Tag Archives: Sign

Signing Unreal Pak files

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I was looking for information on signing Unreal’s Pak files and couldn’t find a concise description of the steps required and information needed. Now that I have it solved, I’m making it available here.

For reference we are on version 4.17 of Unreal.

Background

Epic uses 128 bit RSA keys for signing their Pak files and 128 bit AES for encryption. The keys are added to the *Encryption.ini files for your project (like DefaultEncryption.ini) found in your <project>/Config directory.

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Applying PFX Certificates for Signing Internal .NET Applications

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Motivation

We distribute several tools internally that we want to ensure are code-signed (particularly ClickOnce applications).

The goals were:

  1. Anyone on the team could build and publish the tools (including ClickOnce tools).
  2. No team member has to go through manual steps: they should be able to sync and build.
  3. No UI popups during the build (such as passwords).
  4. No trust issues when using the tools–Certificates are trusted.
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