Attribute-based encryption scheme against key abuse based on OBDD access structure from lattice
In order to solve the key security problem in attribute-based encryption, a ciphertext policy attribute-based encryption scheme against key abuse was proposed based on the ring learning with error over ring and the access structure of ordered binary decision diagram.Firstly, two different institutio...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2023-01-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2023019/ |
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| Summary: | In order to solve the key security problem in attribute-based encryption, a ciphertext policy attribute-based encryption scheme against key abuse was proposed based on the ring learning with error over ring and the access structure of ordered binary decision diagram.Firstly, two different institutions were constructed to jointly generate the user’s secret key, which reduced the risk of key disclosure by institutions.Secondly, the user’s specific information was embedded in each secret key to realize the traceability of the key, and the access of illegal users and malicious users were avoided by maintaining the white list.In addition, the access structure of ordered binary decision diagram was adopted by the proposed scheme, and the positive and negative values of attributes on the basis of supporting attribute AND, OR and Threshold operation were increased.Analysis shows that the proposed scheme meets the distinguishable security of anti-collusion attack and chosen-plaintext attack, reduces the storage and computing overhead, and it is more practical than other schemes. |
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| ISSN: | 1000-436X |