| Autor: |
Zhenhua Liu, Yaohui Liu, Yaqing Fan |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
IEEE Access, Vol 6, Pp 76381-76394 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
2169-3536 |
| DOI: |
10.1109/ACCESS.2018.2878527 |
| Popis: |
Considering the scenario of an electronic personal health record system, we put forward a new cryptographic concept called searchable attribute-based signcryption, which can support fine-grained access control, data privacy, data authenticity, and data searchability. Then, we establish the security models and construct a searchable attribute-based signcryption scheme with hybrid access policy. According to the proposed security model frameworks, our scheme is proven to achieve: 1) ciphertext indistinguishability under the decisional bilinear Diffie-Hellman exponent hardness assumption; 2) existential unforgeability based on the hardness assumption of computational Diffie-Hellman exponent problem; 3) selective security against chosen-keyword attack under the static assumption in the generic group model; and 4) keyword secrecy based on the one-way hardness of hash function. Furthermore, the experimental results show that the proposed scheme is efficient. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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