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Volume & Issue no: Volume 3, Issue 8, August 2014

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Title:
An Enhancement In International Data Encryption Algorithm For Increasing Security
Author Name:
Ms Snehal Patil , Prof.Vrunda Bhusari
Abstract:
ABSTRACT There are many security algorithms that are used for security purpose. IDEA is one of them. The block cipher IDEA operates with 64-bit plaintext and cipher text blocks and is controlled by a 128-bit key. The fundamental innovation in the design of this algorithm is the use of operations from three different algebraic groups. The algorithm structure has been chosen such that, with the exception that different key sub-blocks are used, the encryption process is identical to the decryption process. The drawback of IDEA is that the large numbers of weak keys were found in IDEA (International Data Encryption Algorithm). Also a new attack on round 6 of IDEA has been detected. This paper describes the design and implementation of international data encryption algorithm (IDEA) protocol, it operates on 64 bit plaintext and also the size of the key has been increased from 128 bits to 256 bits. This increased key size will increase the complexity of the algorithm. To increase the amount of diffusion two MA blocks (multiplicative additive block) are used in a single round of IDEA as compared to one MA block used previously in a single round also use the 12 rounds instead of 8 rounds. With these modifications in the proposed algorithm will increase the cryptographic strength. Keywords:- DES,IDEA,MA,S-IDEA etc
Cite this article:
Ms Snehal Patil , Prof.Vrunda Bhusari , " An Enhancement In International Data Encryption Algorithm For Increasing Security" , International Journal of Application or Innovation in Engineering & Management (IJAIEM) , Volume 3, Issue 8, August 2014 , pp. 064-070 , ISSN 2319 - 4847.
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