A Modified Circular Version of Playfair Cipher

Pandey, Ashish; Badal, Neelendra

doi:10.2139/ssrn.3351022

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…Third rule is if two plaintext letters in the same column then each letter will shift to bottom once [21]. fourth rule is When two letters lie in different positions row and column that form square or rectangle then each letter will substitute with that letter in lies in same row, So for column [22].…”

Section: Standard Playfairmentioning

confidence: 99%

Arabic and English Texts Encryption Using Modified Playfair Algorithm

Qurban

2024

wjps

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To maintain the security and integrity of data, with the growth of the Internet and the increasing prevalence of transmission channels, it is necessary to strengthen security and develop several algorithms. The substitution scheme is the Playfair cipher. The traditional Playfair scheme uses a small 5*5 matrix containing only uppercase letters, making it vulnerable to hackers and cryptanalysis. In this study, a new encryption and decryption approach is proposed to enhance the resistance of the Playfair cipher. For this purpose, the development of symmetric cryptography based on shared secrets is desired. The proposed Playfair method uses a 5*5 keyword matrix for English and a 6*6 keyword matrix for Arabic to encrypt the alphabets of both languages.

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Section: Standard Playfairmentioning

confidence: 99%

Arabic and English Texts Encryption Using Modified Playfair Algorithm

Qurban

2024

wjps

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“…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. Selain itu, pada penelitian yang dilakukan oleh Pandey dan Badal [6] yang dalam penelitiannya memberikan hasil bahwa modifikasi Playfair Cipher lebih baik dalam mengamankan pesan dibandingkan Playfair Cipher asli.…”

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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