“…Firstly, we combined the internal blocks of the original F8 and F9 functions to reduce the required area for hardware implementation [4,5]. The adopted technique is based on the reuse of common blocks for original functions [6,7], principally KASUMI algorithm [8][9][10]. Secondly, we simplified the implementation of the internal functions (FL, FO, and FI) of the KASUMI block cipher (the core of standard F8 and F9 functions) to increase the encryption throughput.…”