Text Security Using Vigenere Cipher and Hill Cipher

Handoko, Lekso Budi; Abdussalam, Abdussalam

doi:10.36080/bit.v19i1.1790

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…Vigenere Cipher is a manual compound alphabet encryption method (polyalphabetical substitution cipher) [13], [14]. The Vigenere Cipher basically uses a technique that is not much different from the Caesar Cipher [15].…”

Section: Vigenere Ciphermentioning

confidence: 99%

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File Cryptography Optimization Based on Vigenere Cipher and Advanced Encryption Standard (AES)

Muslih,

Handoko,

Rizqy

2023

JAIS

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The rapid The main problem in the misuse of data used in crime is the result of a lack of file security. This study proposes a data security method to protect document files using the Advanced Encryption Standard (AES) algorithm combined with the Vigenere Cipher. This research carried out 2 processes, namely the encryption process and the decryption process. The encryption process will be carried out by the AES algorithm and then encrypted again with the Vigenere Cipher algorithm. The experiments show that the proposed method can encrypt files properly, where there are changes in the value of the document file and the encrypted file cannot be opened and the description results do not cause changes to the original file. The results of this study are that the system is able to work properly so as to produce file encryption and decryption using the AES method combined with the Vigenere Cipher. In document files, the largest difference in encryption and decryption time is 8 seconds, while in image files the difference in encryption and decryption time is 17 seconds. This longest time difference is generated by large files.

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Section: Vigenere Ciphermentioning

confidence: 99%

“…The first character in the plaintext is encrypted using a key which is the first character of the keyword and likewise for the next step. The polyalphabetic nature of the Vigenere Cipher is implemented with a Vigenere square [14]. Its periodic nature is seen when the key length is the same as the plaintext length.…”

Section: Vigenere Ciphermentioning

confidence: 99%

File Cryptography Optimization Based on Vigenere Cipher and Advanced Encryption Standard (AES)

Muslih,

Handoko,

Rizqy

2023

JAIS

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“…Penelitian tentang kriptografi sebelumnya pernah dilakukan oleh Frobenius dan Hidayat [4] yang memberikan hasil bahwa penelitian tersebut berhasil mengkombinasikan empat metode kriptografi sekaligus dan Least Significant Bit (LSB) berbasis aplikasi mobile Android. Pada penelitian Handoko [5] yang melakukan kombinasi algoritma Vigenere Cipher dengan Hill Cipher yang digunakan untuk menyembunyikan pesan rahasia berupa teks. Dari penelitian ini didapatkan hasil nilai rata -rata Avalanche Effect 52,46% yang menunjukkan bahwa proses enkripsi dan dekripsi yang dilakukan telah berhasil mengamankan pesan rahasia.…”

Section: Pendahuluanunclassified

Keamanan Pesan Menggunakan Kriptografi dan Steganografi Least Significant Bit pada File Citra Digital

Wijayanti

Romadlon

2022

Euler J. Ilm. Mat. Sains dan Teknol.

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In the current era, data security disturbances often occur, such as data theft by unwanted people. To overcome security problems can be handled using cryptography and steganography methods. The cryptography process generates random writing that can obscure the message making it difficult for others to read. However, cryptography itself is still too weak to secure messages, so steganography is needed to disguise the existence of the message so that it is not visible to the human eye. Apart from hiding messages, another goal is to know the impact of message insertion. In this study, the encryption steps were followed by insertion and decryption followed by extraction. In the secret message encryption process using two algorithms, namely Vigenere Cipher and Playfair Cipher. In the process of inserting a secret message using Least Significant Bit (LSB) steganography. The results of the combination of cryptography and steganography are able to secure secret messages without causing significant changes even though the digital image used before and after the steganography process has increased in size, the Mean Square Error (MSE) value obtained is 0.000136 and the Peak Signal to Noise Ratio (PSNR) value is obtained. 86.8062 dB and the result of message encryption is enough to obscure the relationship pattern in the modified secret message with an avalanche effect value of 53.06%.

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Text Security Using Vigenere Cipher and Hill Cipher

Cited by 2 publications

References 7 publications

File Cryptography Optimization Based on Vigenere Cipher and Advanced Encryption Standard (AES)

File Cryptography Optimization Based on Vigenere Cipher and Advanced Encryption Standard (AES)

Keamanan Pesan Menggunakan Kriptografi dan Steganografi Least Significant Bit pada File Citra Digital

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