| dc.contributor | 資科系 | |
| dc.creator (作者) | 曾一凡 | |
| dc.creator (作者) | Tseng, Yi-Fan | |
| dc.creator (作者) | Fan, Chun-I | |
| dc.creator (作者) | Lin, Chih-Wen | |
| dc.date (日期) | 2019-03 | |
| dc.date.accessioned | 2-Sep-2020 09:14:59 (UTC+8) | - |
| dc.date.available | 2-Sep-2020 09:14:59 (UTC+8) | - |
| dc.date.issued (上傳時間) | 2-Sep-2020 09:14:59 (UTC+8) | - |
| dc.identifier.uri (URI) | http://nccur.lib.nccu.edu.tw/handle/140.119/131408 | - |
| dc.description.abstract (摘要) | Ciphertext-policy attribute-based encryption (CP-ABE) is an access control mechanism where a data provider encrypts a secret message and then sends the ciphertext to the receivers according to the access policy which she/he decides. If the attributes of the receivers match the access policy, then they can decrypt the ciphertext. This paper shows a relation between CP-ABE and identity-based encryption (IBE), and presents a bi-directional conversion between an access structure and identities. By the proposed conversion, the CP-ABE scheme constructed from an IBE scheme will inherit the features, such as constant-size ciphertexts and anonymity, from the IBE scheme, and vice versa. It turns out that the proposed conversion also gives the first CP-ABE achieving access structures with wildcard and constant-size ciphertexts/private keys. Finally, we prove the CCA security for confidentiality and anonymity. | |
| dc.format.extent | 211897 bytes | - |
| dc.format.mimetype | application/pdf | - |
| dc.relation (關聯) | Journal of Universal Computer Science, Vol.25, No.3, pp.182-202 | |
| dc.subject (關鍵詞) | Attribute-Based Encryption ; Identity-Based Encryption ; Constant-Size Ciphertexts/Keys ; Hidden Access Policies | |
| dc.title (題名) | Provably Secure Ciphertext-Policy Attribute-Based Encryption from Identity-Based Encryption | |
| dc.type (資料類型) | article | |
