How to construct and manage unconditionally secure ID-based crypto-infrastructures

如何构建和管理无条件安全的基于身份的加密基础设施

• 批准号: 12355017
• 负责人: IMAI Hideki
• 金额: $ 19.51万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12355017/
• 关键词: Crypto-infrastructure; Cryptography; Information security; Digital signature; Hash function; Information theory; Secret sharing; ID based

This research project focuses on the unconditionally secure crypto-infrastructures, which guarantees the unforgeability of signatures or certificates issued under the crypto-infrastructures without any unproven computational assumptions. We successfully established a sound and strong notion for such crypto-infrastructures by carefully examining the more established security notions for digital signatures based on public-key cryptography, and by taking into account desirable requirements of signature schemes in the unconditional security setting. We also revealed an interesting relation among relevant security notions which have appeared in the unconditionally setting, and significantly, proved that our new security notion is the strongest among all those for unconditionally secure authentication and signature schemes known to date. Furthermore, we showed that our security notion encompasses that for public-key signature schemes, namely, existential unforgeability under adaptive chosen-message attack. Finally we proposed a concrete method to construction and manage such unconditionally secure crypto-infrastructures that meet our strongest security notion.

该研究项目的重点是无条件安全的密码基础设施，它保证了在密码基础设施下发布的签名或证书的不可伪造性，而无需任何未经证明的计算假设。我们成功地建立了一个健全的和强大的概念，这样的密码基础设施，仔细研究了更成熟的安全概念的数字签名的基础上公钥密码，并考虑到理想的要求，签名方案的无条件安全设置。我们还揭示了一个有趣的关系，相关的安全概念已经出现在无条件设置，并显着，证明了我们的新的安全概念是最强的无条件安全的认证和签名方案的日期。此外，我们表明，我们的安全概念包括公钥签名方案，即存在的不可伪造性下的自适应选择消息攻击。最后，我们提出了一个具体的方法来构建和管理这样的无条件安全的密码基础设施，满足我们最强的安全概念。

项目成果

Semantically secure McEliece public-key cryptosystem

语义安全的 McEliece 公钥密码系统

• 发表时间: 2002
• 期刊: IEICE Trans E85-A,no.1
• 作者: K.Kobara;H.Imai
• 通讯作者: H.Imai

Ahierarchical noninteractive key-sharing scheme with low memory size and high resistance against collusion attack

低内存、高抗共谋攻击的分层非交互式密钥共享方案

• 发表时间: 2002
• 期刊: the Computer Journal(Oxford university press)
• 作者: G.Hanaoka;T.Nishioka;Y.Zheng;H.Imai
• 通讯作者: H.Imai

花岡悟一郎, 四方順司, 今井秀樹: "情報量的安全性に基づく書名方式におけるセンターの分散化方式"第23回情報理論とその応用シンポジウム(SITA2000)予稿集. 583-58 (2000)

Goichiro Hanaoka，Junji Shikata，Hideki Imai：“基于信息安全的书名系统中心分散方法”第23届信息论及其应用研讨会论文集（SITA2000）583-58（2000）。

G.Hanaoka,J.Shikata,Y.Zheng And H.Imai: "Unconditionally Secure Digital Signature Schemes Admitting Transferability"Advances in Cryptology-ASIACRYPT2000,LNCS 1976, Springer-Verlag,. 130-142 (2000)

G.Hanaoka、J.Shikata、Y.Zheng 和 H.Imai：“承认可转移性的无条件安全数字签名方案”密码学进展 - ASIACRYPT2000，LNCS 1976，Springer-Verlag，。

D.Nojiri,G.Hanaoka and H.Imai: "A Practical Implementation of Hierarchically Structured Key Predistribution System and Its Evaluation"ISW2000, LNCS1975 Information Security ISW2000 Proceedings,. 224-236 (2000)

D.Nojiri、G.Hanaoka 和 H.Imai：“分层结构密钥预分配系统的实际实现及其评估”ISW2000，LNCS1975 信息安全 ISW2000 论文集，。