基于密文策略的属性集合加密(ciphertext-policy attribute-sets based encryption,CP-ASBE)是一种更具有实用性的适用于细粒度访问控制的加密方法。针对现有CP-ASBE策略构建复杂的问题,提出了一种改进的CP-ASBE策略。该策略简化了用户...基于密文策略的属性集合加密(ciphertext-policy attribute-sets based encryption,CP-ASBE)是一种更具有实用性的适用于细粒度访问控制的加密方法。针对现有CP-ASBE策略构建复杂的问题,提出了一种改进的CP-ASBE策略。该策略简化了用户的密钥结构,而且选用AND门作为策略的访问结构,只有用户的密钥结构满足AND门访问结构才能解密密文。通过分析表明,该策略在判定双线性Diffie-Hellman假定条件下是选择明文攻击安全的。由实验结果可以得出,相比现有策略,该策略具有较高的加密和解密效率。展开更多
针对现有密文策略的属性集合加密CP-ASBE(Ciphertext-Policy Attribute-Sets Based Encryption)构建复杂以及无法达到更高的安全性要求的问题,提出一种改进的CP-ASBE方案。该方案通过简化用户的密钥结构以及仅考虑AND门的访问结构进行构...针对现有密文策略的属性集合加密CP-ASBE(Ciphertext-Policy Attribute-Sets Based Encryption)构建复杂以及无法达到更高的安全性要求的问题,提出一种改进的CP-ASBE方案。该方案通过简化用户的密钥结构以及仅考虑AND门的访问结构进行构建,为增强其安全性,方案引入强存在性不可伪造签名机制。通过分析证明,该策略在判定双线性Diffie-Hellman假定条件下是选择密文攻击安全的。模拟实验表明,相比现有方案,该方案具有较高的加密和解密效率。展开更多
With the development of marine information technology,ship radar data increases geometrically,and the traditional local server storage architecture has become increasingly unable to meet the requirements of modern shi...With the development of marine information technology,ship radar data increases geometrically,and the traditional local server storage architecture has become increasingly unable to meet the requirements of modern ship radar data capacity,so cloud storage has gradually become the mainstream technology of radar data storage.At the same time,because the marine communication network is more vulnerable to external attacks and environmental interference,high-density encryption technology suitable for cloud storage is needed.In this paper,a ship radar cloud storage platform based on big data is studied,and a high-density encryption algorithm CP-ASBE is designed.Finally,simulation is carried out.展开更多
文摘基于密文策略的属性集合加密(ciphertext-policy attribute-sets based encryption,CP-ASBE)是一种更具有实用性的适用于细粒度访问控制的加密方法。针对现有CP-ASBE策略构建复杂的问题,提出了一种改进的CP-ASBE策略。该策略简化了用户的密钥结构,而且选用AND门作为策略的访问结构,只有用户的密钥结构满足AND门访问结构才能解密密文。通过分析表明,该策略在判定双线性Diffie-Hellman假定条件下是选择明文攻击安全的。由实验结果可以得出,相比现有策略,该策略具有较高的加密和解密效率。
文摘针对现有密文策略的属性集合加密CP-ASBE(Ciphertext-Policy Attribute-Sets Based Encryption)构建复杂以及无法达到更高的安全性要求的问题,提出一种改进的CP-ASBE方案。该方案通过简化用户的密钥结构以及仅考虑AND门的访问结构进行构建,为增强其安全性,方案引入强存在性不可伪造签名机制。通过分析证明,该策略在判定双线性Diffie-Hellman假定条件下是选择密文攻击安全的。模拟实验表明,相比现有方案,该方案具有较高的加密和解密效率。
文摘With the development of marine information technology,ship radar data increases geometrically,and the traditional local server storage architecture has become increasingly unable to meet the requirements of modern ship radar data capacity,so cloud storage has gradually become the mainstream technology of radar data storage.At the same time,because the marine communication network is more vulnerable to external attacks and environmental interference,high-density encryption technology suitable for cloud storage is needed.In this paper,a ship radar cloud storage platform based on big data is studied,and a high-density encryption algorithm CP-ASBE is designed.Finally,simulation is carried out.
