算术运算实现字母的替换。凯撒加密就是一种单字母替换法：通过用户给出密钥将字母加上密码变成密文...

DES写的文件加密软件,可以用于对整个文件进行加密并且设定加密密码来网络传输!-Written by DES file encryption software, can be used to encrypt the whole document and set the encryption password network!

--- -----md5--- --- ---属于200种加密算法的一种------------ md5--------------- encryption algorithm 200 is a

桌面锁定工具。非常简便-lock desktop tools. Very simple

SHA-1Hash函数源码，可以对任何文件做Hash，得到的Hash值为160位。具有抗强碰撞，弱碰撞等能力。虽然王小云已经找到了个别碰撞。但在新的好的hash函数出来之前仍将被广泛使用。-SHA-1Hash function source, any document can be done right hash, the hash value of 160. Anti-collision, the weak capabilities of the collision. Although Bruce Schneier, had found individual collisions. But the new good hash function will be out before widespread use.

shs加密源程序-29-57 encryption source

这个例子描述了MD4碰撞，很有研究价值，大家可以仔细研究下-MD4碰撞

著名的l0pht代码！-famous l0pht code!

B样条曲线生成程序.txt B样条曲线生成程序.txt-B-spline curve generation procedure. TxtB spline curve generation procedure. TxtB spline curve generation procedure. Txt

Win95 PWL文件password加密算法-Win95 PWL file password encryption algorithm