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Proceedings Paper

A cryptanalysis procedure of the data encryption standard
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Paper Abstract

In this paper an attack strategy on the Data Encryption Standard (DES) that is different from the existing ones is developed. The attack strategy is based on a theorem proved by the author, called LR theorem. The attack can be done by means of a personal computer, i.e. a Pentium IV based machine. Obviously, more information than a sample of plaintext and ciphertext is required. However, this additional requirement is reduced to a minimum of just 24 bits. The LR theorem uncovers 16 trapdoors of which 2 are of importance. With this knowledge, an attack on Triple-DES can be performed using the aforementioned personal computer. A simple solution to this kind of attack is proposed, preserving the complexity of the Triple-DES, 2112.

Paper Details

Date Published: 17 September 2005
PDF: 7 pages
Proc. SPIE 5915, Mathematics of Data/Image Coding, Compression, and Encryption VIII, with Applications, 591504 (17 September 2005); doi: 10.1117/12.620955
Show Author Affiliations
Victor Manuel Silva G., Instituto Politecnico Nacional (Mexico)


Published in SPIE Proceedings Vol. 5915:
Mathematics of Data/Image Coding, Compression, and Encryption VIII, with Applications
Mark S. Schmalz, Editor(s)

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