RSA算法的Java实现，可作为学习公钥体制加密算法的参考资料-Java realization of RSA algorithm can be used as learning the public key encryption algorithm system reference

使用PBE和三重DES加密文件-use of PBE and triple DES encryption document

DES 加密 系统的 C 语言 实现的源代码-DES encryption system of the C language source code

IDEA加密算法属于数据块加密算法(Block Cipher)类。IDEA使用长度为128bit的密钥，数据块大小为64bit。-IDEA encryption algorithm is data block encryption algorithm (Cipher Block) category. IDEA use of the length of the 128 bit key, the data block size for 64bit.

sspi_workbench

 ECC（Elliptic Curves Cryptography）加密算法是一种公钥加密算法，与主流的RSA算法相比，ECC算法可以使用较短的密钥达到相同的安全程度。此文档是160bit的C++源代码.

对椭圆曲线进行了很好的实现，包括 combined_math：onb_integer opt_hash poly_hash poly_integer  fast_onb  integer  onb：DH.example ElGamal.example MQV.simple polymath：basics DH_example ElGamal.example 

简单实现CRC交验程序-simple inspection procedures

Motivation - A simple DES core  - Fast and Small Version  - Open Source Compatibility I believe that the core complies to NIST-800-17. However, there has been no formal third party verification. The official NIST specification can be downloaded here: 800-17.pdf. For the Triple DES, the NIST reference is located here: 

MD5加密单元及DEMO-MD5 encryption modules and DEMO