IEICE TRANSACTIONS on Fundamentals
A Straight-Line Extractable Non-malleable Commitment Scheme
Summary :
Non-malleability is an important security property of commitment schemes. The property means security against the man-in-the-middle attack, and it is defined and proved in the simulation paradigm using the corresponding simulator. Many known non-malleable commitment schemes have the common drawback that their corresponding simulators do not work in a straight-line manner, requires rewinding of the adversary. Due to this fact, such schemes are proved non-malleable only in the stand-alone cases. In the multiple-instances setting, i.e., when the scheme is performed concurrently with many instances of itself, such schemes cannot be proved non-malleable. The paper shows an efficient commitment scheme proven to be non-malleable even in the multiple-instances setting, based on the KEA1 and DDH assumptions. Our scheme has a simulator that works in a straight-line manner by using the KEA1-extractor instead of the rewinding strategy.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E90-A No.7 pp.1384-1394
- Publication Date
- 2007/07/01
- Publicized
- Online ISSN
- 1745-1337
- DOI
- 10.1093/ietfec/e90-a.7.1384
- Type of Manuscript
- PAPER
- Category
- Information Security
Authors
Keyword
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Seiko ARITA, "A Straight-Line Extractable Non-malleable Commitment Scheme" in IEICE TRANSACTIONS on Fundamentals,
vol. E90-A, no. 7, pp. 1384-1394, July 2007, doi: 10.1093/ietfec/e90-a.7.1384.
Abstract: Non-malleability is an important security property of commitment schemes. The property means security against the man-in-the-middle attack, and it is defined and proved in the simulation paradigm using the corresponding simulator. Many known non-malleable commitment schemes have the common drawback that their corresponding simulators do not work in a straight-line manner, requires rewinding of the adversary. Due to this fact, such schemes are proved non-malleable only in the stand-alone cases. In the multiple-instances setting, i.e., when the scheme is performed concurrently with many instances of itself, such schemes cannot be proved non-malleable. The paper shows an efficient commitment scheme proven to be non-malleable even in the multiple-instances setting, based on the KEA1 and DDH assumptions. Our scheme has a simulator that works in a straight-line manner by using the KEA1-extractor instead of the rewinding strategy.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e90-a.7.1384/_p
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@ARTICLE{e90-a_7_1384,
author={Seiko ARITA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A Straight-Line Extractable Non-malleable Commitment Scheme},
year={2007},
volume={E90-A},
number={7},
pages={1384-1394},
abstract={Non-malleability is an important security property of commitment schemes. The property means security against the man-in-the-middle attack, and it is defined and proved in the simulation paradigm using the corresponding simulator. Many known non-malleable commitment schemes have the common drawback that their corresponding simulators do not work in a straight-line manner, requires rewinding of the adversary. Due to this fact, such schemes are proved non-malleable only in the stand-alone cases. In the multiple-instances setting, i.e., when the scheme is performed concurrently with many instances of itself, such schemes cannot be proved non-malleable. The paper shows an efficient commitment scheme proven to be non-malleable even in the multiple-instances setting, based on the KEA1 and DDH assumptions. Our scheme has a simulator that works in a straight-line manner by using the KEA1-extractor instead of the rewinding strategy.},
keywords={},
doi={10.1093/ietfec/e90-a.7.1384},
ISSN={1745-1337},
month={July},}
Copy
TY - JOUR
TI - A Straight-Line Extractable Non-malleable Commitment Scheme
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1384
EP - 1394
AU - Seiko ARITA
PY - 2007
DO - 10.1093/ietfec/e90-a.7.1384
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E90-A
IS - 7
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - July 2007
AB - Non-malleability is an important security property of commitment schemes. The property means security against the man-in-the-middle attack, and it is defined and proved in the simulation paradigm using the corresponding simulator. Many known non-malleable commitment schemes have the common drawback that their corresponding simulators do not work in a straight-line manner, requires rewinding of the adversary. Due to this fact, such schemes are proved non-malleable only in the stand-alone cases. In the multiple-instances setting, i.e., when the scheme is performed concurrently with many instances of itself, such schemes cannot be proved non-malleable. The paper shows an efficient commitment scheme proven to be non-malleable even in the multiple-instances setting, based on the KEA1 and DDH assumptions. Our scheme has a simulator that works in a straight-line manner by using the KEA1-extractor instead of the rewinding strategy.
ER -
English
