ComScire PCQNG v2.0.2

The ComScire PCQNG True Random
Number Generator (TRNG) represents a
quantum leap forward in the
production of high quality, True or
Quasirandom (algorithmically
extended) numbers for use on your
Personal Computer. The PCQNG
extracts the True Physical Entropy
being constantly generated by
hardware already present in your PC
to produce a continuous, high-speed
stream of virtually perfect random
numbers containing one bit of actual
entropy per output bit. The
generator's output is made easily
available through the PCQNG software
in a number of user selectable modes.

Many suggestions have been made for
possible methods of obtaining
entropy from personal computers.
These include keyboard timing or
intervals, following mouse movements
and timing, and air turbulence in
hard drives. There have also been
many vague ideas of using the
various timing signals from
subsystems in the PC, such as the
BIOS clock, the serial card and the
real time clock. In addition to
these are the progressively more
restrictive ideas that require
certain additional hardware to be
attached to your computer. These
include measuring ping response time
on computers which are networked,
digitizing static from a radio
receiver through the sound card, and
finally, even using digitized images
of Lava Lamps.

All these ideas suffer from one or
more limitation or theoretical flaw
which have made them virtually
unusable as practical sources of
random numbers. The most serious
defect in all the methods proposed
is that there is no theoretical
basis for precisely quantifying the
actual entropy content of the output
sequence. There is usually no
acceptable method of predicting, or
even measuring the statistical
properties of those sequences within
necessary confidence levels. The
output bit rate is sometimes
measured in bits per minute and some
of the methods require the active,
physical participation of the PC
user (you) to produce any output at
all.