Very recently, a number of intelligent applications have evolved in smart cities such as smart grid, smart parking, smart waste management, smart manufacturing, smart home, and smart health, making our cities more smarter. In the context of smart health, smart devices are employed to collect and transmit biomedical information to a medical server, allowing medical practitioners to give better and improved healthcare services. However, considering the sensitive nature of the medical data, any illegal access may have devastating effects on the patient's health condition. A lightweight privacy-preserving authentication and fine-grained access control scheme for smart health known as PAASH is proposed. In PAASH, a new ultraefficient certificateless signature scheme with compact aggregation is developed to achieve source authentication and data integrity. To achieve efficient user authorization and data confidentiality, a privacy-preserving access control technique using the developed aggregate signature and ciphertext-policy attribute-based encryption (CP-ABE) is implemented. An analysis of PAASH reveals that it can provide desirable privacy and security measures in smart health. Moreover, the formal security demonstrated in the random oracle model (ROM) shows that PAASH is semantically secure under the intractability of the Discrete Logarithm Problem (DLP). The performance evaluation shows that PAASH is par excellence practically suitable for smart health.

最近，智能城市中出现了许多智能应用，例如智能电网，智能停车，智能废物管理，智能制造，智能家居和智能健康，使我们的城市更加智能。在智能健康的背景下，采用智能设备来收集生物医学信息并将其传输到医疗服务器，从而使从业人员能够提供更好和改善的医疗服务。但是，考虑到医疗数据的敏感性，任何非法访问都可能对患者的健康状况造成毁灭性影响。提出了一种用于智能健康的轻量级隐私保护身份验证和细粒度访问控制方案，称为PAASH。在PAASH中，开发了一种新的具有紧凑聚合的超高效无证书签名方案，以实现源身份验证和数据完整性。为了实现有效的用户授权和数据机密性，实现了一种使用开发的聚合签名和基于密文策略的基于属性的加密（CP-ABE）的隐私保护访问控制技术。对PAASH的分析表明，它可以在智能健康中提供理想的隐私和安全措施。此外，随机预言模型（ROM）演示的形式安全性表明PAASH在离散对数问题（DLP）难以处理的情况下在语义上是安全的。性能评估表明，PAASH在实践上非常适合智能健康。使用开发的聚合签名和基于密文策略的基于属性的加密（CP-ABE）实现了隐私保护访问控制技术。对PAASH的分析表明，它可以在智能健康中提供理想的隐私和安全措施。此外，随机预言模型（ROM）演示的形式安全性表明PAASH在离散对数问题（DLP）难以处理的情况下在语义上是安全的。性能评估表明，PAASH在实践上非常适合智能健康。使用开发的聚合签名和基于密文策略的基于属性的加密（CP-ABE）实现了隐私保护访问控制技术。对PAASH的分析表明，它可以在智能健康中提供理想的隐私和安全措施。此外，随机预言模型（ROM）演示的形式安全性表明PAASH在离散对数问题（DLP）难以处理的情况下在语义上是安全的。性能评估表明，PAASH在实践上非常适合智能健康。随机预言机模型（ROM）中显示的形式安全性表明，在离散对数问题（DLP）难以处理的情况下，PAASH在语义上是安全的。性能评估表明，PAASH在实践上非常适合智能健康。随机预言机模型（ROM）中显示的形式安全性表明，在离散对数问题（DLP）难以处理的情况下，PAASH在语义上是安全的。性能评估表明，PAASH在实践上非常适合智能健康。