sjl0808-jnky-hsm-handbook

为了提高图像加密算法的鲁棒性，提出了一种新的自适应图像加密算法。首先，把任意大小的灰度或彩 色图像分成2 × 2 子块 然后，用左上角子块的像素灰度值和Chebyshev 混沌映射构造与右上角子块等大的矩阵，用该 矩阵对右上角子块进行像素灰度值替换 最后，按顺时针对每个子块进行加密，直到左上角子块加密完毕。该算法不 依赖于图像的大小，而且适用于灰度图像和彩色图像，因而有很强的鲁棒性。同时灰度值扩散机制的引入使得该算 法具有良好的扩散性和扰乱性。(This paper presented a new self-adaptive image encryption algorithm so as to improve its robustness． Under this algorithm， a gray image or color image was divided into 2 × 2 size blocks． A corresponding size of matrix in the top right corner was created by the pixel gray-scale value of the top left corner under Chebyshev mapping． The gray-scale value of the top right corner block was then replaced by the matrix created before． The remaining blocks were encrypted in the same manner in clockwise until the top left corner block was finally encrypted． This algorithm is not restricted to the size of image and it is suitable to gray images and color images， which leads to better robustness． Meanwhile， the introduction of gray-scale value diffusion system equips this algorithm with powerful function of diffusion and disturbance．)

用C/C++实现加解密算法及其应用：AES 和基于AES 的CMAC(Encryption and decryption algorithm and its application with C/C++: AES and CMAC based on AES)

软件有限次加密，对软件的使用次数进行限制-finite encryption software, software usage restrictions

Base64 加密算法（Author 蒋柏良 Jerry Jiang)-* * DESCRIPTION * Base64 processes input in 24bit chunks by converting each chunk into 4 * bytes of output. It does so by splitting input into four 6bit groups and * using these as indexes in the following substitution table- * const char base64_map[] = * "ABCDEFGHIJKLMNOPQRSTUVWXYZ" * "abcdefghijklmnopqrstuvwxyz" * "0123456789+/" * If an input is not a multiple of 3 bytes, it s padded with zeros. In * this case the output bytes that consist entirely of the pad data are * replaced with = . * * Example * An input of 0x00 0x45 0xF2 is equivalent to 00000000 01000101 11110010 * bit sequence, which s then split into 000000 000100 010111 110010 * and these are substituted to produce the following base64 encoding * A E X y * * RETURN VALUE * b64_length() should return output length for the input of len bytes. * b64_encode() should encode len bytes from src int

md5通用加密算法，采用C编写，也可以在C++下使用-General md5 encryption algorithm, using C to prepare, you can also use C++

1、文本加密 使用简单的XOR技术加密，不过是很容易破解的 2、获取C盘序列号变成注册码（压缩文件里面附上算号器） 3、通过百度搜索 4、多语言支持 5、文字字体、颜色选择 6、关联文件，关联*.UOD（此项有BUG，欢迎高人指出）(one, the text encryption using simple XOR encryption technology, but is very easy to decipher 2, C disk access sequences, into Serial Number (compressed file attached Suanhaoqi) 3, 4 through Baidu search, five more language support, text font, color selection 6, related documents associated*. UOD (this is BUG. welcome an expert noted))

pgpencrypt.rar

对RC4加密解密代码，可以自行修改密钥!类可以直接调用(RC4 encryption and decryption code, you can modify the key! Class can be called directly)

大素数生成算法的实现，很不错的一段程序-large prime number generation algorithm to achieve a very good procedures

尹学渊版的DES第二版，注释写得非常清楚，并且执行效率不错，代码质量相比第一版有很大的改进，尹学渊保留所有权利，转载自：http://www.cnblogs.com/erwin/-The second edition of YinXueyuan s DES code,the Notes is very clear, and good performance, code quality compared to a significant improvement over the first edition, All rights reserved.YinXueyuan, reprinted from: http://www.cnblogs.com/ erwin /