Papers by Keyword: AES

Abstract: The system is based on DES/3DES, AES cipher algorithm as the research object.According to the characteristics of the algorithm, designs a configuration mode which can share resource in space and configurate algorithm in time. Then it uses hardware description language Verilog HDL to realize and optimize the design, and completes a custom reconfigurable DES/3DES/AES encryption/decryption IP core. By SOPC technology, the IP core, Nios II processor, network controller and other function. The design hardware structureis simple, flexibility, security, which can be widely used in the field of informationsecurity.

Abstract: Global ontology and local ontologies can be built to effectively implement data semantic access in integration environment of multiple data sources based on grid computing. Data sources, as a kind of resource in grid, can join and quit grid environment dynamically. In order to ensure consistency between global ontology and local ontologies, we present joining and quitting algorithms for data sources in grid system. During processing of joining and quitting algorithms, global ontology elements were divided into two types of AES(Active Elements Set) and SES(Suspended Elements Set),and we stipulate that only mappings formed by AES can be employed for semantic data processing.

Abstract: The analysis of Auger electron and electron energy-loss spectra was developed to determine an elastic modulus and a relative permittivity of the diamond and tetrahedral amorphous carbon layers (both on the substrate of NiTi alloy), the graphite and graphite-like carbon layers in a carbon/oxidization/ TiNi systems. The description of line-shape carbon Auger spectrum is based on the convolution of two-conduction electron and one-core electron spectral densities. It was concluded that the comparisons of the experimental and theoretical Auger spectra were determined the quantitative assessment of the electron-electron repulsion, which allow us to calculate the relative permittivity of the layer. The analysis of electron plasmon losses was applied to determine the values of plasma energies of the layers. Such parameter values were as then applied to calculate the values of nanoscale properties. The results demonstrated that the property values of the carbon layers were in good agreement with that reported in literature.

Abstract: With the widespread use of battery operating systems, low power designs are highly needed to extend the battery lifetime. Encryption/ decryption circuits are one of the best candidates for low power implementation, as they are needed to maintain the privacy and security of user data. In this work, we present a low power FPGA-based implementation for AES Mix Columns (MC) /Inverse Mix Columns (IMC). The proposed design achieves low power by applying precomputation and resource sharing techniques to the MC and IMC transformation. We compared this implementation with previous work and we found that this implementation provides an average of 28% less power than previous implementations.

Abstract: In order to facilitate the exchange and cooperation for the fusion research, we proposed the high-speed special network environment to achieve the design, research of the program and manage the project contracts, schedule, video conference system and data sharing. The article states the network acceleration mechanisms based-on the HS-TCP protocol and proposes a kind of data encryption based-on AES and SSL and describes the framework of the special network. Then we have verified the feasibility and security of the project by the experiment.

Abstract: AES is a new generation encryption standard which is designed by the American National Institute of Standards and Technology (NIST) to replace DES. This paper described the concrete steps of the AES encryption algorithm which take the 128-bit keys as an example, including SubBytes, ShiftRows, MixColumns and AddRoundKey, and a detailed study of the IC card data encryption with the application of the AES algorithm.

Abstract: Four alloys on the basis of 8-10% CrWVTa steel were melted to study the influence of boron on the structure and precipitation behavior. Boron contents in the alloys amounted to 0.0083 and 0.1 wt.%, respectively. One batch was nearly free of boron. The individual alloys were examined metallographically and characterized in the initial state and after aging treatments up to 800 °C. It was found that the grains of boron-containing alloys were coarsened when the alloys were subjected to tempering. At the same time, the precipitate content was reduced. The different phases of precipitates were analyzed as primary carbides with tantalum and tungsten, and due to the higher content of boron BN, B(C, N), and (Fe, Cr)₂B. M₂₃C₆ was developed in all alloys after the heat treatment.

Abstract: As the daughter of modern wireless communication technology & computer network technology, Wireless Local Area Network(WLAN) is being used widely in many areas. It is well known that WLAN has the advantages such as simple network configuration, high transmission rate, good extensibility and mobility, and convenience to carry, etc. However, its security mechanism is not perfect to guarantee its security because of some design flaws in safety precautions. The application of AES in WLAN improves its data confidentiality. The work presented in this paper focuses on present AES encryption algorithm security problem and optimization of its S Box. The improved algorithm this paper put forward in WLAN, is proved to be efficient.

Abstract: Low energy electron diffraction (LEED), Auger electron spectroscopy (AES) and scanning tunnelling microscopy (STM) were used to study the reactive diffusion of one monolayer of silicon deposited at room temperature onto a Ni (111) substrate. We have done isochronal and isothermal kinetics by AES, and we observed in both cases a kinetics blockage on a plateau corresponding to around one third of a silicon monolayer. STM images and LEED patterns both recorded at room temperature just after annealing, reveal formation of an ordered hexagonal superstructure corresponding probably to a two-dimensional surface silicide.

Abstract: Partial reconfiguration of FPGAs requires loading partial bitstream. But loading a faulty or corrupted partial bitstream might cause some errors when undergoing reprogramming; what’s more, it may damage the FPGA device. A encrypt method based on cyclic redundancy check (CRC) before loading them into the device is introduced. The encrypt method of partial bitstream can realize the data integrity and security of FPGA Partial Reconfiguration.