Micro Rotor Enhanced Block Cipher Designed For Eight Bits Micro-Controllers (MREBC)

The sensor network is a wireless network environment that consists of the many sensors of lightweight and low-power. Authentication between nodes is very vital for network reliability and the integrity of information collected by these nodes. Therefore, encryption algorithm for the implementation of reliable sensor network environments is required to the applicable sensor network. This article gives a new proposed cryptosystem (MREBC) that is designed for 8 bits microcontroller systems. MREBC uses the concept of rotor enhanced block cipher which was initially proposed by the author in NRSC 2002 on the first version of REBC. MREBC uses rotors to achieve two basic cryptographic operations; permutation, and substitution. MREBC cipher gives excellent results from security characteristics and statistical point of view of communication efficiency of MREBC is compared with AES system through measuring performance by plaintext size, and cost of operation per hop according to the network scale. Arduino microcontroller board is used to implement both MREBC, and AES in order to compare the performance of algorithms.