Theory of Distributed Cryptography and its application to Electronic Commerce Systems

分布式密码理论及其在电子商务系统中的应用

• 批准号: 12480073
• 负责人: SAKURAI Kouichi
• 金额: $ 4.61万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12480073/
• 关键词: Cryptography; Information Security; Electronic Money; Electronic Auction; Privacy Protection; Distributed Cryptography; Anonymity; Public-Key Cryptography

A Public Key Infrastructure (PKI) is the one of the important techniques to support secure E-commerce and digital communication on networks. Many PKI trust models have been proposed and are widely used for various purposes.We consider two trust models: A Single CA model and A Subordinated Hierarchical model. The trust model that one Certification Authority (CA) issues all certificates is the simplest one. We call it "A Single CA model". In this model, construction and validation processes of certification path are very simple, however it is attended with danger of the high ratio of exposure CA's secret key. The subordinated hierarchical model mitigated this problem. For this reason, a subordinated hierarchical model is very popular in the real world. In this research, we discuss the advantages and disadvantages of these two models and suggest the PKI trust model that certificate path is shorter than one of a subordinated hierarchical model by using the forward-secure digital signature scheme.

公钥基础设施（PKI）是支持网络上安全的电子商务和数字通信的重要技术之一。已经提出了许多PKI信任模型，并广泛用于各种目的。我们考虑了两种信任模型：单个CA模型和从属层次模型。一个证书颁发机构（CA）颁发所有证书的信任模型是最简单的模型。我们称之为“单个CA模型”。在该模型中，认证路径的构建和验证过程非常简单，但存在CA密钥暴露率高的危险。从属层次模型缓解了这个问题。由于这个原因，从属层次模型在现实世界中非常流行。在本研究中，我们讨论了这两种模型的优缺点，并通过使用前向安全数字签名方案提出了证书路径比从属层次模型短的PKI信任模型。

项目成果

Shingo MIYAZAKI, Kouichi SAKURAI and Moti YUNG: "On Distributed Cryptographic Protocols for Threshold RSA Signing and Decrypting with No Dealer"IEICE Trans.. Vol. E84-A No. 5. 1177-1183 (2001)

Shingo MIYAZAKI、Kouichi SAKURAI 和 Moti YUNG：“关于无经销商的阈值 RSA 签名和解密的分布式加密协议”IEICE Trans.. Vol. 1

D. Hirakiuchi and K. Sakurai: "English vs. Sealed Bid in Anonymous Electronic Auction Protocols"Proc. 13th IEEE International Workshops on Enabling Technologies: Infrastructure for Collaborative Enterprises. 171-176 (2001)

D. Hirakiuchi 和 K. Sakurai：“匿名电子拍卖协议中的英语与密封投标”Proc。

開内大介, 櫻井幸一: "匿名電子オークションプロトコルの考察"2001年暗号と情報セキュリティシンポジウム. (2001)

Daisuke Kaiuchi、Koichi Sakurai：“对匿名电子拍卖协议的考虑”2001 年密码学和信息安全研讨会（2001 年）。

Shingo MIYAZAKI, Kouichi SAKURAI, Moti YUNG: "On Distributed Cryptographic Protocols for Threshold RSA Signing and Decrypting with No Dealer"IEICE Trans.. Vol.E84-A. 1177-1183 (2001)

Shingo MIYAZAKI、Kouichi SAKURAI、Moti YUNG：“关于无经销商的阈值 RSA 签名和解密的分布式加密协议”IEICE Trans.. Vol.E84-A。

古賀 聡, 櫻井 幸一: "認証局の統合と分散の定式化とその考察"コンピューターセキュリティ研究会(CSEC),情報処理学会研究報告. Vol.2003・No.18. 155-160 (2003)

Satoshi Koga、Koichi Sakurai：“证书颁发机构的集成和分发的制定和考虑”计算机安全研究小组（CSEC），日本信息处理学会研究报告第 2003 卷·第 155-160 号（2003 年）。