IEICE TRANSACTIONS on Fundamentals
Generalization and Extension of XEX* Mode
Summary :
This paper describes an extension of XEX* mode, which is a method to convert a block cipher into a tagged tweakable block cipher, a notion introduced by Rogaway in 2004 as an extension of the tweakable block cipher by Liskov et al. Our extension attaches an additional encryption function to the original XEX*, which has some limitation but is slightly faster than the encryption implemented by XEX*. We prove our scheme's security in a general form, where the offset function, a key component of our construction, is not restricted to the one used by XEX*. We also provide some applications of our result, in particular to OCB 2.0, an authenticated encryption based on XEX*.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E92-A No.2 pp.517-524
- Publication Date
- 2009/02/01
- Publicized
- Online ISSN
- 1745-1337
- DOI
- 10.1587/transfun.E92.A.517
- Type of Manuscript
- PAPER
- Category
- Cryptography and Information Security
Authors
Keyword
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Kazuhiko MINEMATSU, Toshiyasu MATSUSHIMA, "Generalization and Extension of XEX* Mode" in IEICE TRANSACTIONS on Fundamentals,
vol. E92-A, no. 2, pp. 517-524, February 2009, doi: 10.1587/transfun.E92.A.517.
Abstract: This paper describes an extension of XEX* mode, which is a method to convert a block cipher into a tagged tweakable block cipher, a notion introduced by Rogaway in 2004 as an extension of the tweakable block cipher by Liskov et al. Our extension attaches an additional encryption function to the original XEX*, which has some limitation but is slightly faster than the encryption implemented by XEX*. We prove our scheme's security in a general form, where the offset function, a key component of our construction, is not restricted to the one used by XEX*. We also provide some applications of our result, in particular to OCB 2.0, an authenticated encryption based on XEX*.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E92.A.517/_p
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@ARTICLE{e92-a_2_517,
author={Kazuhiko MINEMATSU, Toshiyasu MATSUSHIMA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Generalization and Extension of XEX* Mode},
year={2009},
volume={E92-A},
number={2},
pages={517-524},
abstract={This paper describes an extension of XEX* mode, which is a method to convert a block cipher into a tagged tweakable block cipher, a notion introduced by Rogaway in 2004 as an extension of the tweakable block cipher by Liskov et al. Our extension attaches an additional encryption function to the original XEX*, which has some limitation but is slightly faster than the encryption implemented by XEX*. We prove our scheme's security in a general form, where the offset function, a key component of our construction, is not restricted to the one used by XEX*. We also provide some applications of our result, in particular to OCB 2.0, an authenticated encryption based on XEX*.},
keywords={},
doi={10.1587/transfun.E92.A.517},
ISSN={1745-1337},
month={February},}
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TY - JOUR
TI - Generalization and Extension of XEX* Mode
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 517
EP - 524
AU - Kazuhiko MINEMATSU
AU - Toshiyasu MATSUSHIMA
PY - 2009
DO - 10.1587/transfun.E92.A.517
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E92-A
IS - 2
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - February 2009
AB - This paper describes an extension of XEX* mode, which is a method to convert a block cipher into a tagged tweakable block cipher, a notion introduced by Rogaway in 2004 as an extension of the tweakable block cipher by Liskov et al. Our extension attaches an additional encryption function to the original XEX*, which has some limitation but is slightly faster than the encryption implemented by XEX*. We prove our scheme's security in a general form, where the offset function, a key component of our construction, is not restricted to the one used by XEX*. We also provide some applications of our result, in particular to OCB 2.0, an authenticated encryption based on XEX*.
ER -
English
