STM32F103单片机，读写SST flash的用户加密区，用sst flash的出厂id和MD5加密算法来加密芯片,程序主要包括MD5加密码算法和sst flash完整驱动-STM32F103 microcontroller, user encryption district literacy SST flash, with the sst flash factory id and MD5 encryption algorithm to encrypt the chip, the progr