Paper 2007/101 Original: eprint.iacr.org/2007/101 ↗

Practical Password Recovery on an MD5 Challenge and Response

Yu Sasaki
Go Yamamoto
Kazumaro Aoki
Abstract

This paper shows an attack against APOP protocol which is a challenge-and-response protocol. We utilize the Wang's attack to make collisions in MD5, and apply it to APOP protocol. We confirmed that the first 3 octets of secret key can be recovered by several hundred queries under the man-in-the-middle environment.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Preprint.
History
2007-03-22: last updated
2007-03-22: published
Short URL
https://ia.cr/2007/101
License
https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2007/101,
      author = {Yu Sasaki and Go Yamamoto and Kazumaro Aoki},
      title = {Practical Password Recovery on an MD5 Challenge and Response},
      howpublished = {Cryptology {ePrint} Archive, Paper 2007/101},
      year = {2007},
      url = {https://eprint.iacr.org/2007/101}
}
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