A device developed by engineers at the Indian Institute of Science generates true random numbers
The developers explain that when a particle hitsinto the trap, the current registered by the device increases, and when released, it decreases. The time of change of the electric current determines the generated random number.
“You can't exactly predict when an electron will get trapped. There is inherent randomness in this process,” explains Kausika Majumdar, co-author of the study.
The researchers tested their device withusing tests developed by the US National Institute of Standards and Technology. Tests showed a record value of the minimum entropy - 0.98. The values of this indicator range from 0 (completely predictable) to 1 (completely random). The previous record, according to the researchers, was 0.89.
The researchers note that the created by themThe device has another advantage over traditional optical hardware random number generators: its size. According to the developers, millions of such devices can be created on a single chip.
Random number generators are used togenerating cryptographic keys. But most keys are now generated on computers using pseudo-random number generators. They use mathematical formulas or pre-programmed tables to produce numbers that appear to be random but are not.
The researchers plan to refine their device to improve performance and enable mass production.
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