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11阶幻方与等幂和
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作者 张在明 《玉溪师范学院学报》 2020年第3期1-5,共5页
推介两个漂亮的11阶完美幻方,利用对称化得到26组等幂和代数恒等式.
关键词 11阶完美对称幻方 等幂和 对称化 恒等式
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A Block Cipher Algorithm Based on Magic Square for Secure E-bank Systems
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作者 Farah Tawfiq Abdul Hussien Abdul Monem S.Rahma Hala Bahjat Abdul Wahab 《Computers, Materials & Continua》 SCIE EI 2022年第10期1329-1346,共18页
Nowadays the E-bank systems witnessed huge growth due to the huge developments in the internet and technologies.The transmitted information represents crucial information that is exposed to various kinds of attacks.Th... Nowadays the E-bank systems witnessed huge growth due to the huge developments in the internet and technologies.The transmitted information represents crucial information that is exposed to various kinds of attacks.This paper presents a new block cipher technique to provide security to the transmitted information between the customers and the ebank systems.The proposed algorithm consists of 10 rounds,each round involves 5 operations.The operations involve Add round key,Sub bytes,Zigzag method,convert to vector,and Magic Square of order 11.The purpose of this algorithm is to make use of the complexity of the Magic Square algorithm,the speed of addition operation,the confusion provided by the zigzag,using these operations with Galois field 28 GF(28),and repeating these operations for several rounds to build fast high secure encryption algorithm.This algorithm is designed to provide fast with high complexity and security which is suitable to encrypt the data that is transmitted over the internet.Speed,complexity,and The National Institute of Standards and Technology Framework NIST suite tests were done.The complexity of the proposed algorithm is=((256)32)r+1∗((256)89)r+1+(256)121.The proposed technique gives higher speed and security in the encryption and decryption phases,according to the results of the experiments.The degree of randomness has grown by 31.8 percent.Due to a decrease in the time of encrypting and decrypting,as well as the usage of the central processing unit(CPU),efficiency is improved.The encryption process throughput is enhanced by 13%,while the decryption process throughput is increased by 11.6 percent with the recommended approach. 展开更多
关键词 Block cipher magic square order 11 COMPLEXITY NIST suite ZIGZAG GF(28) MS11
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压缩感知理论在红外成像中的应用
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作者 张西红 李永浩 康健 《军械工程学院学报》 2011年第1期60-63,共4页
分析了红外图像的数据特性,并对红外数据进行稀疏化处理,提出了基于压缩感知理论的红外图像成像方法。在红外图像测量平面使用随机观测矩阵进行观测,以少量的数据采样信息获得重建红外图像的足够信息。由实验和仿真计算可知,压缩感... 分析了红外图像的数据特性,并对红外数据进行稀疏化处理,提出了基于压缩感知理论的红外图像成像方法。在红外图像测量平面使用随机观测矩阵进行观测,以少量的数据采样信息获得重建红外图像的足够信息。由实验和仿真计算可知,压缩感知理论应用于红外成像技术,降低了数据采样量,提高了采样速度,并能以较小的误差实现红外图像的重构。 展开更多
关键词 压缩感知 红外成像 红外直方图 l1magic 稀疏化
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