Abstract: Orthogonal frequency division multiplexing passive optical network (OFDM-PON) has superior anti-dispersion property to operate in the C-band of fiber for increased optical power budget.

Abstract: This letter proposes three novel substitution box (S-box) architectures for lightweight block ciphers. The proposed S-box architectures are based on the Boolean decomposition to achieve the ...

The SG-41 cipher machine used a code that was more advanced than Enigma (Picture: E.Antal/Cryptologia/Cover Media) Lost Nazi cipher manuals relating to a code believed to be more advanced than the ...