Cryptanalysis on Two Pairing-Free Ciphertext-Policy Attribute-Based Encryption Schemes | Publication

Title	Cryptanalysis on Two Pairing-Free Ciphertext-Policy Attribute-Based Encryption Schemes
Creator	曾一凡 Tseng, Yi-Fan Huang, Jheng-Jia
Contributor	資科系
Date	2020-12
Date Issued	9-Dec-2021 16:12:28 (UTC+8)
Summary	Ciphertext-policy attribute-based encryption (CPABE) provides fine-grained access control, which is suitable for the modern data sharing model. Lots of CP-ABE schemes constructed over different mathematical structures, such as pairing groups, lattices, etc. Recently, Ding et al. and Wang et al. independently proposed two pairing-free CP-ABE schemes, using only elliptic curve cryptography. However, we found that their schemes are insecure. In this manuscript, we review their schemes and give the corresponding cryptanalysis. We show that, their schemes are vulnerable against collusion attacks.
Relation	2020 International Computer Symposium (ICS), National Cheng Kung University, pp.403-407
Type	conference
DOI	10.1109/ICS51289.2020.00086 https://doi.org/10.1109/ICS51289.2020.00086

dc.contributor	資科系
dc.creator (作者)	曾一凡
dc.creator (作者)	Tseng, Yi-Fan
dc.creator (作者)	Huang, Jheng-Jia
dc.date (日期)	2020-12
dc.date.accessioned	9-Dec-2021 16:12:28 (UTC+8)	-
dc.date.available	9-Dec-2021 16:12:28 (UTC+8)	-
dc.date.issued (上傳時間)	9-Dec-2021 16:12:28 (UTC+8)	-
dc.identifier.uri (URI)	http://nccur.lib.nccu.edu.tw/handle/140.119/138298	-
dc.description.abstract (摘要)	Ciphertext-policy attribute-based encryption (CPABE) provides fine-grained access control, which is suitable for the modern data sharing model. Lots of CP-ABE schemes constructed over different mathematical structures, such as pairing groups, lattices, etc. Recently, Ding et al. and Wang et al. independently proposed two pairing-free CP-ABE schemes, using only elliptic curve cryptography. However, we found that their schemes are insecure. In this manuscript, we review their schemes and give the corresponding cryptanalysis. We show that, their schemes are vulnerable against collusion attacks.
dc.format.extent	635826 bytes	-
dc.format.mimetype	application/pdf	-
dc.relation (關聯)	2020 International Computer Symposium (ICS), National Cheng Kung University, pp.403-407
dc.title (題名)	Cryptanalysis on Two Pairing-Free Ciphertext-Policy Attribute-Based Encryption Schemes
dc.type (資料類型)	conference
dc.doi.uri (DOI)	10.1109/ICS51289.2020.00086
dc.doi.uri (DOI)	https://doi.org/10.1109/ICS51289.2020.00086