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-Arithmetic operations to achieve the replacement of letters. Caesar encryption is the replacement of a single-letter law: the user is given the letter key will be encrypted into a ciphertext
CRC码产生器与校验器程序
Features :
Executes in one clock cycle per data word
Any polynomial from 4 to 32 bits
Any data width from 1 to 256 bits
Any initialization value
Synchronous or asynchronous reset-CRC code generator and calibration program Features: Executes in one clock cycle per data word Any polynomial from 4 to 32 bits Any data width from 1 to 256 bits Any initialization value Synchronous or asynchronous reset