The latest version of NOISE.SYS (v0.3.5-Beta) can be gotten via anonymous ftp at ftp.funet.fi/pub/crypt/random/noise035.zip NOISE.SYS is a /dev/random driver for DOS systems running on 386 or later processors. It will sample fast timings between keystrokes and disk access, as well as changes in mouse position and CPU-clock drift, mixing with SHA-2 message digest to generate crypto-quality random numbers. Added in this version: Added documentation!!! Fixed timer sampling bug Fixed clock drift sampling (better entropy too) Added mouse position sampling Different accumulation function Lots of other changes