A proposal of attibute-based aggregate signatures

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K16001
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Information security
• Research Institution: Tohoku University
• Principal Investigator: Hasegawa Shingo 東北大学, 教育情報基盤センター, 助教 (80567214)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: デジタル署名 / 安全性証明 / IDベース署名 / 属性ベース署名

Outline of Final Research Achievements

We propose attibute-based aggregate signatures. We introduce a formal definition and framework of attibute-based aggregate signatures and its security models, and also construct a concrete scheme which satisfies the definition and the security of attibute-based aggregate signatures.
Additionally, we consider several conditions so that signature schemes achieve the provable security which is the standard security notion in the modern cryptography. We give some impossibilities on proving the security of signature scheme, and also give several constructions of signature scheme to avoid such impossibility results and have high security.

Free Research Field

暗号理論