Combination Vigenere Cipher and One Time Pad  for Data Security

Rahim, Robbi; Kurniasih, Nuning; Mustamam, M; Andriany, Liesna; Nasution, Usman; Muhammad, Amiruddin Hi.; Nanuru, Ricardo Freedom; Gs, Achmad Daengs; Ahmar, Ansari Saleh

doi:10.14419/ijet.v7i2.3.12624

Cited by 13 publications

(11 citation statements)

References 14 publications

(16 reference statements)

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“…salah satu metode yang dapat digunakan kriptanalisis adalah dengan menggunakan metode Kasiski. Metode kasiski akan melakukan penebakan panjang kunci melalui serangkaian perhitungan pola huruf n-graf [2][3][4] [5]. Oleh karena itu dalam peneltian untuk menggabungkan beberapa algoritma untuk dimodifikasi yaitu vignere dan one time pad untuk proses enkripsi dan penambahan algoritma perpanjangan kunci dari rc6 untuk menghilangan perulangan kunci yang terjadi sehingga keamanan data menjadi lebih baik.…”

Section: Latar Belakang Masalahunclassified

Modification of Vigenere Algorithm and One Time Pad Using Rivest Code 6 (RC6) Key Expansion

Budiman¹,

Paradise

2019

Compiler

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Information technology that is increasingly developing today must be balanced with information security. Good security can minimize the possibility of information being stolen by cryptanalysis, one way is by applying cryptographic techniques. Vigenere Cipher is a key symmetry algorithm that uses a substitution technique that uses two letters encoding the original message. Vigenere cipher and one time pad have disadvantages because they use short keywords and their use will be repeated. The key expansion used is part of the RC6 encryption algorithm combined with Vigenere and One time pad to cover the weaknesses of the algorithm. The purpose of this study is to produce new variations with the modification of the vigenere cipher algorithm and one time pad by adding a key expansion process and tested using the avalance effect. Test results conducted based on modifications can achieve a high level of avalance effect which is 51.76%

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Section: Latar Belakang Masalahunclassified

Modification of Vigenere Algorithm and One Time Pad Using Rivest Code 6 (RC6) Key Expansion

Budiman¹,

Paradise

2019

Compiler

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“…The AES algorithm in the decrypt text messages that have been compressed to obtain the plaintext that will be inserted into the image file. For example the decryption is done by Ciphertext: CIPHER KEY = 2B 7E 15 16…”

Section: Decryption Ciphertextmentioning

confidence: 99%

Increase the PSNR Of Image Using LZW and AES Algorithm With MLSB on Steganography

Wijayanto¹,

Zarlis²,

Situmorang³

2018

IJET

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There are many research has done a hybridization approach of text message insertion that has been compressed with Lempel-Ziv-Welch (LZW) algorithm and has also been encrypted. The text messages in ciphertext form are inserted into the image file using LSB (Least Significant Bit) method. The results of this study indicate that the value of Peak Signal to Noise Ratio (PSNR) lower than the LSB method of 0.94 times with a ratio of 20.33%, with Kekre's method of 10.04%. To improve the value of PSNR stego image of insertion, in this research is inserted audio samples using 5 bits to reduce the amount of data insertion, so it can get the value of MSE stego image low. Prior to insertion, the text file is compressed with the Lempel-Ziv-Welch (LZW) algorithm and encrypted with the Advanced Encryption Standard (AES) algorithm. Then, the insertion of compression and encrypted text files is done with the Modified Least Significant Bit (MLSB) algorithm. To performa test reliability of steganography, the image stego image is done by calculating Mean Squared Error (MSE) and Peak Signal to Noise Ratio (PSNR). At extraction process with MLSB algorithm, decryption with AES algorithm and decompression with LZW algorithm. The experimental results show that the MSE values obtained are lower and the proposed PSNR method is better with (α) 1,044 times than the Kaur method, et al. The result of embed text file extraction from the stego image works well resulting in encrypted and uncompressed text files.

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“…In mathematics, prime numbers are natural numbers that only have two factors, namely the divisor is 1 and the number itself [1]. The uniqueness of prime numbers is widely used in cryptographic algorithms especially on key generation [2][3][4], the strength of a cryptography algorithm depends on the key used [5][6][7] and prime number is one of the factors that determine the strength of security [8][9][10]. Few algorithms using a prime number for the key is RSA, RC4 and Blowfish algorithm using the prime number in p and q key for encryption and decryption process [11][12][13][14], this prime numbers become essential not only in mathematics but also in computer science.…”

Section: Introductionmentioning

confidence: 99%

Pseudo-prime number simulation and its application for security purpose

et al. 2018

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Many public cryptography schemes rely on the use of prime numbers like for encryption and decryption. A prime number is one number that is widely used and large and consists of hundreds of digits, so it takes time to test whether the numbers are prime or not. Miller-Rabin is one algorithm that could be used to test prime number. Simulation to show how to test non-prime number elimination process can be used to determine the workings of the Miller-Rabin algorithm and also could be used as a media learning for students and lecturers to know how prime number test and generation.

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Combination Vigenere Cipher and One Time Pad for Data Security

Cited by 13 publications

References 14 publications

Modification of Vigenere Algorithm and One Time Pad Using Rivest Code 6 (RC6) Key Expansion

Modification of Vigenere Algorithm and One Time Pad Using Rivest Code 6 (RC6) Key Expansion

Increase the PSNR Of Image Using LZW and AES Algorithm With MLSB on Steganography

Pseudo-prime number simulation and its application for security purpose

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