Flexible and efficient hash chain constructions and its applications for lightweight authentication

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K00189
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Information security
• Research Institution: Hiroshima City University
• Principal Investigator: Soshi Masakazu 広島市立大学, 情報科学研究科, 准教授 (00293142)
• Research Collaborator: Miyaji Atsuko 大阪大学, 工学系研究科, 教授 (10313701)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: セキュリティ / ネットワーク / IoT / 認証 / プロトコル / ハッシュ関数 / モバイルコンピューティング / ユビキタス

Outline of Final Research Achievements

In recent years, the importance of lightweight and efficient authentication protocols for IoT environments has been increasing. In this work we propose a flexible hash chain construction, hash chain aggregation (HCA), and a scheme to set up a common key for two users with HCA. Our scheme uses only hash functions as cryptographic primitives. Furthermore, in our schemes no communication is required when a common key for two users is set up. We also evaluate security of the scheme extensively. Especially we show that our scheme is secure against a single attacker, but not against two attackers or more. We also show that our scheme is efficient. In this work we examine application of hash functions and lightweight authentication such as one time signatures and white-box cryptography.

Free Research Field

セキュリティ