Paper 2008/445

Cryptanalysis of the Improved Cellular Message Encryption Algorithm

Thomas Chardin and Raphaël Marinier

Abstract

This paper analyzes the Improved Cellular Message Encryption Algorithm (CMEA-I) which is an improved version of the Telecommunication Industry Association's Cellular Message Encryption Algorithm (CMEA). We present a chosen-plaintext attack of CMEA-I which requires less than 850 plaintexts in its adaptive version. This demonstrates that the improvements made over CMEA are ineffective to thwart such attacks and confirms that the security of CMEA and its variants must be reconsidered from the beginning.

Note: First name of an author corrected.

Metadata
Available format(s)
PDF
Category
Secret-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
block cipherscryptanalysis
Contact author(s)
raphael marinier @ polytechnique edu
History
2008-10-20: revised
2008-10-20: received
See all versions
Short URL
https://ia.cr/2008/445
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2008/445,
      author = {Thomas Chardin and Raphaël Marinier},
      title = {Cryptanalysis of the Improved Cellular Message Encryption Algorithm},
      howpublished = {Cryptology ePrint Archive, Paper 2008/445},
      year = {2008},
      note = {\url{https://eprint.iacr.org/2008/445}},
      url = {https://eprint.iacr.org/2008/445}
}
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