Paper 2002/019

Scream: a software-efficient stream cipher

Shai Halevi, Don Coppersmith, and Charanjit Jutla

Abstract

We report on the design of Scream, a new software-efficient stream cipher, which was designed to be a ``more secure SEAL''. Following SEAL, the design of Scream resembles in many ways a block-cipher design. The new cipher is roughly as fast as SEAL, but we believe that it offers a significantly higher security level. In the process of designing this cipher, we re-visit the SEAL design paradigm, exhibiting some tradeoffs and limitations.

Note: some typos in the pseudocode were corrected

Metadata
Available format(s)
PDF PS
Category
Secret-key cryptography
Publication info
Published elsewhere. A shorter version appears in the proceedings of FSE'02
Keywords
Stream ciphersBlock ciphersRound functionsSEAL
Contact author(s)
shaih @ watson ibm com
History
2002-06-05: last of 2 revisions
2002-02-16: received
See all versions
Short URL
https://ia.cr/2002/019
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2002/019,
      author = {Shai Halevi and Don Coppersmith and Charanjit Jutla},
      title = {Scream: a software-efficient stream cipher},
      howpublished = {Cryptology ePrint Archive, Paper 2002/019},
      year = {2002},
      note = {\url{https://eprint.iacr.org/2002/019}},
      url = {https://eprint.iacr.org/2002/019}
}
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