L4D2Center anticheat hash list

By /robex/, May 2025. Back to Articles and Guides

Introduction

In this page you can find a list of hashes of all new builds of the L4D2Center client-sided anticheat (AC from now on), to help independently verify their authenticity. I have been given access to the AC source code by sheo, even though I have nothing to do with L4D2Center or the anticheat itself, aside from checking that it does not do anything malicious.

For more information, please check out my previous post on the AC.

Verifying the hash

In order to verify that the hash of the file downloaded from the L4D2Center website matches the one on this table, follow these instructions (make sure Windows Defender is not messing with the file):

Windows

1. Open powershell on the folder where the AC is located (shift + right click > Open PowerShell window here)
2. Type the following command: get-filehash l4d2c_anticheat.exe
3. Check that the output hash matches the one in this table (checking the first and last few characters should be good enough)

Windows (alternative)

If you have 7zip installed, you can right click the executable and then click "7-Zip > CRC SHA > SHA-256"

Linux

1. Open a terminal on the folder where the AC is located
2. Type the following command: sha256sum l4d2c_anticheat
3. Check that the output hash matches the one in this table (checking the first and last few characters should be good enough)

Online hash calculator

Finding the version number

To find out the version of the AC, right click the executable, go to Properties > Details and look at the "Product version" field, it should be something of the form of v[number].

Hash table

The hashes in the following table have been obtained by manually compiling the reviewed source code, and they should match the versions on the official download page. If the latest version is not listed here, it means that I have not yet had the time to review the source code changes and update the hashes.

If the hash of the file you downloaded does not match for the same version and OS, you should be wary, as it means that the executable has been tampered with in some way.