Recently, Au et al. proposed a practical hierarchical identity-based encryption (HIBE) scheme and a hierarchical identity-based signature (HIBS) scheme. In this paper, we point out that there exists security weakness both for their HIBE and HIBS scheme. Furthermore, based on q-ABDHE, we present a new HIBE scheme which is proved secure in the standard model and it is also efficient. Compared with all previous HIBE schemes, ciphertext size as well as decryption cost are independent of the hierarchy depth. Ciphertexts in our HIBE scheme are always just four group elements and decryption requires only two bilinear map computations.
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Xiaoming HU, Shangteng HUANG, Xun FAN, "Practical Hierarchical Identity Based Encryption Scheme without Random Oracles" in IEICE TRANSACTIONS on Fundamentals,
vol. E92-A, no. 6, pp. 1494-1499, June 2009, doi: 10.1587/transfun.E92.A.1494.
Abstract: Recently, Au et al. proposed a practical hierarchical identity-based encryption (HIBE) scheme and a hierarchical identity-based signature (HIBS) scheme. In this paper, we point out that there exists security weakness both for their HIBE and HIBS scheme. Furthermore, based on q-ABDHE, we present a new HIBE scheme which is proved secure in the standard model and it is also efficient. Compared with all previous HIBE schemes, ciphertext size as well as decryption cost are independent of the hierarchy depth. Ciphertexts in our HIBE scheme are always just four group elements and decryption requires only two bilinear map computations.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E92.A.1494/_p
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@ARTICLE{e92-a_6_1494,
author={Xiaoming HU, Shangteng HUANG, Xun FAN, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Practical Hierarchical Identity Based Encryption Scheme without Random Oracles},
year={2009},
volume={E92-A},
number={6},
pages={1494-1499},
abstract={Recently, Au et al. proposed a practical hierarchical identity-based encryption (HIBE) scheme and a hierarchical identity-based signature (HIBS) scheme. In this paper, we point out that there exists security weakness both for their HIBE and HIBS scheme. Furthermore, based on q-ABDHE, we present a new HIBE scheme which is proved secure in the standard model and it is also efficient. Compared with all previous HIBE schemes, ciphertext size as well as decryption cost are independent of the hierarchy depth. Ciphertexts in our HIBE scheme are always just four group elements and decryption requires only two bilinear map computations.},
keywords={},
doi={10.1587/transfun.E92.A.1494},
ISSN={1745-1337},
month={June},}
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TY - JOUR
TI - Practical Hierarchical Identity Based Encryption Scheme without Random Oracles
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1494
EP - 1499
AU - Xiaoming HU
AU - Shangteng HUANG
AU - Xun FAN
PY - 2009
DO - 10.1587/transfun.E92.A.1494
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E92-A
IS - 6
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - June 2009
AB - Recently, Au et al. proposed a practical hierarchical identity-based encryption (HIBE) scheme and a hierarchical identity-based signature (HIBS) scheme. In this paper, we point out that there exists security weakness both for their HIBE and HIBS scheme. Furthermore, based on q-ABDHE, we present a new HIBE scheme which is proved secure in the standard model and it is also efficient. Compared with all previous HIBE schemes, ciphertext size as well as decryption cost are independent of the hierarchy depth. Ciphertexts in our HIBE scheme are always just four group elements and decryption requires only two bilinear map computations.
ER -