Xinyu et al. proposed a public key exchange protocol, which is based on the NTRU-lattice based cryptography. In this paper, we show how Xinyu et al.’s NTRU-KE: A lattice based key exchange protocol can be broken, under the assumption that a man-in-the middle attack is used for extracting private keys of users who participate in the key exchange protocol.

Relations between the microstructure, mechanical properties and machinability of as-cast 65Cu-35Zn brass with various amounts of Al from 0 to 4.72 and Si from 0 to 3.62 wt% were investigated. Both Si and Al initially enhanced the UTS and toughness of the brass samples, which led to improvement in machinability due to a reduction in the main cutting force. A duplex brass with random oriented α p...

The formation of microporosity in modified Al-Si alloys has been reviewed in the present study. A major concern in modification is the increased tendency to form microporosity in the macro-shrinkage free Al-Si alloy castings. It has also been demonstrated that at low hydrogen contents (0.1cc/ 100g, Al), where only shrinkage porosity should occur, the effect of Sr-modification on porosity conten...

Thin film materials of the semiconductors, such as silicon (Si), germanium (Ge) or their alloys, are turning into the most promising functional materials in the energy technology. However, the morphologies of these semiconductor thin films must be varied to be suitable for the different applications, e.g. a large-grained layer as the seed layer of thin film solar cells, a porous structure for a...

In this study the influence of the crystallographic surface orientation of n-type Si wafers on the contact formation of Ag/Al thick film pastes to p-type Si layers is investigated. Therefore, n-type Si wafers with two different crystallographic orientations, namely polished (111) and (100) FZ wafers, with BBr3 based emitter and 75 nm SiNx:H are screen-printed with Ag/Al paste. Then contacts are...

The microstructure, mechanical properties, and wear behavior of three Al–Si alloys, namely: Al–1.3%Si, Al–1.5%Si Al–13.5%Si were investigated. specimens examined by using an optical microscope to investigate the microstructural features pin materials. Microhardness numbers parameters determined a microhardness indenter compression test, respectively. dry sliding test was carried out pin-on-disc...

The application of the subhalide reaction to Al refining has recently been a subject of increasing concern as a process to obtain pure Al from crude Al alloys. In this process, the ternary Al-Si-Fe alloy containing various amounts of Si and Fe which is produced(1)-(3) by the direct reduction of bauxite or alumina-bearing ores is used as the raw material. Therefore, on obtaining pure Al from Al-...