Abstract
Permutative Cipher Technique (PCT), a session based symmetric key cryptographic technique was proposed by the authors in February 2008 [1]. In this paper, PCT is implemented on CBC mode of operation with variable block length (VCBC mode) where initialization vector IV is of variable length. The comparative study of the technique PCT with and without VCBC mode has done on twenty files each of four different file types (.dll, .doc, .exe and .txt) with file sizes varying from 1 kB to 6.3 MB (approx.). Results are generated for comparison of PCT with and without VCBC mode with respect to encryption and decryption times, character frequencies, Chi-square values, Avalanche and Strict Avalanche values, Bit Independence values.
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Paul, M., Mandal, J.K., Singh, M.M. (2015). Modified PCT on Variable Cipher Block Chaining Mode. In: Mandal, J., Satapathy, S., Kumar Sanyal, M., Sarkar, P., Mukhopadhyay, A. (eds) Information Systems Design and Intelligent Applications. Advances in Intelligent Systems and Computing, vol 340. Springer, New Delhi. https://doi.org/10.1007/978-81-322-2247-7_47
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DOI: https://doi.org/10.1007/978-81-322-2247-7_47
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