Introduction to Quantum Cryptography


1. A very brief history of secrecy

Heidelberg, April 2013

The handwritten notes are half-baked and may contain errors. Please let me know if you find one.

  • Lecture 1 History of cryptography, key distribution problem, possible solutions
  • Lecture 2 Modular arithmetic, Euclid's algorithm, Euler's theorem, RSA, quantum factoring.
  • Lecture 3 Distinguishability of non-orthogonal states, entanglement, quantum key distribution
  • Lecture 4 Statistical distance, security defined, predictability, privacy amplification
  • Lecture 5 Post-quantum cryptography, device independence, practicalities


Supplementary Material