"Multikey 18.1.1" typically refers to a specific version of a virtual USB emulator driver used to bypass physical hardware dongles (like Sentinel HASP) for high-end industrial software like Mastercam or Proteus.
This sits between the Windows USB core stack and the application. It captures IOCTL_USB_GET_DESCRIPTOR requests. If a request matches a known dongle ID (stored in a .REG or .DNG file), the driver responds with a pre-recorded handshake. Multikey 18.1.1
driver file, which must be installed in Test Mode on Windows 64-bit systems. Critical Considerations Security Risks "Multikey 18