Journal Online Jaringan COT POLIPD (JOJAPS), Volume 10, Issue 2

Modified Playfair Cipher Using Random Key Linear Congruent Method

Muhammad Syahrizal, Murdani Murdani, Surya Darma Nasution, Mesran Mesran, Robbi Rahim, Andysah Putera Utama Siahaan


Dibaca : 183 kali | Kategori Publikasi : Internasional


ABSTRACT

The number of crimes that arise due to data does not have good security makes many users choose one or more cryptographic algorithms to secure data. The application of cryptographic algorithms is widely used such as to secure text data, secure messages on short message service (SMS), secure messages on chat applications, secure records on the database. Many modifications were made to obtain safer algorithms and in this study Playfair cipher which is a classical cryptographic algorithm modified by changing the key consisting of 25 characters to 255 characters and the key used to encode resulting from randomization using a linear congruent method. The result obtained is that the encoded text is hard to know and the key used is random, making it difficult to solve by cryptanalyst.


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Tag : Playfair Cipher, Cryptography, Text Message, Linear Congruent


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