🔐(🅰️✖️➕🅱️)％

#affine cipher #substitution cipher #modulo arithmetic #ax+b

🔢≡🔢

#number theory #modulo arithmetic #modular #remainder #equivalence relation #congruence relation #congruent symbol

🔢🔑🅿️

#Rader FFT #primitive root #modulo arithmetic #prime modulus #DFT Algorithm