Cheng Guo

TL;DR: This protocol, inspired by the semi-group property of Chebyshev maps and key agreement protocols based on chaotic maps, has comprehensive characteristics and can withstand attacks, including the insider attack, replay attack, and others, satisfying essential security requirements.

TL;DR: A novel framework for controlling access to EHRs stored in semi-trusted cloud servers (e.g. a private cloud or a community cloud) is proposed and the ciphertext-policy attribute-based encryption (CP-ABE) technique is used to encrypt tables published by hospitals, including patients’ Ehrs, and the primary key is stored in the database with the patient’s unique identity.

TL;DR: This paper uses Tassa's hierarchical secret sharing to propose a hierarchical threshold secret image sharing scheme, in which the shadow images are partitioned into several levels, and the threshold access structure is determined by a sequence of threshold requirements.

TL;DR: This paper proposes a multi-phrase ranked search over encrypted cloud data, which also supports dynamic update operations, such as adding or deleting files, and used an inverted index to record the locations of keywords and to judge whether the phrase appears.

TL;DR: This article designs an improved symmetric homomorphic cryptosystem and a fog-based communication architecture to support delay- or time-sensitive monitoring and other-related applications and demonstrates that the approach enables privacy-assured medical data aggregation.