[Resource Topic] 2008/288: How to Launch A Birthday Attack Against DES

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How to Launch A Birthday Attack Against DES

Authors: Zhengjun Cao


We present a birthday attack against DES. It is entirely based on the relationship L_{i+1}=R_{i} and the simple key schedule in DES. It requires about 2^{16} ciphertexts of the same R_{16}, encrypted by the same key K. We conjecture it has a computational complexity of 2^{48}. Since the requirement for the birthday attack is more accessible than that for Differential cryptanalysis, Linear cryptanalysis or Davies’ attack, it is of more practical significance.

ePrint: https://eprint.iacr.org/2008/288

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