在云计算环境下,网络安全协议的执行环境变得更为复杂,应用Web安全问题开放授权协议,可以提高信息共享的安全性.本文采用CPN(Colored Petri Net)对OAuth协议进行建模,使用仿真工具CPNTools分析OAuth协议授权码模式的相关性质,并通过仿...在云计算环境下,网络安全协议的执行环境变得更为复杂,应用Web安全问题开放授权协议,可以提高信息共享的安全性.本文采用CPN(Colored Petri Net)对OAuth协议进行建模,使用仿真工具CPNTools分析OAuth协议授权码模式的相关性质,并通过仿真实验表明授权码模式可以基于令牌进行验证与授权,防止针对授权码的CSRF注入攻击.展开更多
Identity-based public cloud storage auditing schemes can check the integrity of cloud data, and reduce the complicated certificate management. In such a scheme, one Private Key Generator(PKG) is employed to authentica...Identity-based public cloud storage auditing schemes can check the integrity of cloud data, and reduce the complicated certificate management. In such a scheme, one Private Key Generator(PKG) is employed to authenticate the identity and generate private keys for all users, and one Third Party Auditor(TPA) is employed to by users to check the integrity of cloud data. This approach is undesirable for large-scale users since the PKG and the TPA might not be able to afford the heavy workload. To solve the problem, we give a hierarchical Private Key Generator structure for large-scale user groups, in which a root PKG delegates lower-level PKGs to generate private keys and authenticate identities. Based on the proposed structure, we propose an authorized identity-based public cloud storage auditing scheme, in which the lowest-level PKGs play the role of TPA, and only the authorized lowest-level PKGs can represent users in their domains to check cloud data's integrity. Furthermore, we give the formal security analysis and experimental results, which show that our proposed scheme is secure and efficient.展开更多
文摘在云计算环境下,网络安全协议的执行环境变得更为复杂,应用Web安全问题开放授权协议,可以提高信息共享的安全性.本文采用CPN(Colored Petri Net)对OAuth协议进行建模,使用仿真工具CPNTools分析OAuth协议授权码模式的相关性质,并通过仿真实验表明授权码模式可以基于令牌进行验证与授权,防止针对授权码的CSRF注入攻击.
基金supported by National Natural Science Foundation of China (No. 61572267, No. 61272425, No. 61402245)the Open Project of Co-Innovation Center for Information Supply & Assurance Technology, Anhui University+1 种基金the Open Project of the State Key Laboratory of Information Security,Institute of Information Engineering,Chinese Academy of Sciences(No.2017-MS-21, No.2016-MS-23)National Cryptography Development Fund of China (MMJJ20170118)
文摘Identity-based public cloud storage auditing schemes can check the integrity of cloud data, and reduce the complicated certificate management. In such a scheme, one Private Key Generator(PKG) is employed to authenticate the identity and generate private keys for all users, and one Third Party Auditor(TPA) is employed to by users to check the integrity of cloud data. This approach is undesirable for large-scale users since the PKG and the TPA might not be able to afford the heavy workload. To solve the problem, we give a hierarchical Private Key Generator structure for large-scale user groups, in which a root PKG delegates lower-level PKGs to generate private keys and authenticate identities. Based on the proposed structure, we propose an authorized identity-based public cloud storage auditing scheme, in which the lowest-level PKGs play the role of TPA, and only the authorized lowest-level PKGs can represent users in their domains to check cloud data's integrity. Furthermore, we give the formal security analysis and experimental results, which show that our proposed scheme is secure and efficient.
