article · Indian Journal of Science and Technology · 2009

An approach in improving transposition cipher system

Cited by 21Open access

Abstract

Transposition ciphers are stronger than simple substitution ciphers. However, if the key is short and the message is long, then various cryptanalysis techniques can be applied to break such ciphers. By adding 8 bits (one byte) for each byte using a function and another mathematical function to position the bits in a binary tree and using its in-order tour, this cipher can be made protected. Using an in-order tour of binary tree can diffuse the eight bits (includes 7 bits produced by the function and 1 random bit) and eight bits of the plaintext. This can highly protect the cipher. However, if the key management processes are not secured the strongest ciphers can easily be broken. Keywords: Cryptography, binary tree, cipher protection, transposition cipher.

Cite this paper

APA 7

Sokouti, M. (2009). An approach in improving transposition cipher system. Indian Journal of Science and Technology, 2(8), 9–15. https://doi.org/10.17485/ijst/2009/v2i8.7

MLA 9

Sokouti, Massoud. “An approach in improving transposition cipher system.” Indian Journal of Science and Technology, vol. 2, no. 8, 2009, pp. 9–15, https://doi.org/10.17485/ijst/2009/v2i8.7.

Chicago

Sokouti, Massoud. 2009. “An approach in improving transposition cipher system.” Indian Journal of Science and Technology 2 (8): 9–15. https://doi.org/10.17485/ijst/2009/v2i8.7.

Harvard

Sokouti, M. (2009) ‘An approach in improving transposition cipher system’, Indian Journal of Science and Technology, 2(8), pp. 9–15. Available at: https://doi.org/10.17485/ijst/2009/v2i8.7.

BibTeX

@article{sokouti2009approach,
  title = {{An approach in improving transposition cipher system}},
  author = {Sokouti, Massoud},
  journal = {Indian Journal of Science and Technology},
  volume = {2},
  number = {8},
  pages = {9--15},
  year = {2009},
  doi = {10.17485/ijst/2009/v2i8.7}
}

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