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A General Bit Level Data Encryption Technique using Helical & Session Based Columnar Transpositions

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3 Author(s)
Bhattacharya, T. ; Inf. Technol. Dept., JIS Coll. of Eng., Kalyani ; Bhattacharya, T.K. ; Chaudhuri, S.R.B.

This paper gives a new approach for encrypting different types of files like text, image, audio, video etc. The file is considered as a binary string. It is first broken into blocks of equal sizes. Each block is then represented as a square matrix. Helical transposition is applied first, and then columnar transposition is done on the basis of session key. Session key is a 24 bit sequence which is used to generate decimal number sequence and accordingly columnar transposition is done. For decryption session key and anti-helical algorithm both are required.

Published in:

Advance Computing Conference, 2009. IACC 2009. IEEE International

Date of Conference:

6-7 March 2009

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