Enhanced Text Security Using Fernet Cipher and Power Associative Loop-Based S-Box

Using Base64 encoding, Fernet encryption, and ZIP compression. To increase encryption strength, it suggests a unique S-Box construction based on power associative loops. Although Base64 and Fernet guarantee data security, their cryptographic structures are weak. Although it doesn't support effective compression on its own, the S-Box improves security. The necessity of combining optimal compression with robust encryption is a significant research gap. The study assesses the trade-offs between performance and computational complexity in this integration. Additionally, it looks at adaptability to various languages and text formats. Tests of cryptographic strength using differential probability, avalanche effect, and nonlinearity reveal enhanced security with ECC support.