Cryptography in Quantum Computing
Kuldeep Singh Kaswan, Jagjit Singh Dhatterwal, Anupam Baliyan, Shalli Rani · 2023
Quantum cryptography (QKD) relies on the rules of physics to generate a key for distribution. Rivest, Shamir, Adleman (RSA), a standard encryption technology, is one of the many protections required to protect our data. The RSA algorithm uses two keys, one public and one private, to encrypt data. A quantum computer can factor numeric values with ease; hence, additional cryptographic techniques (quantum cryptography) must be utilized to protect communications. Quantum cryptography uses quantum physics to produce a secret key rather than relying on standard numerical techniques. A quantum communications channel is employed to disseminate the quantum key as a second component of the QKD jigsaw. The BB84 protocol has been simplified using an updated version of the QKD protocol. Bob involves measuring the qubits using a random advanced computer foundation, or basis. The chapter looks at Ekert's quantum entanglement-based cryptography.