Q. With reference to Quantum Key Distribution technology, consider the following statements:
1. It is a secure communication technique that uses quantum properties of photons to encrypt secret keys.
2. The data encryption relies on mathematics.
Which of the statements given above is/are correct?
Answer: A
Notes:
Statement 1 is correct: Quantum Key Distribution (QKD) is a secure communication technique that uses quantum properties of photons, the elementary particles of light, to encrypt secret keys that can be shared by two parties to protect their communications.
Statement 2 is incorrect: Typical encryption relies on traditional mathematics, and while for now, it is more or less adequate and safe from hacking. But, the QKD uses physics to encrypt data.
Source: Telecom secretary asks C-DoT to work on 6G, launches Quantum Communication Lab

