Paper
1949
Communication Theory of Secrecy Systems
Claude Shannon
Puts cryptography on a mathematical footing and proves the one-time pad is the only perfectly secret cipher.
Read itBefore you start
- Assumes
- probability, and ideally Shannon's information paper first — this one leans on it throughout
FreeAdvancedlink checked 17 Sept 2026
Read these first
Not a difficulty warning — a route. These are in the library too.
Filed under Security & Cryptography in Computer Science.