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A SwiftRNG Z

SwiftRNG Z is a general purpose USB device that generates true (hardware) random numbers at a rate of 80 Mbits per seconds based on the Zener diode breakdown effect (due to quantum tunneling). It can be used in conjunction with SwiftRNG and SwiftRNG LE.

$349

Devices will be shipped in 1–2 business days. For bulk orders of 10 or more devices, please contact us. Please note that for orders outside of the United States, the buyer is responsible for costs such as duties, taxes, and customs clearance when the shipment is picked up in the destination country.

How it works

SwiftRNG Z utilizes random noise generated from two independent and reliable sources based on the electrical noise produced by Zener breakdown effect (due to quantum tunneling) in a Zener diode. Zener diodes used in this device have a negative thermal coefficient and operate at about 4.6 breakdown voltage. The electrical noise generated by each random source is independently amplified, filtered, and converted into digital values. The random bytes produced by both noise sources are combined and processed internally with a Linear Corrector, a technique proposed by P. Lacharme (“Post-Processing Functions for a Biased Physical Random Number Generator”. In: FSE 2008. LNCS, vol. 5086, pp. 334-342. Springer-Verlag. 2008), using a 0.5 compression rate.

Quality checking

SwiftRNG Z implements an embedded health check test (HCT) that monitors the quality of the random noise sources immediately after the electrical noise is digitized and before any further processing. The HCT logic appends a health check status byte to each transmitted data packet so that the host computer is continuously notified about the health of the generator. In addition, SwiftRNG Z comes with an API for running internal diagnostics that can be triggered through software or device API.

Additional ‘Repetition Count Test’ and ‘Adaptive Proportion Test’ tests are continuously performed through the provided SwiftRNG Software API on the host computer to ensure the quality of the final random bytes retrieved through the USB interface.

SwiftRNG Z contains patented technology.

Tech specs

More tech specs

True random byte download speed 80 Mbps using USB highspeed compatible interface
Power consumption Draws no more than 180 mA
Weight 21 grams (0.7 oz)
Data connectivity and control interface USB 2 high-speed interface with EMI filtering (also compatible with full-speed interface)
Random source Two independent circuits based on Zener breakdown effect in a Zener diode
Embedded correction algorithm Linear correction proposed by P. Lacharme
Kernel module With the swrandom kernel module for Linux, random bytes generated by the SwiftRNG can be available for download from /dev/swrandom on x86-64 systems.
Embedded health check test (HCT) Continuous health diagnostics of all random noise sources
Implemented statistical tests Continuous ‘Repetition Count’ and ‘Adaptive Proportion’ statistical tests
Power supply USB bus powered
RoHS compliance All parts and materials are lead-free and RoHS compliant

Use cases

SwiftRNG Z is a versatile device that can be used for a wide range of purposes:

  • Generation of encryption and secure session keys
  • Feeding the /dev/random entropy pool
  • Research (statistical sampling)
  • Computer simulations
  • Gaming servers

System requirements

  • Linux (x86, x64)
  • or macOS 10.6 and up
  • or Windows 7, 8.1 and 10 (x86, x64)
  • USB 2.0 or 3.0 high-speed host/hub

Warranty and return policy

TectroLabs offers a 1-year limited warranty on SwiftRNG Z. We will repair or replace (at our sole discretion) any device that fails due to defect in materials or manufacturing. A SwiftRNG Z may be returned within 30 days of purchase for a full refund (buyer will pay for return shipping).