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A SwiftRNG Pro

SwiftRNG Pro is a general purpose USB device that generates true (hardware) random numbers at a rate of 200 Mbits per second without applying conditioning algorithms. It can be used in conjunction with SwiftRNG, SwiftRNG Z and SwiftRNG LE.


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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 Pro utilizes random noise generated from two independent and reliable sources based on the electrical noise produced by an avalanche breakdown effect in zener diodes. The electrical noise generated by each random source is independently amplified, filtered and converted into digital values. The random bytes generated by both noise sources are then combined into the resulting true random byte stream. The final random bytes are transmitted to the host computer via USB in 16,000 byte packets.

Quality checking

SwiftRNG Pro implements an embedded health check test (HCT) that continuously 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 Pro comes with a new API addition for running internal diagnostics that can be triggered through software or device API.

In addition to running the HCT, the monitoring logic will check the quality of the final random bytes produced by continuously running the tests ‘Repetition Count Test’ and ‘Adaptive Proportion Test.’

SwiftRNG Pro contains patented technology.

Tech specs

More tech specs Data sheet

True random byte download speed 200 Mbps using USB highspeed compatible interface
Power consumption Draws no more than 216 mA (fixed power profile)
Weight 22 grams (0.77 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 avalanche breakdown effect in reversed-biased Zener diodes
Post processing algorithms available Optional: SHA-256, SHA-512, Marsaglia’s XorShift64
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
Country of origin U.S.

Use cases

SwiftRNG Pro 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

Statistical tests

SwiftRNG Pro device passes the following statistical test suites for measuring the quality of a random number generator: Diehard, Dieharder, NIST, Rngtest, Ent, Crush, BigCrush.

You can download sample test reports using links below:

Test reports generated on Wed Apr 3 20:07:23 CDT 2019

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 Pro. We will repair or replace (at our sole discretion) any device that fails due to defect in materials or manufacturing. SwiftRNG Pro may be returned within 30 days of purchase for a full refund (buyer will pay for return shipping).