如何使用c++中的处理器指令实现快速算术运算

I was working on the C++ implementation of Shamir's secret sharing scheme. I split the message into 8-bit chunks and on each performs corresponding arithmetic. The underlying finite field was Rijndael's finite field F_256 / (x^8 + x^4 + x^3 + x + 1).I was working on the C++ implementation of Sham