针对云存储环境中单授权中心的安全性问题,提出一种以CP-ABE模型为基础,同时基于联盟区块链的可撤销多授权机构访问控制模型(Revocable Multi-Authority Access Control Based on Consortium Blockchain,RMACB).该模型以树形结构描述属...
详细信息
针对云存储环境中单授权中心的安全性问题,提出一种以CP-ABE模型为基础,同时基于联盟区块链的可撤销多授权机构访问控制模型(Revocable Multi-Authority Access Control Based on Consortium Blockchain,RMACB).该模型以树形结构描述属性授权中心(Attribute Authority,AA),同时利用可信证书链(Trusted Certificate Chain,TCC)和成员服务提供商(Membership Service Provider,MSP)对联盟链上的节点进行身份管理和权限控制.将用户密钥嵌入到密文中去,实现可撤销的云访问控制技术,由云服务提供商来执行重加密过程,减轻了数据所有者的加密负担.实验验证了提出方案具有更低的计算成本和较高的安全性.
Medical imaging is now being reshaped by artificial intelligence (AI) and progressing rapidly toward *** this article,we review the recent progress of AI-enabled medical ***,we briefly review the background about AI i...
详细信息
Medical imaging is now being reshaped by artificial intelligence (AI) and progressing rapidly toward *** this article,we review the recent progress of AI-enabled medical ***,we briefly review the background about AI in its way of ***,we discuss the recent successes of AI in different medical imaging tasks,especially in image segmentation,registration,detection and ***,we illustrate several representative applications of AI-enabled medical imaging to show its advantage in real scenario,which includes lung nodule in chest CT,neuroimaging,mammography,and ***,we report the way of human-machine *** believe that,in the future,AI will not only change the traditional way of medical imaging,but also improve the clinical routines of medical care and enable many aspects of the medical society.
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