encrypt_and_decrypt

说明：  可视密码实现，生成4个密钥图片，任意两个叠加会生成明文(visual cryptographic implementation, generating four key pictures, any two superposition will generate plaintext)

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: 

用c语言实现的sha1，速度很快，和普通的sha1不同

根据JPEG2000格式的特性，改变在其算术编码时采用的概率状态迁移表可达到加密图像的效果-According to the characteristics of JPEG2000 format change in its arithmetic coding used in the probability of state migration table can achieve the effect of encrypted image

A novel image encryption scheme based on substitution-permutation network and chaos

DES加密的MFC实现,主要包括两部分组成，有字符串加密和文件加密两种模式，实现了3DES功能，让加密更安全(including string and files by DES)

简单的双规加密法和钥控序列加密法 C++实现，可选择(Doubletrack and Keycontrol)

md5的vb源代码

使用cuda的aes加解密kernel函数(the kernel function of aes encrypt)

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