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DCT_SVD1

于 2014-03-20 发布 文件大小:41KB
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下载积分: 1 下载次数: 2

代码说明:

  通过MATLAB的编程,实现对图片的加密,奇异值的分解,离散变化,程序简单,明了。(Through MATLAB programming, realize the image encryption, singular value decomposition and discrete changes, procedure is simple, clear.)

文件列表:

DCT_SVD1
........\arnold.m,505,2009-11-27
........\check_arnold.m,256,2009-11-27

........\main.asv,3802,2013-11-03
........\main.m,998,2014-03-20
........\psnr.m,626,2010-03-28



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  • jiamijiemi
    说明:  vb 加密解密程序 动态加密使用非常方便...(vb encryption and decryption process is very convenient to use dynamic encryption ...)
    2009-08-03 23:06:04下载
    积分:1
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    SHA-256源代码,三个对外的函数:void SHA256Init (SHA256Context *sc) void SHA256Update (SHA256Context *sc, const void *data, uint32_t len) void SHA256Final (SHA256Context *sc, uint8_t hash[SHA256_HASH_SIZE]) 第一个函数初始化,第二个函数输入要hash的字符串,第三个函数输出结果(SHA-256 source code, three external function: void SHA256Init (SHA256Context* sc) void SHA256Update (SHA256Context* sc, const void* data, uint32_t len) void SHA256Final (SHA256Context* sc, uint8_t hash [SHA256_HASH_SIZE]) The first function is initialized, the second hash function, enter the string, the third function of output)
    2021-04-27 09:28:44下载
    积分:1
  • jiajiemi
    加解密算法的实现,内部包含有多个加解密算法的实现,(Encryption and decryption algorithm, contains a number of internal encryption algorithm,)
    2009-06-14 15:09:55下载
    积分:1
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    2007-09-18 11:24:04下载
    积分:1
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    2010-06-11 07:37:12下载
    积分:1
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    通过C语言实现的AES CMAC加密和解密算法。上传文件为完整的VC6工程目录。AES加密算法即密码学中的高级加密标准(Advanced Encryption Standard,AES),又称Rijndael加密法,是美国联邦政府采用的一种区块加密标准。这个标准用来替代原先的DES,已经被多方分析且广为全世界所使用。经过五年的甄选流程,高级加密标准由美国国家标准与技术研究院 (NIST)于2001年11月26日发布于FIPS PUB 197,并在2002年5月26日成为有效的标准。AES 算法基于排列和置换运算。排列是对数据重新进行安排,置换是将一个数据单元替换为另一个。AES 使用几种不同的方法来执行排列和置换运算。 AES 是一个迭代的、对称密钥分组的密码,它可以使用128、192 和 256 位密钥,并且用 128 位(16字节)分组加密和解密数据。与公共密钥密码使用密钥对不同,对称密钥密码使用相同的密钥加密和解密数据。通过分组密码返回的加密数据的位数与输入数据相同。迭代加密使用一个循环结构,在该循环中重复置换和替换输入数据。(AES CMAC encryption and decryption algorithm C language. VC6 upload files to complete the project directory . AES encryption algorithm that is Cryptography Advanced Encryption Standard (Advanced Encryption Standard, AES), also known as Rijndael encryption method, a block encryption standard adopted by the U.S. federal government . This standard is used to replace the original DES, has been widely analyzed and multi used around the world . After five years of the selection process , the Advanced Encryption Standard by the American National Institute of Standards and Technology (NIST) on November 26, 2001 Posted in FIPS PUB 197, and May 26, 2002 became effective standards . AES algorithm based on permutation and substitution operations. Data re- arrangement is arranged , is replaced with a replacement unit of data to another . AES using several different methods to perform alignment and replacement operations. AES is an iterative , symmetric key block password , it can use 128, 192, and )
    2021-03-11 19:09:25下载
    积分:1
  • Hash_sha256
    sha256计算代码,非常好用的代码,大家可以用这个代码直接计算哈希值,sha256实现 依次执行 SHA256Init、 SHA256Update SHA256Final 三个函数即可得到sha256结果(sha256 sourse code,Is very usefull)
    2013-09-19 16:09:12下载
    积分:1
  • AES-encryption_decryption
    说明:  用于数字、密码等字符的加密和解密,用于数字、密码等字符的加密和解密,用于数字、密码等字符的加密和解密,用于数字、密码等字符的加密和解密(For numbers, passwords, encryption and decryption of characters for numbers, passwords, encryption and decryption of characters for numbers, passwords, encryption and decryption of characters for numbers, passwords, encryption and decryption of characters)
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    2009-09-18 09:02:34下载
    积分:1
  • SFZ
    身份证15位转18位的算法原码,可以自动将转换后的结果放入剪贴板中(Algorithm of the original code ID card 15 turn 18, you can automatically converted into the clipboard)
    2012-08-22 12:17:21下载
    积分:1
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