Current affair diary 12/12/2020

Quantum key distribution (QKD):

√The Defence Research and Development Organisation (DRDO) successfully demonstrated communication between its two labs using Quantum Key Distribution technology.

√ The Defence Research and Development Laboratory (DRDL) and The Research Centre Imarat (RCI) were the two labs that participated in this demonstration.

√Typical encryption relies on traditional mathematics and while for now it is more or less adequate and safe from hacking, the development of quantum computing threatens that.

√ Quantum computing refers to a new era of faster and more powerful computers, and the theory goes that they would be able to break current levels of encryption.
√ QKD works by using photons — the particles which transmit light — to transfer data.
√ QKD allows two distant users, who do not share a long secret key initially, to produce a common, random string of secret bits, called a secret key.
√ Using the one-time pad encryption this key is proven to be secure to encrypt and decrypt a message, which can then be transmitted over a standard communication channel.

√The encryption is “unbreakable” and that’s mainly because of the way data is carried via the photon. A photon cannot be perfectly copied and any attempt to measure it will disturb it. This means that a person trying to intercept the data will leave a trace.
√ The implications could be huge for cybersecurity, making businesses safer, but also making it more difficult for governments to hack into communication.

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