Cryptology ePrint Archive: Report 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.

Category / Keywords: secret-key cryptography / stream cipher with IV, tweakable encryption, disk encryption

Date: received 30 Jun 2009, last revised 19 Dec 2012

Contact author: palash at isical ac in

Available format(s): PDF | BibTeX Citation

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.

Version: 20121219:120531 (All versions of this report)

Short URL: ia.cr/2009/321

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