computer security,an introduction to computer security,you can learn much from i...

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.

一个简单的文件加密器-a simple file encryption device

大数计算器，有加减乘乘方求余求逆 可用于密码学的课程设计。-Large Number Calculator, there are more than addition and subtraction by inverse involution for cryptography can be used for curriculum design.

分组密码算法,可用于文件加密 该算法设计者是著名的华人密码学家来学嘉教授-Block cipher algorithm, can be used for file encryption algorithm designed by the famous Chinese cryptographer to Xuejia Professor

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古典密码算法中的单表代换密码算法、移位密码算法、Vigenere密码算法。算法比较简单，用命令的方式。可以随机生成明文和密钥。-Classical cryptographic algorithm in a single table substitution cipher, transposition cipher, Vigenere cipher. Algorithm is relatively simple, way to use the command. Can be randomly generated and the key explicitly.

NTL 是一种高性能、 可移植 c + + 库提供的数据结构和算法对于任意长度的整数 ；为向量、 矩阵和在整数范围内和利用有限域上的多项式和任意精度浮点运算。

DES加密代码，是研究密码加密的基础，希望大家能有所收获-DES encryption code, password encryption is to examine the basis for hope that we can gain

在各种安全机制中；

loki加密算法-loki encryption algorithm