# Blockchain based secure data handover scheme in non-orthogonal multiple access

## TL;DR

This paper proposes a blockchain-based data security scheme for NOMA wireless networks, utilizing a two-phase encryption process to enhance data protection against unauthorized access.

## Contribution

It introduces a novel two-phase encryption scheme combining blockchain technology with NOMA to improve data security in wireless communications.

## Key findings

- The proposed scheme effectively secures data transmission in NOMA networks.
- Comparative analysis shows the scheme outperforms existing methods.
- Enhanced resistance to unauthorized access and tampering.

## Abstract

Non-orthogonal multiple access (NOMA) with successive interference cancellation receiver is considered as one of the most potent multiple access techniques to be adopted in future wireless communication networks. Data security in the NOMA transmission scheme is on much attention drawing issue. Blockchain is a distributed peer-to-peer network enables a way of protecting information from unauthorized access, tempering etc. By utilizing encryption techniques of blockchain, a secured data communication scheme using blockchain in NOMA is proposed in this paper. A two-phase encryption technique with key generation using different parameter is proposed. In the first-phase data is encrypted by imposing users' public key and in the second phase, a private key of the base station (BS) is engaged for encryption. Finally, the superiority of the proposed scheme over existing scheme is proven through a comparative study based on the different features.