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Secure Three-Party Authenticated Quantum Key Distribution Protocols

Secure Three-Party Authenticated Quantum Key Distribution Protocols

ABSTRACT

This project presents Quantum Key Distribution Protocols (QKDP’s) to safeguard security in large networks, by using DES algorithm for encryption and decryption of .txt file. In this project the sender and the receiver should register themselves into the separate databases maintained for them and then whenever each user either on the sender or the receiver side makes a login request, an individual secret key is created. The Trusted Center considered being the three party authenticates both the sender and the receiver, the secret key is generated by the Trusted Center.
The Trusted Center issues a quantum key to both the sender and the receiver after the verification of the secret key. The generation of the quantum key involves the selection of 8-bit random key using the appropriate function available in .Net. By using RSA algorithm session key is generated. The session key is converted into binary from which the last two binary digits are chosen through which the quantum key is created. Once the quantum key matches on both the sender and the receiver side, the data can be encrypted and the intermediate encrypted form is viewable. Similarly after decryption the encrypt_decrypt file is also available. Thus a secure transmission of data takes place between the sender and the receiver using Trusted Center.