A team at the Department of Electrical Communication Engineering (ECE), Indian Institute of Science (IISc) has developed a true random number generator (TRNG), which, the team says, can improve data encryption and provide improved security for sensitive digital data such as credit card details, passwords and other personal information. The study describing the device has been published in the journal  ACS Nano.

“Almost everything we do on the internet is encrypted for security. The strength of this encryption depends on the quality of random number generation,” explained Nithin Abraham, a PhD student who is a part of a team led by Kausik Majumdar, Associate Professor at ECE, which has developed the device.

Encrypted information can be decoded only by authorised users who have access to a cryptographic ‘key’. But the key needs to be unpredictable and, therefore, randomly generated to resist hacking. Cryptographic keys are typically generated in computers using pseudorandom number generators, which rely on mathematical formulae or pre-programmed tables to produce numbers that appear random but are not. In contrast, a TRNG extracts random numbers from inherently random physical processes, making it more secure, the IISc release explained.

source/content: thehindu.com (edited)