Final-Report

用matlab实现的图像加密算法-基于Arnold变换的图像加密(using Matlab achieve image encryption algorithm-based Arnold Transform Image Encryption)

Mình đang gặp khó khăn phần tạo 关键 cho giải thuật mã hóa sử dụng DES。 胡志明芹源代码 C、 bạn nào có 旺角 cho mình tham khảo。 Làm ơn gửi vào địa chỉ 秀 giúp mình: vuquangbk0612@gmail.com

rsa encryption which ask a user input must me be uppercase letter-rsa encryption which ask a user input must me be uppercase letter..

ECC加密与解密的实现，并且能够优化椭圆曲线乘法的程序(Implementation of ECC Encryption and Decryption)

将其他文件隐藏在BMP图像中！好-other documents hidden in BMP image! Good

凯撒和维吉尼亚加密方法，两种算法都不是很复杂，基本原理也相似所以都写入一个文件中来表示。-Caesar and Virginia encryption method, two algorithms are not very complicated, so the basic principles are also similar to a document written to express.

密码学算法-小型证书机构CA系统的认证系统-cryptography algorithm-small agencies CA certificate of authentication system

说明：  dsa数字签名 系统功能需求： 1.对文件进行签名，生成一个独立于原文的签名文件； 2.可以对文件进行签名，在文件后追加签名信息； 3.具有密钥管理的功能，比如密钥的生成、导入、导出； 4.可以对word文档实施操作，对word文档的内容进行签名； 5.能够比对已经实施的签名，防止进行重复的签名，以防止重放攻击； 6.可以对已经签名的文件进行单独的源文件和签名信息的分离操作。(DSA digital signature System functional requirements: 1. Sign the document and generate a signature file independent of the original text. 2. The document can be signed and the signature information can be added after the document. 3. It has the function of key management, such as key generation, import and export. 4. Word documents can be operated and the contents of Word documents can be signed. 5. Ability to compare existing signatures and prevent duplicate signatures to prevent replay attacks; 6. It is possible to separate the source file from the signature information of the signed file.)

可以保护你的网站源码不被别人看到!-can protect your website source not to be seen by others!

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.)