I am currently working in Logisim and was wondering if I can design some ciphers in the same. One such cipher is PRESENT cipher which is essentially a block cipher. I did get that I need to design the S and P boxes for the same but I am having difficulty starting with the same. The issue is that I am not sure which electronic parts I should use to get the desired output. I'd appreciate it if I could get a starting point for the cipher which would then make things a bit more clearer to me. Thanks!