Secure Communication System Using Classical Cryptographic Techniques for Sender Receiver Communication Android Application

Swanand Vinay Nerkar , Dr. M. S. Ishi , Bhavesh Ranjitsing Rajput , Jayesh Chandrakant Karankal

With the widespread use of mobile messaging applications, ensuring secure and flexible communication has become increasingly important. Most existing messaging platforms rely on a single standard cryptographic algorithm, creating dependency on one security mechanism. This project presents an Android-based secure messaging application that supports multiple cryptographic algorithms and allows users to dynamically select the encryption technique used for message transmission. The selected algorithm is configured at the user profile level and is applied automatically to all outgoing messages. All messages are encrypted at the client side before transmission and stored in encrypted form in a Firebase backend along with the corresponding algorithm metadata. The application is developed using Java in Android Studio and ensures that plaintext data is never exposed during storage or communication. By supporting multiple encryption schemes, the system enhances security, flexibility, and user control while reducing reliance on a single cryptographic standard. Experimental testing confirms correct encryption, secure message storage, and reliable communication. This work demonstrates a practical and adaptable approach to secure mobile messaging using user-configurable cryptographic techniques.

Published Paper   E-Certificate

"Secure Communication System Using Classical Cryptographic Techniques for Sender Receiver Communication Android Application", IJSDR - International Journal of Scientific Development and Research (www.IJSDR.org), ISSN:2455-2631, Vol.11, Issue 1, page no.a551-a564, January-2026, Available :https://ijsdr.org/papers/IJSDR2601059.pdf

Volume 11 Issue 1, January-2026

Pages : a551-a564

Paper Reg. ID: IJSDR_306826

Published Paper Id: IJSDR2601059

Downloads: 000214

Research Area: Science and Technology

Country: Shirpur / Dhule, Maharashtra , India

Published Paper PDF: https://ijsdr.org/papers/IJSDR2601059

Published Paper URL: https://ijsdr.org/viewpaperforall?paper=IJSDR2601059

ISSN: 2455-2631 | IMPACT FACTOR: 9.15 Calculated By Google Scholar | ESTD YEAR: 2016

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.15 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

Publisher: IJSDR(IJ Publication) Janvi Wave

This work is licensed under a Creative Commons Attribution 4.0 International License and The Open Definition