Electronic health record (EHR) system facilitates integrating patients' medical information and improves service productivity. However, user access to patient data in a privacy-preserving manner is still challenging problem. Many studies concerned with security and privacy in EHR systems. Rezaeibagha and Mu [1] have proposed a hybrid architecture for privacy-preserving accessing patient records...

Access control is a fundamental component of the design distributed ledgers, influencing many aspects their functionality, such as fairness, efficiency, traditional notions network security, and adversarial attacks Denial-of-Service (DoS) attacks. 1 In this w...

Hierarchical access control is an important and traditional problem in information security. In 2001, Wu et.al. proposed an elegant solution for hierarchical access control by the secure-filter. Jeng and Wang presented an improvement of Wu et. al.’s method by the ECC cryptosystem. However, secure-filter method is insecure in dynaminc access control. Lie, Hsu and Tripathy, Paul pointed out some ...

In the current environment, data security is paramount, and any confidential files we must have with us everywhere go raise chance of losing such files. To prevent this inconvenient method transporting private information, our suggested solution uses cloud to store users' myriad size in encrypted form, encrypting them using AES-256 version technique ensure that your remains secret. The user no ...

The paper presents a flexible and efficient method to secure the access to a Web site implemented in PHP script language. The algorithm is based on the PHP’s session mechanism. The proposed method is a general one and offers the possibility to implement a PHP based secured access to a Web site, through a portal page and using an additional script included in any site’s page, which is required t...