30.03.2015 -
After some improvements the WHISPERs OTP algorithm is back! The way to overcome Vernam’s cypher drawbacks came like a revelation to us almost 5 years ago. It took a while to think it thru, improve it and make some tests. We are no mathematicians and maybe there are hidden problems in our approach. This is why we decided to release it for peer review. Any critical feedback will be greatly appreciated! You can download the WHISPERs – A better approach to OTP now!
Reserve link here – WHISPERs – A better approach to OTP
26.02.2015 -
After undergoing more modifications, the new and improved WHISPERs V2 has been harvested and tested. The design features USB comms and improved mathematics package with an Altera CPLD. You can download the WHISPERs V2 TRNG Test Results now!
25.12.2014 -
03.10.2014 -
We have successfully finished implementing a MATLAB + HIL based educational R&D stand at Technical University – Sofia! We would like to thank PhD Borislav Grigorov and Prof. Dr. Eng. Konstantin Dimitrov for the chance to work on a challenging task. We wish them and their students well and many successes! Check the link above for pictures and videos!
09.09.2014 -
Welcome the BEa1051 CONDUCTOr – a 10Wp / 2.5W carrier DDS based AM exciter. Preliminary tests show excellent modulation characteristics. The PA stage is realized as a push-pull tandem of two pure Class A amps, capable of delivering more than 16Wp of undistorted power, but set back to run cool, fan-less and stable into 50 ohms load. Stability tests performed show that the CONDUCTOr’s protection circuitry allows it to handle anything from open circuit to short on the output. Frequency is set via serial terminal menu on USB. Last setting is retained in EEPROM, allowing for a single setup run. More info, pictures and measurements will follow soon.
07.04.2014 -
You can download the WHISPERs TRNG Test Results now!
25.03.2014 -
Work is progressing on the WHISPERs TRNG and the new DDS based AM exciter.
- WHISPERs TRNG is undergoing a minor modification. The new DIEHARD, NIST and ENT test results will be published soon.
- The DDS based AM exciter was reworked with the AD9851 DDS from Analog Devices Inc. The modulation is achieved by varying the ADC current directly at the DDS. A new Elliptic (Cauer) filter and a GALI6 MMIC buffer amplifier were developed and implemented. We now work on the control software for the DDS. Prototype controller is based on the PIC16F88 by Microchip.
30.01.2014 -
The TIMEKEEPEr RTC module is finally here! Check out the product section and Knowledgebase.
25.12.2013 -
MERRY CHRISTMAS!!! Let 2014 bring us all light!
18.11.2013 -
A new section has been added to the knowledgebase – Bootloaders. Check it out!
05.11.2013 -
The new BOb RCe100 is here! Check out the product page and the Knowledgebase for the updated datasheet and examples.
17.10.2013 -
The Encryption section of the Knowledge Base has been updated. Have fun!


News Archive


Engineering Bureau Barin welcomes you. We are an electronics boutique, specializing in electronics R&D and low volume production in the fields of automation controllers, educational systems and kits and custom solutions. We provide consulting services and vintage tube radio repair shop. We develop and produce shortwave and mediumwave tube transmitters for AM and CW, receiving antennas for LW, MW and SW, transmitting antennas for SW and MW, DDS exciters, QRP SW CW amplifiers, wideband RF amplifiers, antenna signal distributors (multicouplers) and of course custom solutions in the field. We also research and develop proprietary encryption technology for COMSEC of data links over clear channels. Our team has experience in custom racing electric bicycles.

About Us

Talking electronics

Internet of Things (IoT) is an emerging concept. It suggests networking all home sensors and actuators in a world-wide network. It is a worrying and very naive concept for me. It defies all security and privacy principles of a home. Please follow this link to the Altera website for a full article.“Everything we have said so far is consistent with the view of the IoT as a giant remote-control device – a way to manage all your toys from your smart phone. That vision is valid, but it is not what industry giants have in mind. This thinking is shifting the driving force behind the IoT, away from the vendors planning limited applications such as home automation, and into the hands of purveyors of cloud data centers and big-data computing. For them, the IoT is the giant, ubiquitous vacuum cleaner that brings all of the world’s data to their analysis tools.” This is unacceptable for me. It is a blatant recon project. There are more secure and intelligent ways of accomplishing this task, without giving away your personal life. Embed.

A couple of months ago I stumbled upon a special door lock. It is web enabled. It uses WiFi and Bluetooth. When you approach the door, it automatically unlocks it. If you are away, you can unlock the door remotely, from any point around the globe with WiFi access. They said it is great, you can let your friends in anytime. Even from the Bahamas! And they said it is secure. To be honest, this product horrifies me. After giving it some thought, I drafted six different attack methods, which if properly executed will lead to unrestricted access thru the door.
Are devices getting too smart? 95% of all users have no idea of the risks OS based devices pose. They are told the device is secure and they buy it. This is why I try to leave all the serious tasks concerning asset security, command, control and life support to microcontroller based systems. And I’m not alone – all alarm systems, serious access control, fire extinguishing and detection, life support, nuclear control and space systems are microprocessor (or ASIC) based. When it comes to serious stuff we need task-specific electronics. Microprocessors fill the huge gap between fun and games, and everyday life.
Image: EPROM-Microcontroller Intel 8749H – Wikipedia