DES.C: DES Algorithm Program from the Book Appliced Cryptography, Bruce Schneier
标签: Cryptography DES Algorithm Appliced
上传时间: 2016-07-01
上传用户:helmos
fast implementation of Kmeans clustering algorithm
标签: implementation clustering algorithm Kmeans
上传时间: 2014-01-17
上传用户:爱死爱死
遗传算法(Genetic Algorithm,GA)是一种抽象于生物进化过程的基于自然选择和生物遗传机制的优化技术. 遗传算法的基本原理 在遗传算法的执行过程中,每一代有许多不同的种群个体(染色体 )同时存在。这些染色体中哪个保留(生存)、哪个淘汰(死亡),是根据 它们对环境的适应能力来决定的,适应性强的有更多的机会保留下来 。适应性强弱是通过计算适应性函数f(x)的值来判别的,这个值称为适应值。适应值函数f(x)的构成与目标函数有密切关系,往往是目标函数的变种。
上传时间: 2016-07-05
上传用户:lizhizheng88
An optimal neuron evolution algorithm for the restoration of linearly distorted images is presented in this paper. The proposed algorithm is motivated by the symmetric positive-definite quadratic programming structure inherent in restoration. Theoretical analysis and experimental results show that the algorithm not only significantly increases the convergence rate of processing, hut also produces good restoration results. In addition, the algorithm provides a genuine parallel processing structure which ensures computationally feasible spatial domain image restoration
标签: restoration evolution algorithm distorted
上传时间: 2013-12-21
上传用户:yy541071797
基于最小二乘原理的曲线拟合程序-A program of curve fitting based on least squares algorithm.
标签: algorithm program fitting squares
上传时间: 2016-07-07
上传用户:VRMMO
An Efficient and Effective Detailed Placement Algorithm Global Swap To identify a pair of cells that can be swapped to reduce wirelength (others are fixed). 2. Vertical Swap Swap a cell with a nearby cell in the segment above or below. 3. Local Re-ordering Re-order consecutive cells locally to reduce wirelength. 4. Single-Segment Clustering Place cells optimally within a segment.
标签: Algorithm Efficient Effective Placement
上传时间: 2013-12-18
上传用户:ukuk
A Detect Motion Algorithm with Efficiency Priority for Embedded Systems
标签: Efficiency Algorithm Embedded Priority
上传时间: 2016-07-11
上传用户:zhichenglu
This is the source code for encryption using the latest AES algorithm. AES algorithm is also called Rijndael algorithm. AES algorithm is recommended for non-classified use by the National Institute of Standards and Technology(NIST), USA. Now-a-days AES is being used for almost all encryption applications all around the world.
标签: algorithm encryption AES the
上传时间: 2014-01-18
上传用户:xc216
Digital Signature Algorithm (DSA)是Schnorr和ElGamal签名算法的变种,被美国NIST作为DSS(DigitalSignature Standard)。算法中应用了下述参数: p:L bits长的素数。L是64的倍数,范围是512到1024; q:p - 1的160bits的素因子; g:g = h^((p-1)/q) mod p,h满足h < p - 1, h^((p-1)/q) mod p > 1; x:x < q,x为私钥 ; y:y = g^x mod p ,( p, q, g, y )为公钥; H( x ):One-Way Hash函数。DSS中选用SHA( Secure Hash Algorithm )。 p, q, g可由一组用户共享,但在实际应用中,使用公共模数可能会带来一定的威胁。签名及验证协议如下: 1. P产生随机数k,k < q; 2. P计算 r = ( g^k mod p ) mod q s = ( k^(-1) (H(m) + xr)) mod q 签名结果是( m, r, s )。 3. 验证时计算 w = s^(-1)mod q u1 = ( H( m ) * w ) mod q u2 = ( r * w ) mod q v = (( g^u1 * y^u2 ) mod p ) mod q 若v = r,则认为签名有效。 DSA是基于整数有限域离散对数难题的,其安全性与RSA相比差不多。DSA的一个重要特点是两个素数公开,这样,当使用别人的p和q时,即使不知道私钥,你也能确认它们是否是随机产生的,还是作了手脚。RSA算法却作不到。
标签: Algorithm Signature Digital Schnorr
上传时间: 2014-01-01
上传用户:qq521
基于AR模型的间谐波检测算法的研究Based on the model of inter-AR harmonic detection algorithm research
标签: detection algorithm inter-AR harmonic
上传时间: 2016-07-16
上传用户:silenthink