Design of Chaotic Block Cipher Operation Mode for Intelligent Transportation Systems

Information security is a vital aspect of Intelligent Transportation Systems (ITS) involving public data collection. Road images captured for use as a basis of traffic manipulation in ITS should take all precautions for encrypting the wirelessly transferred image. This paper presents an Enhanced Cipher Block Chaining (ECBC) operation mode to ensure optimal cryptographic properties in a block cipher image encryption scheme. ECBC is based on the Cipher Block Chaining (CBC) operation mode and uses chaos based initialization vectors. Results show ECBC yields better information entropy and correlation coefficients than CBC.