Title: [Enhancement] Add Input Validation for Empty Message Field

[saminadamn]

The encryption and decryption functions currently run even when the message input is empty, resulting in blank outputs. Adding a simple validation to prevent this and alert the user to "Enter a message before proceeding" would improve UX and avoid unnecessary function calls.

[surjeetsinhthakur123]

@saminadamn Check i have added new features.

[saminadamn]

Hi @surjeetsinhthakur123 👋

I’ve resolved this issue by adding validation checks to ensure that encryption and decryption functions don’t run on empty input. Now, users will be prompted to enter a message before proceeding, improving overall UX.

[GauravKarakoti]

Can i work on this?