1. Shift Cipher (Caesar) $$ \begin{array}{c} p \in \mathbb{Z}{26} \ c \in \mathbb{Z}{26} \ k \in \mathbb{Z}{26} \ e{k}(p) = (p + k)\pmod{26} \ d_{k}(c) = (c - k)\pmod{26} \end{array} $$ Monoalphabetic Substitution Cipher ...
1. Shift Cipher (Caesar) $$ \begin{array}{c} p \in \mathbb{Z}{26} \ c \in \mathbb{Z}{26} \ k \in \mathbb{Z}{26} \ e{k}(p) = (p + k)\pmod{26} \ d_{k}(c) = (c - k)\pmod{26} \end{array} $$ Monoalphabetic Substitution Cipher ...