WCFB: A Wide Block Encryption for Large Data Sets

Andrey Jivsov

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Paper

WCFB: A Wide Block Encryption for Large Data Sets

In Proceedings of the 11th International Workshop on Security in Information Systems - Volume 0ICEIS, 75-82, 2014 , Lisbon, Portugal

Author: Andrey Jivsov

Affiliation: Symantec Corporation, United States

Keyword(s): encryption of large data set, updates to ciphertext, tweakable wide block encryption mode, caching/reuse of encrypted quantities, parallelism, PRP, PRF

Abstract: We define a model for applications that process large data sets in a way that enables additional optimizations of encryption operations. We show how to take advantage of identified characteristics with a new construction of a strong pseudo-random tweakable permutation, WCFB, that is built with 2m + 1 block cipher invocation for m cipherblocks, plus ≈ 5m XOR operations. WCFB mode has simple structure. WCFB can benefit from commonly occurring plaintext, such as encryption of an 0^nm sector, and repeated operations on the same wide block.

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Paper citation in several formats:

Jivsov, A. (2014). WCFB: A Wide Block Encryption for Large Data Sets. In Proceedings of the 11th International Workshop on Security in Information Systems (ICEIS 2014) - WOSIS; ISBN 978-989-758-031-4, SciTePress, pages 75-82. DOI: 10.5220/0004968900750082

@conference{wosis14,
author={Andrey Jivsov.},
title={WCFB: A Wide Block Encryption for Large Data Sets},
booktitle={Proceedings of the 11th International Workshop on Security in Information Systems (ICEIS 2014) - WOSIS},
year={2014},
pages={75-82},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004968900750082},
isbn={978-989-758-031-4},
}

TY - CONF

JO - Proceedings of the 11th International Workshop on Security in Information Systems (ICEIS 2014) - WOSIS
TI - WCFB: A Wide Block Encryption for Large Data Sets
SN - 978-989-758-031-4
AU - Jivsov, A.
PY - 2014
SP - 75
EP - 82
DO - 10.5220/0004968900750082
PB - SciTePress