Symmetric Key Cryptosystem for Multiple Encryptions

A. ChandraSekhar; D. Chaya Kumari; S. Ashok Kumar

doi:https://doi.org/10.14445/22315373/IJMTT-V29P519

International Journal of Mathematics Trends and Technology

Research Article | Open Access | Download PDF

Volume 29 | Number 2 | Year 2016 | Article Id. IJMTT-V29P519 | DOI : https://doi.org/10.14445/22315373/IJMTT-V29P519

Symmetric Key Cryptosystem for Multiple Encryptions

A. ChandraSekhar, D. Chaya Kumari, S. Ashok Kumar

Citation :

A. ChandraSekhar, D. Chaya Kumari, S. Ashok Kumar, "Symmetric Key Cryptosystem for Multiple Encryptions," International Journal of Mathematics Trends and Technology (IJMTT), vol. 29, no. 2, pp. 140-144, 2016. Crossref, https://doi.org/10.14445/22315373/IJMTT-V29P519

Abstract

Multiple encryptions is the process of encrypting the plain text more than once. If the plaintext is encrypted twice, then the process of the first encryption is usual encryption and the process of second-time encryption is referred as the superencryption. For multiple encryptions, same or different algorithms can be used. If the same key is used for multiple encryptions, for an attacker it is not that hard to recover the plain text. In this paper, a symmetric cryptosystem is proposed using Fibonacci numbers for the first level of encryption and Affine or Vigenere transformation is employed for super encryption.

Keywords

Fibonacci numbers, Affine, Vigenere transformations.

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