Project Sherlock

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 it

Before 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.