IEICE TRANSACTIONS on Fundamentals
Authorization-Limited Transformation-Free Proxy Cryptosystems and Their Security Analyses
Summary :
In this paper authorization-limited transformation-free proxy cryptosystems (AL-TFP systems) are studied. It is a modification of the original proxy cryptosystem introduced by Mambo et al.[8] in which a ciphertext transformation by the original decryptor is necessary, and also a modification of the delegated decryption system proposed by Mu et al.[10]. In both systems proposed in [8] and [10], the original decryptors have to trust their proxies completely. The AL-TFP system allows the proxy decryptor to do decryption directly without any ciphertext transformation from the original decryptor, so that it can release the original decryptor more efficiently from a large amount of decrypting operations. Moreover, the original decryptor's privacy can be protected efficiently because the authority of proxy decryptor is limited to his duty and valid period. An active identity-based and a directory-based AL-TFP systems from pairings are proposed. Furthermore, an application of directory-based AL-TFP system to electronic commerce is also described. The securities of our schemes introduced are based on the BDH assumption.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E89-A No.1 pp.106-114
- Publication Date
- 2006/01/01
- Publicized
- Online ISSN
- 1745-1337
- DOI
- 10.1093/ietfec/e89-a.1.106
- Type of Manuscript
- Special Section PAPER (Special Section on Cryptography and Information Security)
- Category
- Protocol
Authors
Keyword
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Lihua WANG, Zhenfu CAO, Takeshi OKAMOTO, Ying MIAO, Eiji OKAMOTO, "Authorization-Limited Transformation-Free Proxy Cryptosystems and Their Security Analyses" in IEICE TRANSACTIONS on Fundamentals,
vol. E89-A, no. 1, pp. 106-114, January 2006, doi: 10.1093/ietfec/e89-a.1.106.
Abstract: In this paper authorization-limited transformation-free proxy cryptosystems (AL-TFP systems) are studied. It is a modification of the original proxy cryptosystem introduced by Mambo et al.[8] in which a ciphertext transformation by the original decryptor is necessary, and also a modification of the delegated decryption system proposed by Mu et al.[10]. In both systems proposed in [8] and [10], the original decryptors have to trust their proxies completely. The AL-TFP system allows the proxy decryptor to do decryption directly without any ciphertext transformation from the original decryptor, so that it can release the original decryptor more efficiently from a large amount of decrypting operations. Moreover, the original decryptor's privacy can be protected efficiently because the authority of proxy decryptor is limited to his duty and valid period. An active identity-based and a directory-based AL-TFP systems from pairings are proposed. Furthermore, an application of directory-based AL-TFP system to electronic commerce is also described. The securities of our schemes introduced are based on the BDH assumption.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e89-a.1.106/_p
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@ARTICLE{e89-a_1_106,
author={Lihua WANG, Zhenfu CAO, Takeshi OKAMOTO, Ying MIAO, Eiji OKAMOTO, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Authorization-Limited Transformation-Free Proxy Cryptosystems and Their Security Analyses},
year={2006},
volume={E89-A},
number={1},
pages={106-114},
abstract={In this paper authorization-limited transformation-free proxy cryptosystems (AL-TFP systems) are studied. It is a modification of the original proxy cryptosystem introduced by Mambo et al.[8] in which a ciphertext transformation by the original decryptor is necessary, and also a modification of the delegated decryption system proposed by Mu et al.[10]. In both systems proposed in [8] and [10], the original decryptors have to trust their proxies completely. The AL-TFP system allows the proxy decryptor to do decryption directly without any ciphertext transformation from the original decryptor, so that it can release the original decryptor more efficiently from a large amount of decrypting operations. Moreover, the original decryptor's privacy can be protected efficiently because the authority of proxy decryptor is limited to his duty and valid period. An active identity-based and a directory-based AL-TFP systems from pairings are proposed. Furthermore, an application of directory-based AL-TFP system to electronic commerce is also described. The securities of our schemes introduced are based on the BDH assumption.},
keywords={},
doi={10.1093/ietfec/e89-a.1.106},
ISSN={1745-1337},
month={January},}
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TY - JOUR
TI - Authorization-Limited Transformation-Free Proxy Cryptosystems and Their Security Analyses
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 106
EP - 114
AU - Lihua WANG
AU - Zhenfu CAO
AU - Takeshi OKAMOTO
AU - Ying MIAO
AU - Eiji OKAMOTO
PY - 2006
DO - 10.1093/ietfec/e89-a.1.106
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E89-A
IS - 1
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - January 2006
AB - In this paper authorization-limited transformation-free proxy cryptosystems (AL-TFP systems) are studied. It is a modification of the original proxy cryptosystem introduced by Mambo et al.[8] in which a ciphertext transformation by the original decryptor is necessary, and also a modification of the delegated decryption system proposed by Mu et al.[10]. In both systems proposed in [8] and [10], the original decryptors have to trust their proxies completely. The AL-TFP system allows the proxy decryptor to do decryption directly without any ciphertext transformation from the original decryptor, so that it can release the original decryptor more efficiently from a large amount of decrypting operations. Moreover, the original decryptor's privacy can be protected efficiently because the authority of proxy decryptor is limited to his duty and valid period. An active identity-based and a directory-based AL-TFP systems from pairings are proposed. Furthermore, an application of directory-based AL-TFP system to electronic commerce is also described. The securities of our schemes introduced are based on the BDH assumption.
ER -
English
