AVR BOOTLOADER • Support many types of AVR microcontrollers. • Support AVR device with multi-uart. • Support RS232/RS485/RS422 mode. -Support AES crypt routine (128/256 bits key) • Support customize communication baud

AES算法主要包括三个方面：轮变化、圈数和密钥扩展。本文以128为例，介绍算法的基本原理；结合AVR汇编语言，实现高级数据加密算法AES。