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Information Leakage of VGF2 Structure

Author

Listed:
  • Ting Cui
  • Chen-hui Jin
  • Ke-feng Huang

Abstract

The block cipher VGF2 was designed at Inscrypt 2009. It was based on a new variant of generalized Feistel structure. By checking the property of the linear permutation, we find a full round differential in VGF2 with probability 1. Since this differential cannot distinguish the correct unknown key from the wrong keys, we fail in launching a key-recovery attack on this structure. However, we may guess half part of the plaintext without calculating the key. And we notice that this weakness may cause insecurity in some special environments.

Suggested Citation

  • Ting Cui & Chen-hui Jin & Ke-feng Huang, 2013. "Information Leakage of VGF2 Structure," Mathematical Problems in Engineering, Hindawi, vol. 2013, pages 1-4, April.
    • Handle: RePEc:hin:jnlmpe:962342
    DOI: 10.1155/2013/962342
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