Session Key Based Manipulated Iteration Encryption Technique (SKBMIET)

• Main Authors: Som, S., Mitra, D., Haldar, J.
• Format: Conference Proceeding
• Language: English
• Subjects: ASCII; Block; Character generation; Cipher text; Computer applications; Cryptography; Decryption; Educational institutions; Electronic mail; Encryption; Frequency; Information security; Internet; Key; Matrix; Matrix converters; Plaintext; Random number generation
• ISSN: 2154-7491; 2154-7505
• DOI: 10.1109/ICACTE.2008.179

In this paper a session key based encryption system has been proposed and termed as "Session Key Based Manipulated Iteration Encryption Technique (SKBMIET)". A Key is created from the input. Generating different randomized Matrices forms the Key. The value of the generated is manipulated with the individual ASCII values of the plain text. After completion of this process all the different resultant ASCII values will be further converted into their corresponding binary values. Then a block of stream of bits (n) is taken as input, which is variable. The encryption process is operated on this binary block of different size, which is multiple of 64 bits. The block division process intends to generate the bigger blocks more than the smaller blocks; therefore, the total block-number remains within certain limit. The binary string of source is padded with zero (0) at the end till the stream-size meets the nearest multiple of 64bits. For the purpose of encryption rotate the block in right and left direction and make a group of two bits each and swapped with the group of last two bits. Make a group of four bits each and swapped with the group of last four bits. Further repeat the same process by taking 8, 16 and 32 bits in a group depending on the block size. Divide the newly arranged block into right and left parts of equal bits. Rotate left part one bit-left wise and Rotate-right part one bit-right wise. Rotate the total block in either direction to get the cipher text.