Liangmin Wang

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—Normally, authentication in vehicular ad-hoc networks (VANETs) uses Public Key Infrastructure (PKI) to verify the integrity of messages and the identity of message senders. The issues considered in the authentication schemes include the level of security and computational efficiency in verification processes. Most existing schemes focus mainly on assuring(More)
The EPC Class-1 Generation-2 specification(Gen-2 in brief) is widely accepted as the standard for RFID tags under grant number ISO18000-6c. However, there are two problems in view of its security authentication protocols. First of all, there is no unified standard for the security requirements, such as which threats should be protected against. Secondly,(More)
—Mobile nodes in the Internet of things often move from one cluster to another, in which cryptography based protocols are required to provide rapid identification authentication and privacy protection. A single-step protocol was presented for the occasion that the mobile node joins a new cluster. The presented protocol contains a valid request message and(More)
The cloud-assisted Body Sensor Networks (BSN) often has an architecture of Multi-hop Wireless Networks (MWN) model, in which both the body sensors and the users must be secure to protect the whole infrastructure. Unfortunately, both the information providers and the users are movable and resource-constrained in communication and computation. Thus some new(More)
Mobile healthcare social networks (MHSNs) have emerged as a promising next-generation healthcare system, which will significantly improve the quality of life. However, there are many security and privacy concerns before personal health information (PHI) is shared with other parities. To ensure patients' full control over their PHI, we propose a fine-grained(More)
Aiming to embed large amount of data while minimize the sum of costs of all changed pixels, a novel high capacity data hiding scheme based on (7, 4) Hamming code is realized by a family of algorithms. Firstly, n (n = 1, 2, 3) cover pixels are assigned to one set according to the payload. Then, 128 binary strings of length seven are divided into eight sets(More)