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Mobile Payment Security by Key Shuffle Mechanism in DES

  • V. B. Navya
  • R. Aparna
  • G. Bhaskar
Part of the Communications in Computer and Information Science book series (CCIS, volume 250)

Abstract

Wide spread use of handheld devices extend possibilities of using mobile devices as universal payment mode. However, some issues constrain the widespread acceptance of mobile payment; for example: privacy protection, limited capability of mobile devices, and limited bandwidth of wireless networks. Due to the fact that wireless channel is an open medium to intruders, encryption is a crucial process to assure secure message exchange in the mobile payment systems. Several standard symmetric cryptographic algorithms such as DES and AES are widely used to solve the problem of communication over the insecure wireless channel in mobile payment systems. But intruders and hackers are devising new methods to decrypt the data. The effective key length of the DES is 56 binary digits (bits) and the straight forward “work factor” of the algorithm is 256 (i.e., the number of keys that would have to be tried is 256 or approximately 7.6 × 1016 times), hence the intruders and hackers can easily cryptanalyze.

Keywords

M-commerce mobile payments key-shuffle permutation array DES 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • V. B. Navya
    • 1
  • R. Aparna
    • 1
  • G. Bhaskar
    • 1
  1. 1.Department of Computer ScienceSiddaganga Institute of TechnologyTumkurIndia

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