这是密码学软件源码,一个小程序的源码,caser密码

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

由于BT老师的要求，非要将64位DES算法改编成16位的DES算法，小生在这里献丑了。-as teachers, add to the 64-bit DES algorithm adapted into 16 of the DES algorithm, Niche in a shortcoming here.

sha-1算法是目前常用的数字摘要算法，可以为任意长度的数据生成20字节的数字摘要，是数字签名的基础-sha-1 algorithm is commonly used in digital digest algorithm, for arbitrary length of 20 bytes of data generation digital summary is the basis of digital signatures

RSA的小程序，源码产生随机素数调用方法：N.GetPrime(bits)返回值：N被赋值为一个bits位（0x100000000进制长度）的素数-RSA small program source random-number call methods : N. GetPrime (bits) Returns : N has been assigned a bits- (0x100000000 band length) of prime numbers

含有常用的一些加密标准算法实现- Includes the commonly used some encryption standard algorithms to realize

加密算法tea加密文件，用vc语言编写，支持多种格式-encrpyt file by tea arithmetic,support some kinds of file format,VC Code

Ｃ的原代码，可以参考的．用一定的下在价值-the original C code can reference. With a certain value in the next

利用汇编语言实现DES加密算法-using assembly language to achieve DES encryption algorithm

个人编的rsa的源代码，算出public―private key；其中有Euclid，Extend Euclid的实现，以及Millar-Rabin test的实现，和加密/解密-Rsa personal series of source code, calculate the public-private key including Euclid, Extend Euclid realization, as well as the Millar-Rabin test realization, and the encryption/decryption

VC实现的图像加密算法，采用Arnold变换，对于初涉信息安全的人员有一定参考价值-The algorithm of encrypted image completed in VC, applying the Arnold transform .It is valuable to people who will devote himself to infomation security