Question about how to obtain decryption key for UE4 title.

[L33THAK0R]

Hi all,

Was looking into repacking/compressing Unreal Engine 4 titles (specifically Chernobylite), however it would seem that a decryption key is required to properly pack and unpack the archives. I'm not very sure as to where to find an index of decryption keys or how to properly extract/find the key for the title.

Another question I have is do all Unreal Engine 4 titles have encrypted archives or is it a case-by-case basis?