SHA1 message digest algorithm, SHA1 message digest algorithm

cryptoboot is set of tools for disk encryption on Unix. It is especially suited to encrypt root partition, so _everything_ (except kernel and cryptoboot inself) is encrypted. -cryptoboot is set of tools for disk encrypt ion on Unix. It is especially suited to encrypt r oot partition. so _everything_ (except kernel and cryptoboot inself) is encrypted.

rc5 and des encryption and decryption

CRC的算法分析和实现-CRC algorithm analysis and the realization

Base64 编解码演示程序 -Base64 codec demo program

/* RSA Demo 1.0 版 * 版权所有 (C) 2004 赵春生 * 2004.04.25 * http://timw.yeah.net * http://timw.126.com * 本程序调用Miracl ver 4.82大数运算库，详见其附带手册。 * P,Q,N,D,E使用RSATool2生成。 */ 编译提示： 一：将Project-Settings-Settings For(All Configuration)-C/C++中Category项的 Precompiled Headers设置成：Automatic use of precompiled headers（图1）。 二：将ms32.lib添加到工程中（图2）。 三：MIRACL是C库。 extern "C" { #include "miracl.h" #include "mirdef.h" } #pragma comment( lib, "ms32.lib" )-/* RSA Demo version 1.0* Copyright (C) 2004 Zhao Chunsheng 2004.04.25*** http://timw.126.com http://timw.yeah.net* The procedures called Miracl ver 4. The majority of computing for 82, as detailed in its fringe manual.* P, Q, N, D, E use RSATool2 generation.*/Compiler Tip : 1 : Project-Settings- Settings For (All Configuration)- C/C Category, of OO Headers set : Automatic use of precompiled headers (Figure 1). 2 : ms32.lib added to the project (Figure 2). 3 : MIRACL C library. Extern "C" (# include "miracl.h"# include "mirdef.h")# pragma

本代码实现了维吉尼亚密码，维吉尼亚密码是基于简单的凯撒密码改进而来的多表替换密码，代码简单，供交流学习使用。

aes加密算法。用delphi语言实现。位数为128。-Aes encryption algorithm. Delphi use language. Median 128.

VHDL implementation of the twofish cipher for 128,192 and 256 bit keys. The implementation is in library-like form All needed components up to, including the round/key schedule circuits are implemented, giving the flexibility to be combined in different architectures (iterative, rolled out/pipelined etc). Manual in English is included with more details about how to use the components and/or how to optimize some of them. All testbenches are provided (tables, variable key/text, ECB/CBC monte carlo) for 128, 192 and 256 bit key sizes, along with their respective vector files.-VHDL implementation of the twofish cipher for 128,192 and 256 bit keys. The implementation is in library-like form All needed components up to, including the round/key schedule circuits are implemented, giving the flexibility to be combined in different architectures (iterative, rolled out/pipelined etc). Manual in English is included with more details about how to use the components and/or how to optimize some

这个是简单的用vb编程编的分解质因数的程序和已经编译了的exe文件-This is a simple program with vb series of the quality factor of the decomposition process and is compiled by the exe files

DES算法全称为Data Encryption Standard,即数据加密算法,DES算法把64位的明文输入块变为64位的密文输出块,它所使用的密钥也是64位。RSA的安全性依赖于大数分解。公钥和私钥都是两个大素数（ 大于 100个十进制位）的函数。本程序为适合初学者的rsa算法java源码及des源码，开发环境eclipse3.4-DES algorithm called the Data Encryption Standard, that is, data encryption algorithm, DES algorithm to express the 64-bit input block into a 64-bit output ciphertext block, it is also used 64-bit key. RSA" s security depends on the decomposition of large numbers. Public key and private key are two large prime numbers (more than 100 decimal places) of the function. This procedure is suitable for beginners of rsa algorithm java source and des-source, development environment eclipse3.4