https://github.com/lorenzleutgeb/ecdh-aes-chat

Proof of concept chat program using ECDH handshake and AES encrypted messages
https://github.com/lorenzleutgeb/ecdh-aes-chat

Last synced: 26 days ago
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Proof of concept chat program using ECDH handshake and AES encrypted messages

• Host: GitHub
• URL: https://github.com/lorenzleutgeb/ecdh-aes-chat
• Owner: lorenzleutgeb
• Created: 2013-02-07T16:24:29.000Z (over 11 years ago)
• Default Branch: master
• Last Pushed: 2016-02-05T16:18:19.000Z (almost 9 years ago)
• Last Synced: 2023-04-02T13:16:02.879Z (over 1 year ago)
• Language: C#
• Homepage:
• Size: 68.4 KB
• Stars: 4
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
This is a proof of concept of a small chat application that encrypts messages with AES alias Rijndael (currently only with a fixed block size of 128bit) after negotiating a symmetric key with ECDH (arbitrary curve). Right now messages are encrypted in ECB mode because I was too lazy to implement CBC.

The tools [here](http://people.eku.edu/styere/Encrypt/JS-AES.html) and [there](http://www-cs-students.stanford.edu/~tjw/jsbn/ecdh.html) helped me a lot, I stole major parts of the ECDH stuff from Tom Wu and used Eugene Styer's AES example to debug my code. Thank you!

As this was an assignment for school I was not allowed to use any .NET crypto magic from `System.Security.Cryptography` besides the RNG.