PERMUTATION

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相关机构：南方医科大学北京城市学院空军军医大学（第四军医大学）上海大学更多>>
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A WATERMARKING ALGORITHM BASED ON PERMUTATION AND 2-D BARCODE被引量：2
《Journal of Electronics(China)》2001年第4期375-381,共7页Ji Zhen Zhang Jihong Xie Weixin (Faculty of Information Engineering, Shenzhen University, Shenzhen 518060) 
This letter presents a method for digital image watermarking for copyright protection. This technique produces a watermarked image that closely retains the quality of the original host image while concurrently survivi...
关键词：DIGITAL WATERMARK PERMUTATION 2-D BARCODE PDF417 
ON DECORRELATED FAST CIPHER
《Journal of Electronics(China)》2000年第1期94-96,共3页Wu Wenling Li Bao Feng Denguo Qing Sihan(Engineering Research Center for Information Security Technology,Chinese Academy of Sciences, Beijing 100080) 
Decorrelated Fast Cipher(DFC) is a candidate for the Advanced Encryption Standard (AES). It is shown that the cryptographic properties of the confusion permutation of DFC are weak in this paper. With the same F-functi...
关键词：ROUND function PERMUTATION DIFFERENTIAL CRYPTANALYSIS NONLINEARITY 
AN IMPROVED DIGITAL-REVERSED PERMUTATION ALGORITHM FOR THE FAST FOURIER ANDHARTLEY TRANSFORMS
《Journal of Electronics(China)》1998年第2期144-149,共6页Liu Bin Xie Ping (Automation Department, Vansnan University, Qinhuangdao 066004) 
A more efficient permutation algorithm which has less computer operation and better structure is presented here for radix-2 FFT(FHT). It can fasten the FFT and FHT efficiently when N becomes large.
关键词：Radix-2 FFT and FHT PERMUTATION ALGORITHM Bit-reversed order Upper-limit 
A NEW METHOD FOR DESIGNING FULL FREQUENCY HOP CODES
《Journal of Electronics(China)》1993年第2期132-138,共7页杨义先 
Supported by National Natural Sciences Foundation of China
Permutation polynomials in finite fields are introduced for the first time into thedesign of full frequency hop codes(FHCs).Various kinds of full FHCs with good auto-and cross-correlation functions are presented in th...
关键词：CODING FREQUENCY HOP CODES PERMUTATION POLYNOMIALS 
ON COSTAS ARRAYS
《Journal of Electronics(China)》1992年第1期17-25,共9页杨义先 
Project supported by the National Natural Science Fund for Youth.
Costas array is a class of radar signal array with perfect correlation property.Anopen problem about the limiting performance of the costas array(i.e.the Golomb-Taylor’s fifthconjecture)is solved in this paper.
关键词：COSTAS ARRAY PERMUTATION MATRIX 
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