Zhihua Hu

Learn More
The allocation of IP addresses in hybrid wireless networks is one of the most critical issues in all-IP converged wireless networks. The reason is that centralized IP address allocation mechanisms may not be available in networks comprised of heterogeneous mobile wireless devices. In this paper, the authors proposed zero-maintenance address allocation(More)
Energy constraints on sensor nodes pose significant challenges towards extending operational lifetimes and sustainable capacities of wireless sensor networks. We seek to answer two fundamental questions with respect to energy-constrained sensor networks. First, what is the operational lifetime of a particular wireless sensor network under the control of(More)
A new scrambling method of true color images based on AES algorithm is proposed. It takes the structure of true color images into full consideration, and decreases the complexity. The analytical method of cryptography is first used in this paper to analyze the security of disordered images; at the same time, an error-correcting code is designed to prevent(More)
Consumption of bottled water is increasing worldwide. Prior research shows many consumers believe bottled water is convenient and has better taste than tap water, despite reports of a number of water quality incidents with bottled water. The authors explore the demographic and social factors associated with bottled water users in the U.S. and the(More)
This paper proposes a color image digital watermarking method based on valve-value surface. First it builds the valve value of curve surface of the original image to get the outline information of the original image; then it embeds watermarks into the edge of the outline. Because the function used by the method to build valve-value surface has high gliding(More)
This paper proposes a digital watermarking method based on valve-value surface. First it builds the valve value of curve surface of the original image to get the outline information of the original image; then it embeds watermarks into the edge of the outline. Because the function used by the method to build valve-value surface has high gliding property and(More)
This paper utilized the arrangement points of AES_256 key, analyzed the difference features of AES_256, and found a method of collision attack. This paper also made use of connection differential features and collision method of AES_256 to analyze the 72 bytes of the initial key of AES_256, with a complexity of 2128.
Porcine circovirus type 2 (PCV2) is the primary cause of porcine circovirus disease, and ochratoxin A (OTA)-induced oxidative stress promotes PCV2 replication. In humans, selenoprotein S (SelS) has antioxidant ability, but it is unclear whether SelS affects viral infection. Here, we stably transfected PK15 cells with pig pCDNA3.1-SelS to overexpress SelS.(More)
Serpent is an SP Network block cipher submitted to the AES competition and chosen as one of its five finalists. The security of Serpent is widely acknowledged, especially as the best known attack so far is a differential-linear attack on only 11 rounds out of the 32 rounds of the cipher. This paper proposed impossible differential-algebraic cryptanalysis of(More)