Wang's sufficient conditions of MD5 are not sufficient

Jun Yajima; Takeshi Shimoyama

Paper 2005/263

Wang's sufficient conditions of MD5 are not sufficient

Jun Yajima and Takeshi Shimoyama

Abstract

In this paper, we report that the "sufficient conditions" of MD5 of the modification technique for the collision search algorithm described by Wang are not sufficient. In our analysis, we show at least 4 extra-conditions for the message modification in the first block and corrections of the several conditions which are correspond to the highest (32nd) bit of the sufficient conditions in the second block should be needed. And we show the new collision message which is completely different from the message pairs showed by Wang by using our extended sufficient conditions.

Metadata

Available format(s): PDF
Category: Secret-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Keywords: hash function MD5 Collision sufficient condition message modification
Contact author(s): jyajima @ labs fujitsu com
History: 2005-08-11: received
Short URL: https://ia.cr/2005/263
License: CC BY

BibTeX

@misc{cryptoeprint:2005/263,
      author = {Jun Yajima and Takeshi Shimoyama},
      title = {Wang's sufficient conditions of {MD5} are not sufficient},
      howpublished = {Cryptology {ePrint} Archive, Paper 2005/263},
      year = {2005},
      url = {https://eprint.iacr.org/2005/263}
}