Quantum Elgamal Cryptosystem

ADITYA, AGRAWAL and BHASKAR, BISWAS and K.K., SHUKLA and VAIBHAV, GUPTA (2017) Quantum Elgamal Cryptosystem. In: Sixth International Conference on Advances in Computing, Control and Networking - ACCN 2017, 25-26 February 2017, Bangkok, Thailand.

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Public key cryptography is extensively used for encryption, signing contracts and secure exchanges over the unreliable network. The findings of Shor in 1994, of a powerful algorithm which was based on quantum mechanics for computing discrete logarithms and factoring large integers sabotaged the security presumptions upon which the currently used public key cryptographic protocols are based, like ElGamal, RSA and ECC. However, few cryptosystems, known as post quantum cryptosystems, while not currently in wide use are considered to be resistant to such attacks. In this paper, a quantum version of ElGamal Cryptosystem is proposed whose security relies on the commutative rotation transformations and measurements in computational basis of qubits. An understanding of the new scheme over the quantum channels is provided. The proposed cryptosystem allows the party to send messages in the form of qubits over a quantum channel. Also the proposed protocol provides an opportunity for two parties to exchange keys which is considered as one of the major concerns while developing post quantum cryptosystems.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Quantum, elgamal, shor, post quantum,commutative rotation, qubits, cryptosystem.
Depositing User: Mr. John Steve
Date Deposited: 16 Mar 2019 12:31
Last Modified: 16 Mar 2019 12:31
URI: http://publications.theired.org/id/eprint/560

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