Advanced Encryption Technique for Multimedia Data Using Sudoku-Based Algorithms for Enhanced Security

TL;DR

This paper introduces a Sudoku-based encryption system adaptable to multimedia data, enhancing security through timestamp-dependent key generation and versatile cipher methods, resulting in highly encrypted media resistant to attacks.

Contribution

It extends Sudoku-based encryption to multimedia data and improves security by integrating timestamp-dependent keys and multiple cipher techniques.

Findings

NPCR values for images approach 100%

SNR values for audio exceed 60dB

Encrypted media are highly resistant to brute-force and differential attacks

Abstract

Encryption and Decryption is the process of sending a message in a ciphered way that appears meaningless and could be deciphered using a key for security purposes to avoid data breaches. This paper expands on the previous work on Sudoku-based encryption methods, applying it to other forms of media including images, audio and video. It also enhances the security of key generation and usage by making it dependent on the timestamp of when the message was transmitted. It is a versatile system that works on multimodal data and functions as a block-based transposition cipher. Instead of shuffling, it can also employ substitution methods like XOR, making it a substitution cipher. The resulting media are highly encrypted and resilient to brute-force and differential attacks. For images, NPCR values approach 100% and for audio, SNR values exceed 60dB. This makes the encrypted audio significantly different from the source, making decryption more difficult.