Meningkatkan Keamanan Pesan Rahasia pada Vigenere Cipher Menggunakan Kombinasi Caesar Cipher dan Multiple-Key

Khansa Intani; Gita Wulandari; Halimatul Hasanah; Ihsan Labib Syarifudin; Eugenius Mario Chandra Brillian

doi:10.51213/jimp.v8i1.847

Meningkatkan Keamanan Pesan Rahasia pada Vigenere Cipher Menggunakan Kombinasi Caesar Cipher dan Multiple-Key

Khansa Intani, Gita Wulandari, Halimatul Hasanah, Ihsan Labib Syarifudin, Eugenius Mario Chandra Brillian

Abstract

Kriptografi merupakan salah satu cara untuk mengamankan data yang ada. Salah satu kriptografi polyalphabetic yang populer adalah Vigenere Cipher. Akan tetapi Vigenere lemah terhadap analisa frekuensi karakter yang muncul pada ciphertext seperti Friedman dan Kasiski dikarenakan perulangan panjang key yang diperlukan untuk menyamakan panjang dengan plaintext yang digunakan. Dalam penelitian kali ini, penulis mencoba untuk meningkatkan keamanan pesan dalam penggunaan Vigenere Cipher yang dikombinasikan dengan Caesar Cipher dan penggunaan multi-key dengan panjang karakter yang berbeda-beda. Hasil dari enkripsi tersebut akan kami bandingkan dengan penggunaan Vigenere Cipher biasa menggunakan value dari Index of Coincidence dan hasil penelitian menunjukkan bahwa perulangan karakter pada ciphertext berkurang

Keywords

Vigenere Cipher; Caesar Cipher; Enkripsi; Multiple-key; Index of Coincidence

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References

A. L. Latifah, Lembaga Ilmu Pengetahuan Indonesia. Research Center for Informatics, Institute of Electrical and Electronics Engineers. Indonesia Section, dan Institute of Electrical and Electronics Engineers, 2018 International Conference on Computer, Control, Informatics and its Applications : Recent Challenges in Machine Learning for Computing Applications : proceedings : November 1st-2nd, 2018, Tangerang, Indonesia.

Next Generation Lightweight Cryptography for Smart IoT Devices:Implementation, Challenges and Applications.2019 IEEE 5th World Forum on Internet of Things (WF-IoT). IEEE, 2019.

Multi-Layered Encryption Method. IEEE Staff, 2019 3rd International Conference on Informatics and Computational Sciences (ICICoS). IEEE, 2019.

R. Hammad dkk., Implementation of combined steganography and cryptography vigenere cipher, caesar cipher and converting periodic tables for securing secret message, dalam Journal of Physics: Conference Series, 2022, vol. 2279, no. 1. doi: 10.1088/1742-6596/2279/1/012006.

A. Al-Sabaawi, Cryptanalysis of Vigenre Cipher: Method Implementation, dalam 2020 IEEE Asia-Pacific Conference on Computer Science and Data Engineering, CSDE 2020, Des 2020. doi: 10.1109/CSDE50874.2020.9411383.

K. Nahar dan P. Chakraborty, A Modified Version of Vigenere Cipher using 95 95 Table, Int J Eng Adv Technol, vol. 9, no. 5, hlm. 11441148, Jun 2020, doi: 10.35940/ijeat.E9941.069520.

An Extension of Vigenere Technique to Enhance the Security of Communication. International Islamic University Chittagong, Institute of Electrical and Electronics Engineers. Bangladesh Section, dan Institute of Electrical and Electronics Engineers, 2018 International Conference on Innovations in Science, Engineering and Technology : ICISET 2018 : International Islamic University Chittagong, Chittagong, Bangladesh : 27-28 October 2018.

D. Gautam, P. Sharma, C. Agrawal, M. Mehta, dan P. Saini, An Enhanced Cipher Technique using Vigenere and Modified Caesar Cipher, 2018.

A Complex Polyalphabetic Cipher Technique Myanmar Polyalphabetic Cipher. Sri Shakthi Institute of Engineering and Technology, Institute of Electrical and Electronics Engineers. Madras Section, India Electronics & Semiconductor Association, dan Institute of Electrical and Electronics Engineers, 2019 International Conference on Computer Communication and Informatics : January 23-25, 2019, Coimbatore, India.

L. Voleti, R. M. Balajee, S. K. Vallepu, K. Bayoju, dan D. Srinivas, A Secure Image Steganography Using Improved Lsb Technique and Vigenere Cipher Algorithm, dalam Proceedings - International Conference on Artificial Intelligence and Smart Systems, ICAIS 2021, Mar 2021, hlm. 10051010. doi: 10.1109/ICAIS50930.2021.9395794.

An Enhanced Polyalphabetic Algorithm On VigenereCipher with DNA-Based Cryptograph. Arab Computer Society, IEEE Computer Society, dan Institute of Electrical and Electronics Engineers., 2018 IEEE/ACS 15th International Conference on Computer Systems and Applications : October 28th to November 1st, 2018, Aqaba, Jordan.

B. Triandi, E. Ekadiansyah, R. Puspasari, L. T. Iwan, dan F. Rahmad, Improve Security Algorithm Cryptography Vigenere Cipher Using Chaos Functions.

A. Rizal, D. S. B. Utomo, R. Rihartanto, M. E. Hiswati, dan H. Haviluddin, Modified key using multi-cycle key in vigenere cipher, International Journal of Recent Technology and Engineering, vol. 8, no. 2 Special Issue 11, hlm. 26002606, Sep 2019, doi: 10.35940/ijrte.B1313.0982S1119.

C. R. S. Bhardwaj, Modification of Vigenre Cipher by Random Numbers, Punctuations & Mathematical Symbols. [Daring]. Available: www.iosrjournals.orgwww.iosrjournals.org

A. Ajmera, S. S. Ghosh, dan V. T. Asst, Secure LSB Steganography over Modified Vigenre-AES Cipher and Modified Interrupt Key-AES Cipher.

DOI: http://dx.doi.org/10.51213/jimp.v8i1.847

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