Paper 2002/139

Reaction Attacks on Public Key Cryptosystems Based on the Word Problem

Maria Isabel Gonzalez Vasco and Rainer Steinwandt

Abstract

Wagner and Magyarik outlined a general construction for public key cryptosystems based on the hardness of the word problem for finitely presented groups. At the same time, they gave a specific example of such a system. We prove that their approach is vulnerable to so-called reaction attacks, namely, it is possible to retrieve the private key just by watching the performance of a legitimate recipient.

Metadata
Available format(s)
PS
Category
Public-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
word problemreaction attacks
Contact author(s)
mvasco @ orion ciencias uniovi es
History
2002-09-12: received
Short URL
https://ia.cr/2002/139
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2002/139,
      author = {Maria Isabel Gonzalez Vasco and Rainer Steinwandt},
      title = {Reaction Attacks on Public Key Cryptosystems Based on the Word Problem},
      howpublished = {Cryptology ePrint Archive, Paper 2002/139},
      year = {2002},
      note = {\url{https://eprint.iacr.org/2002/139}},
      url = {https://eprint.iacr.org/2002/139}
}
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