Classic example
prime = 23generator = 5privateA = 6privateB = 15
Result: Both compute shared secret = 2.
Diffie-Hellman Visual
EDUCATIONAL DEMONSTRATION - See how Alice and Bob establish a shared secret over an insecure channel using public-private key pairs. Uses small numbers for clarity.
Privacy: this tool processes your data entirely in your browser. Nothing you paste or type is sent to the server.
Enter your values and press Calculate — the result appears here.
Worked examples
Frequently asked questions
How does DH prevent eavesdropping?
An eavesdropper sees g^a mod p and g^b mod p but cannot compute g^(ab) mod p without solving the discrete logarithm problem.
Why is this "educational only"?
Real-world DH uses 2048+ bit primes. Small numbers can be factored instantly. Also, vanilla DH is vulnerable to man-in-the-middle attacks without authentication.
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