How to verify data integrity between client-server connection?

StackOverflow https://stackoverflow.com/questions/10746495

  •  10-06-2021
  •  | 
  •  

Question

I recently developed an online multiplayer game and it's working fine. There's a central server handling TCP connections with clients, and they both receive and send data.
Is there a way to verify that the data sent hasn't been modified before the receiver reads it?
Does a TCP connection handle it in some way? If not what is the best way (not asking for code) to implement it?
By now I came up with those ideas:

  • Modify the data sent adding some sort of verify-value, such the packet length.
  • When a packet is received, ask the server to send it again and verify if they are equal.

I searched for a common used solution but couldn't find much.
Encryption should be my last option.

Edit
For a simple way to achieve this:

  1. MD5
  2. SHA1
  3. SSL
Was it helpful?

Solution

Agreed with Bart, you may want to look at using a Hash method for data verification.

Licensed under: CC-BY-SA with attribution
Not affiliated with StackOverflow
scroll top