凯撒密码

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

古典加密算法,非常实用，有需要的可以下载，不需权限-this code is very good

java写的椭圆曲线加密(ECC)算法源码-java writes the elliptic curve encryption (ECC) calculates the law origin code

IDEA加密算法(PGP中使用的加密算法）-IDEA Encryption Algorithm (using PGP encryption algorithm)

实现通信过程中的数据加密（AES, DES, SHA-256,SHA-384,SHA512, RSA）。 测试加解密效率等-To achieve communication in the process of data encryption (AES, DES, SHA-256, SHA-384, SHA512, RSA). Encryption and decryption efficiency test

为一个字节或字符数组或串计算md5值，内部只创建一个数组，节省分配时间，节省内存 完全是static方法，线程安全 注意对返回值的处理，见注释-for a byte array or character string or md5 value calculation, only to create an internal array, saving time allocated to save memory is completely static method, thread-safe attention to the return value, see note

MD5算法封装类-MD5 algorithm Packaging Category

java写的base64加解码算法-Base64 code/decode algorithm written in Java

Des加密的实现-Des achieve encryption

RSA实现数字签名算法 VC++实现，有图形化窗口-Digital Signature Algorithm to RSA