Cipher Suite
The secret is in the key, not the algorithm.
— Kerckhoffs’ Principle
— Kerckhoffs’ Principle
Caesar
Substitution · Shift
Playfair
Substitution · 5×5
Vigenère
Substitution · Polyalph
Vernam
One-Time Pad · XOR
Rail Fence
Transposition · Zigzag
Row Trans.
Transposition · Columnar
☢ Cryptanalysis
Brute-Force