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Paper 2009/321

Tweakable Enciphering Schemes From Stream Ciphers With IV

Palash Sarkar

Abstract

We present the first construction of a tweakable enciphering scheme from a stream cipher supporting an initialization vector. This construction can take advantage of the recent advances in hardware efficient stream ciphers to yield disk encryption systems with a very small hardware footprint. Such systems will be attractive for resource constrained devices.

Note: Note to revision dated 19 Dec 2012: One stream cipher call was found to be unnecessary and the scheme has been modified to drop this call. Note to revision dated 6 Dec 2012: There was a bug in the earlier version. The two hash calls in the Feistel network used the same key which caused a problem. This problem has been fixed and a few other typos have been corrected.

Metadata
Available format(s)
PDF
Category
Secret-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
stream cipher with IVtweakable encryptiondisk encryption
Contact author(s)
palash @ isical ac in
History
2012-12-19: last of 2 revisions
2009-07-01: received
See all versions
Short URL
https://ia.cr/2009/321
License
Creative Commons Attribution
CC BY
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