How to Launch A Birthday Attack Against DES

Zhengjun Cao

Paper 2008/288

How to Launch A Birthday Attack Against DES

Zhengjun Cao

Abstract

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.

Metadata

Available format(s): PDF
Category: Secret-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Contact author(s): caoamss @ gmail com
History: 2008-07-18: revised; 2008-07-03: received; See all versions
Short URL: https://ia.cr/2008/288
License: CC BY

BibTeX

@misc{cryptoeprint:2008/288,
      author = {Zhengjun Cao},
      title = {How to Launch A Birthday Attack Against {DES}},
      howpublished = {Cryptology {ePrint} Archive, Paper 2008/288},
      year = {2008},
      url = {https://eprint.iacr.org/2008/288}
}