An extended Playfair Cipher using rotation and random swap patterns

@article{Hans2014AnEP,
  title={An extended Playfair Cipher using rotation and random swap patterns},
  author={Swati Hans and Rahul Johari and Vishakha Gautam},
  journal={2014 International Conference on Computer and Communication Technology (ICCCT)},
  year={2014},
  pages={157-160}
}
In this paper, we have proposed an encryption method which is developed by extending Playfair Cipher to make it more secure. Known as Polyalphabetic cipher, Playfair uses a key matrix containing 25 characters for encryption. This extended playfair cipher supports all 26 characters filled in two different key matrices, second matrix having extra checksum characters. As Playfair is susceptible to various attacks, so to avoid that, we included rotation operation on key matrices and swapping of… CONTINUE READING

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