gmsv_luna

A native binary module loaded via require(“luna”) for two things Lua-land can’t be trusted to do itself: AES-256-CBC decryption and Ed25519 signature verification of DRM-delivered content, using a public key compiled directly into the binary. It also owns a sandboxed file-writer that installs and removes module, gamemode, and addon files outside GMod’s normal data/ sandbox — the only way DRM-delivered builds can land where GMod’s loader will actually find them. Built with CMake and vcpkg for both Windows and Linux targets.