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

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

RSA公钥加密，用C实现，大家可以参考一下-RSA public key encryption, using C to achieve, we can refer to

cccam_2.3.0 所有的文件 包括配置文件示范　dm800 dm500 和PC平台

设f(x)=1+x+x2+x5+x27，试分别写出实现下列移位寄存器的程序： 以f(x)为联接多项式的DSR； 以f(x)为联接多项式的LFSR。 可供选择的联接多项式： f1(x)=1+x+x4+x6+x30； f2(x)=1+ x3+ x31； f3(x)=1+ x6+ x31； f4(x)=1+ x7+ x31； f5(x)=1+ x13+ x31； -Let f (x) = 1 x x2 x5 x27, respectively try to write the following Shift Register : f (x) connected to the DSR polynomial; f (x) for connectivity polynomial LFSR. Connection options polynomial : f (x) = 1 x x4 x6 x30; F2 (x) = 1 x3 x31; f3 (x) = 1 x6 x31; f4 (x) = 1 x11 x31; f5 (x) = 1 x13 x31;

借助MIRACL大数运算库实现对共享软件的安全注册。-With large numbers MIRACL library to achieve the shared computing software security register.

DEC算法的实现，很特别-DEC algorithm to achieve something special

Delphi加密控件源码，包括对称钥匙加密控件和散列函数控件 -Delphi encryption controls the source code, controls including the symmetrical key encryption and disperses the row letter numerical control

MD5算法的ASP实现． 它在MD4的基础上增加了"安全-带子"（Safety-Belts）的概念。虽然MD5比MD4稍微慢一些，但却更为安全。MD5也为一种非常优秀的中间技术。-MD5 algorithm ASP. It MD4 increase on the basis of "safety-belt" (Safety-Belts) concept. Although MD5 than MD4 slightly slower, but more secure. MD5 also as a very good intermediate technology.

the code can be used to encrypt your folder.