AN3992 Datasheet PDF - STMicroelectronics

Introduction
   This application note describes STM8L162M8 demonstration firmware which reads and writes encrypted data into an LRxk contactless tag. The MCU encrypts data using its embedded AES hardware and sends it to a contactless tag through the CR95HF transceiver.

   The data stored into the contactless tag can be read by anyone but decrypted only by the encryption or decryption key owner.