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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

Windows易用免费MD5验证工具WMD5

用VC编辑的一个MD5算法，很好用可以顺利进行运行-VC editor of an MD5 algorithm is useful for the smooth running

chaos synch very good best article

对JPEG2000图像的小波系数的最高两位平面用随机数进行加密-JPEG2000 images of wavelet coefficients with the highest two-plane random number encrypted

Consecutive AES core Description of project.. Features - AES encoder - 128/192/256 bit - AES decoder - 128/192/256 bit Status - Key Expansion added - Encoder added - Decoder added - Documentation added

文档加密驱动程序源

用来脱被upx加过壳的文件,包括被upxfix等修改过的文件,适用于几乎所有版本(不过特低的好像有些问题:( ) 欢迎指正!msn:phoenix8088@hotmail.com-UPX from being used to shell the documents have been added, including such upxfix revised document, applicable to almost all versions (particularly low, however it seems there are some problems: () please correct me! Msn: phoenix8088@hotmail.com

多数程序设计语言处理整数的能力是有限的，如C语言中，int类型数据范围是-32767----32767。实际问题的处理过程中往往涉及大整数的运算，如RSA加密算法要求至少64bit的整数，本程序是设计算法实现大整数的加减运算。-majority programming language processing is integral to the limited capacity, such as C language, int data type is the scope-32767---- 32767. Practical problems of the treatment process often involves large integer arithmetic, such as the RSA encryption algorithm requires at least 64-bit integers, the procedure is designed algorithm large integer addition and subtraction operations.

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 /