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Andysah Putera Utama Siahaan
Universitas Pembangunan Panca Budi
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Enhancing the Hill Cipher with a Three-Pass Protocol Approach Siahaan, Andysah Putera Utama; Binti Saari, Erni Marlina; Hassan, Moustafa Hussein Ali; A. Khalid, Noor Aldeen; Pane, Muhammad Akbar Syahbana
Proceedings of The International Conference on Computer Science, Engineering, Social Science, and Multi-Disciplinary Studies Vol. 1 (2025)
Publisher : CV Raskha Media Group

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64803/cessmuds.v1.5

Abstract

This paper presents the design and implementation of a cryptographic scheme that combines the Hill Cipher algorithm with the Three-Pass Protocol (TPP) using mod-256 arithmetic. The objective is to provide a secure communication mechanism without direct key exchange while adapting a classical cipher to modern digital contexts. The system employs a 2×2 key matrix where plaintext characters are mapped to their ASCII values, grouped into vectors, and transformed through matrix multiplication followed by modulo reduction. The TPP structure allows both sender and receiver to apply their private keys independently, producing layered ciphertexts before the final recovery of the plaintext. A prototype application was developed using Microsoft Visual Studio 2010 (Visual Basic) to validate the approach. The program includes input fields for plaintext, ciphertext at each stage, key matrices, and a log box that records the detailed matrix operations for transparency. Experimental results demonstrate that the original plaintext can be accurately restored after multiple encryption and decryption phases, while the intermediate ciphertexts remain random and unintelligible. The findings confirm that integrating Hill Cipher with the Three-Pass Protocol strengthens confidentiality and eliminates the need for key distribution. Beyond its security benefits, the prototype also serves as an educational tool, helping students and practitioners understand both matrix-based encryption and keyless secure communication protocols.
Co-Authors A. Khalid, Noor Aldeen Abda Abda Abdul Khaliq Afandi Syahputra Alex Siregar Alfiandi, Alfiandi Alviona Marsya Ami Abdul Jabar Amin, Muhammad Andreas Ghanneson Nainggolan Anwar, Dede Utari Anzas, Anzas Ibezato Zalukhu Aprijal, Rendi Arahman Harahap Arif Rahman Asyifa, Nathania Aulia, Wina Ayu, Ayu Ofta Sari Baehaqi Bambang, Bambang Sugito beckham pratama, arya Binti Saari, Erni Marlina Chairul Indra Angkat Darmeli Nasution Datin, Maha Valne Desy Ramatika Dewi Sartika Didi Riswan Dina Marsauli Sibarani Donas Putra Efendi, Syahril Efriansyah Putra Bahari Barus Efriansyah Putra Bahari Barus Ehkan, Phaklen Eka Putra Eko Hariyanto Eko Hariyanto EKO WAHYUDI Fahmi Izhari Fakhri Rizaldi Fakhri Rizaldi Farta wijaya, Rian Fawaz, Muhammad Ayyas Fawaz, Muhammad Ayyasi Ghanneson Nainggolan, Andreas Hafizhah Sufina Az-Zahra Hafizhah Sufina Azzahra Hasibuan, Peronika Br Hassan, Moustafa Hussein Ali Hendra Harnanda Hermansyah Hermansyah Hermawan, Bagus Hery Saputra Parinduri Ibrahim Ibrahim Imam Solihin Iqbal Wiranata Siregar Iqbal Wiranata Siregar, Jimmy Juliyandri Saragih Kariyani Kezia Milline Seft Sinurat Khairil Putra Khairul Khairul Khairul , Khairul Khairul Khairul, Khairul Khairunnisa Kiki Artika Leni Marlina Leni Marlina Leni Marlina M Dico Triyadi Maha Valne Datin Manurung, Monica M Marsauli Sibarani, Dina Melva Sari Panjaitan Mesran, Mesran Muham, Dinda Novita Sari Muhammad Akbar Syahbana Pane Muhammad Dafa Al Fikri Muhammad Hasanuddin Muhammad Hasanuddin Muhammad Indra Muhammad Iqbal Muhammad Iqbal Muhammad Irsyad Muhammad Irsyad Muhammad Syahputra Novelan Muhammad Wahyudi Muhammad Zarlis Nabila Putri Br Sitepu Nahampun, Natalia Natalia Nahampun Nathania Asyifa Nova Mayasari Nur Azizah Harahap Nurwijayanti Peronika Br Hasibuan Popi Aulia Puspita Wanny Putra, Donas Putra, Khairil Rabe, Siska Mayasari Rahma Syahri Rahma Yuni Simanullang Ramatika, Desy Rambe, Rezkinah Rendi Aprijal Retno Mutiara Rezkinah Rambe Rian Farta Wijaya Rizky Rinaldi Simamora, Siska Simorangkir, Elsya Sabrina Asmita Sinyo Andika Nasution, Ahmad Siregar, Iqbal Wiranata Siska Mayasari Rabe Sitepu, Nabila Putri Br Sitorus, Zulham Solihin, Imam Sony Putra Sri Wahyuni Sugeng Pranoto Suheri Sulis Sutiono Supiyandi Supiyandi Swandi Dedi Arnold Pardede Syafran Panggabean, Edwin Syahri, Rahma Syamsiar, Syamsiar Syamsul Arifin Trisnani, Anis A Ullah, Insaf Utari Wiko Pratama Wina Aulia Wina Aulia Wulan Ramadhani Zuhri Ramadhan Zulfan Zulfan Zulfan Zulham, Zulham Sitorus