Award from IEICE in 2012.

Free Research Field

公開鍵暗号