| HG324 Hardware Random Bit Generator | Users Manual |
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Quickstart | Contents | Software |
Contents:
Main characteristics
HG 324 is a quad hardware random number generator of the
new generation, capable
of delivering bits at unpreceded rates of up to 1 200 000 bit/sec .
The probability of ones p(1) for this generator is very close to
one-half, and it is mainly due to the hardware imperfections that
a bias occurs at all. We define bias as p(1)-0.5.
Careful manufacturing and components selection for each unit keeps
the bias at the lowest possible level.
The absolute difference |p(1) - 0.5| is smaller
than 1 x 10E-11 .
It is our best generator.
The extremly small bias combined with the high bit rate makes HG 324 generator suitable for any purpose from educational, scientific, Monte Carlo simulation, lottery and massive key, password or pin/tan bank numbers generation to most demanding such as mathematics and scientific modeling and cryptography.
Numbers produced by HG 324 generator pass, with the high probability, any known "standard" statistical randomness test such as: Frequency test, ChiSquare, Entropy, Autocorrelation test, KS test, picturing randomness and others, as well as the most stringent ones: the Marsaglia's Diehard battery of tests and the Maurer's Universal Statistical Test .
This alone makes the HG 324 one of the best generators on the market at present.
It is also the fastest generator in its class since it achieves bitrates at least 50 times faster than any commensurable concurent models on the market.
To illustrate how small its bias is, one can calculate
that it would be necessary to generate
10 000 000 000 000 000 000 000 bits (1 x 10E+22)
in order to effectively measure
the bias as a 3 sigma effect. This would take 246 millons of years of
running of HG 324 at the full speed !
Why is it random ? The HG 324 series random bit generators rely on extracting randomness from an intrinsically random physical process in semiconductor diodes. Namely, a Zener diode operated in a special circuit and under convinient conditions can produce a small amount of abruptly changing current which occurs as a result of so called "voltage breakdown". This erratic process is governed by laws of Quantum Physics and is completely random in its nature. It produces a small voltage variation across the diode which is extracted via AC coupling and amplified to achieve a large amplitude noise. The noise is then used to controll a logic digitisation circuitry, which upon a request, produces either 0 (logic zero) or 1 (logic one) at its output.
A very schematic diagram of the HG 324 type generator is
shown below:
How to connect it to a computer ?
HG 324 is simply connected to a parallel or serial port of an IBM compatible
personal computer (PC). You don't need to know the name or address of
the port. The software that comes with the unit scans through all
valid ports and when the unit is found, it establishes connection to it.
To connect the HG 324 unit to the parallel port of a PC computer please follow these steps:
To connect the HG 324 unit to the serial port of a PC computer please follow these steps:
Important notice
Rather than drawing the current from the PC port, HG 324 comes with its own wall socket cube adapter which delivers the necessary supply power. This allows stable operation of the generator regardless of the PC hardware used. It also permits standalone operation or use of the generator in a different setup.
What hardware and software do I get ? HG 324 comes in a package which consists of the generator, adapter for powering the generator (input voltage: 100-240VAC, 50-60Hz) and all the software necessary to test the unit, download random bits into a file, view random numbers as points in plane and a few programs to perform statistical tests on generated bits.
Software programs and drivers are available for: Linux and MS DOS and MS-Windows 95/98/ME/NT running on IBM PC compatible.
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Quickstart | Contents | Software |