This repository is dedicated to exploring the BB84 Quantum Key Distribution (QKD) Protocol, the first-ever QKD protocol, published in 1984 by Charles H. Bennett and Gilles Brassard. BB84 is a revolutionary method for securely communicating a private key using quantum mechanics principles.
The repository includes:
- A detailed PDF explaining the BB84 protocol and its associated concepts.
- Code implementation of the BB84 protocol, including potential eavesdropper scenarios.
This document provides:
- A brief introduction to quantum cryptography.
- Insights into private key methods and basic cryptographic techniques (e.g., Caesar cipher).
- A detailed explanation of BB84 and E91 protocols.
- A step-by-step breakdown of the BB84 protocol, along with explanations of Eve's potential eavesdropping attacks.
The implementation details are provided in the linked notebook, which covers:
- Simulation of the BB84 protocol.
- Eve's attack simulations (
interceptAndSendandentangleQubitfunctions). - A quantum entanglement approach to enhance security.
-
Quantum Principles:
- Relies on Heisenberg's Uncertainty Principle.
- Any attempt to gain information disrupts the quantum state.
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Security Conditions:
- Non-orthogonal quantum states ensure information gain is detectable.
- An authenticated classical communication channel is required.
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Eavesdropping Scenarios:
interceptAndSend(circuit): Simulates qubit interception and re-encoding.entangleQubit(circuit): Models qubit entanglement by an eavesdropper.
- Documentation: Read the full explanation in the
QKD BB84 PROTOCOLS.pdf. - Code Notebook: BB84-Quantum-Key-Distribution.
- Clone the repository:
git clone https://github.com/Risav25Pokhrel/BB84-Quantum-Key-Distribution.git
- Open the
QKD BB84 PROTOCOLS.pdffor theoretical understanding. - Run the code in the provided notebook to simulate the BB84 protocol and analyze its security.
Maintained by
Risav Pokhrel