How to implement rc4 encryption on udp socket

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The project consists of three tasks:

T1. Implementation of the cryptographic algorithm RC4.

T2. Implementation of a communication protocol with no algorithm created in T1.
<pre>- Secure Communication Protocol

The objective is to make use of the RC4 algorithm interface developed in task T1 to

What I have tried:

I want to make this problem in C #

Posted 1-Feb-17 9:15am

Member 11359382

Updated 1-Feb-17 21:46pm

Sean Ewington

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[no name] 1-Feb-17 16:20pm

"I want to make this problem in C #", okay go right ahead and do that. Good luck.

Dave Kreskowiak 1-Feb-17 16:37pm

Considering UDP does NOT guarantee the delivery of packets, not even the order in which they arrive!, I find the concept of encrypted data over an unreliable socket a rather ridiculous idea.

If you have a block of data that spans multiple packets and a problem occurs with one or more of the packets, you're not going to be able to decrypt the data at all.

Oh! And RC4 is considered broken because of multiple vulnerabilities in it.

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CPallini · Answer 1 · 2017-02-01T21:46:00

If you have to implement yourself the algorithm then have a look at its own Wikipedia page: RC4 - Wikipedia[^]. You may also use Google to find out some existing C# implementations[^].
Once you're sure your encryption/decryption routines work, then you may use the UdpClient[^] class (or directly the Socket[^] class, if required so) to implement the communication part.