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

References

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