Design and implementation of an integrated system with secure encrypted data transmission

Abstract

The aim of this work is to describe the developed system which provides broad integration and better protection against a sabotage than commonly used systems. The communication bus which is used for message transmission is named Controller Area Network. The security of the CAN bus communication is ensured by the implementation of 3DES encryption method with regular changing of the cipher key. One of the main parts describes a designed database, a method of key assignment, a data encryption, a method of device addressing and a collision protection. Finally, the protocol testing is depicted.