A Block Cipher Based Cryptosystem through Modified Forward Backward Overlapped Modulo Arithmetic Technique (MFBOMAT)
Journal Title: IOSR Journals (IOSR Journal of Computer Engineering) - Year 2013, Vol 13, Issue 1
Abstract
In this paper, a new Cryptosystem based on block cipher has been proposed where the encryption is done through Modified Forward Backward Overlapped Modulo Arithmetic Technique (MFBOMAT). The original message is considered as a stream of bits, which is then divided into a number of blocks, each containing n bits, where n is any one of 2, 4, 8, 16, 32, 64, 128, 256. The first and last blocks are then added where the modulus of addition is 2 n . The result replaces the last block (say N th block), first block remaining unchanged (Forward mode). In the next attempt the second and the N th block (the changed block) are added and the result replaces the second block(Backward mode).Again the second (the changed block) and the (N-1) th block are added and the result replaces the (N-1) th block (Forward mode).The modulo addition has been implemented in a very simple manner where the carry out of the MSB is discarded to get the result. The technique is applied in a cascaded manner by varying the block size from 2 to 256. The whole technique has been implemented by using a modulo subtraction technique for decryption.
Authors and Affiliations
Debajyoti Guha
The Impact of E-marketing on Commercial Banks in Harare, Zimbabwe (1994 -2014).
Abstract: The purpose of this study was to analyse the effects of e-marketing on commercial banks between 1994 and 2014. The researchers dwelt on the adoption of e-marketing services in the commercial banks. The adoption...
Optical Character Recognition (OCR) System
Abstract: In the running world, there is growing demand for the software systems to recognize characters incomputer system when information is scanned through paper documents as we know that we have number ofnewspa...
Performance Analysis of Aodv, Dsdv, Dsr and Lar Routing Protocols In Manet- A Review
Abstract: Mobile ad Hoc network is a collection of mobile nodes that communicate with each other using wireless links. A routing protocol is used to discover routes between nodes in order to facilitate communicatio...
A Novel Irreversible Transformation Scheme for Biometric Template Protection
Abstract: Modern biometric technologies claim to provide alternative solution to traditional authentication processes. Even though there are various advantages of biometric process, it is vulnerable to attacks which can...
Efficient and Accurate Target Sensor Tracking in Wireless Sensor Networks
Abstract: In the tracking scheme illustrated, where the sensors are deployed in a triangular fashion in a hexagonal mesh such that the hexagon is divided into a number of equilateral triangles. Where the technique is use...