Back to ProjectsDiffie-Hellman Key Exchange
Implementation of the Diffie-Hellman key exchange protocol for secure key establishment.
Overview
Lab 6 introduces public-key cryptography through the implementation of the Diffie-Hellman key exchange protocol. This foundational protocol enables two parties to establish a shared secret over an insecure channel without prior communication. The project implements modular exponentiation, explores the discrete logarithm problem that provides security, and demonstrates man-in-the-middle attack vulnerabilities and their mitigations.
Technologies Used
Key Features
Complete Diffie-Hellman key exchange implementation
Efficient modular exponentiation (square-and-multiply)
Prime number generation and validation
Primitive root verification
Man-in-the-middle attack demonstration
Parameter selection and security analysis
Showing 6 of 8 features
Challenges
Implementing efficient modular exponentiation for large numbers, selecting secure parameters (prime and generator), understanding the discrete logarithm problem, demonstrating MITM vulnerabilities clearly.
Outcome & Impact
Successfully implemented secure key exchange protocol, demonstrated protocol security based on discrete logarithm hardness, identified and explained MITM vulnerabilities and authentication requirements.
How I Grew
Mastered public-key cryptography fundamentals
Learned the discrete logarithm problem and its cryptographic applications
Understood modular arithmetic and efficient exponentiation algorithms
Gained insights into man-in-the-middle attacks and authentication needs
Developed skills in selecting secure cryptographic parameters
Learned the importance of authenticated key exchange protocols