[Resource Topic] 2007/101: Practical Password Recovery on an MD5 Challenge and Response

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Title:
Practical Password Recovery on an MD5 Challenge and Response

Authors: 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.

ePrint: https://eprint.iacr.org/2007/101

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