This HashCloak tutorial introduces formal verification using Lean, targeting cryptographic engineers who want to learn how to write machine-checked proofs. It covers Lean fundamentals and demonstrates how to formally verify the One-Time Pad protocol using definitions from Boneh and Shoup’s applied cryptography textbook. The piece is positioned as an accessible entry point rather than a production best-practices guide.
Background
Formal verification tools like Lean, Coq, and Isabelle are widely used to mathematically prove the correctness of cryptographic protocols and safety-critical software. Lean, originally created at Microsoft Research, has seen rapid growth in both academic theorem proving and industrial verified programming.
- Source
- Lobsters
- Published
- Jul 20, 2026 at 01:35 AM
- Score
- 5.0 / 10