Fuzzy Graph–Based Encryption using Special Characters

Abstract

This work presents a novel data encryption method using fuzzy graph theory. The plaintext
is represented as a fuzzy graph, where characters act as vertices with membership values and their
relationships form fuzzy edges. The encryption process uses two secret keys to introduce
uncertainty within the interval [0,1].Different models are developed for handling alphabets,
numbers and special characters. A systematic decryption process ensures accurate recovery of
the original message. This approach enhances data security by making the encrypted
information difficult for unauthorized users to interpret, while maintaining flexibility and
efficiency.