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| Title: | 具有寬鬆黑盒追蹤性的子集謂詞加密
Subset predicate encryption with relaxed black-box traceability |
| Authors: | 楊之岑
Yang, Chih-Tsen |
| Contributors: | 曾一凡
楊之岑
Yang, Chih-Tsen |
| Keywords: | 屬性加密
叛徒追蹤
子集謂詞加密
Attribute-Based Encryption
Traitor Tracing
Subset Predicate Encryption |
| Date: | 2024 |
| Issue Date: | 2024-08-05 12:46:14 (UTC+8) |
| Abstract: | 在當今網路技術高度發達的時代，資料安全至關重要，對加密資料實現細粒度訪問控制是一項挑戰。基於屬性加密是常用的解決方案，然而隨著屬性的增多，此類方案中的訪問結構變得越來越複雜，在這種情況下，使用邏輯運算符如 “And” 或 “Or” 全面制定訪問策略變得困難，且在解密時需耗費龐大的計算成本，此外，隨著能夠訪問密文的用戶數量增加，惡意用戶可能會共謀做出盜版解碼器，並通過出售盜版解碼器以牟取暴利。為了解決這些問題，本篇論文提出了一種利用子集謂詞加密和寬鬆黑盒追踪的新方法，此方法不僅實現了細粒度訪問控制，還有效防止叛徒行為，一但叛徒出現，該方法能夠找出誰是叛徒。
In today's highly advanced network technology, data security is paramount, and achieving fine-grained access control for encrypted data is a challenge. Attribute-based encryption is a common solution, but as the number of attributes increases, the access structure in such schemes becomes more complex, making it difficult to fully formulate access policies using logical operators such as $And$ or $Or$. This complexity results in computationally expensive decryption processes. Additionally, as the number of users with access to ciphertext increases, the risk of malicious users colluding to create pirated decoders and profit from selling them also increases. To address these issues, this manuscript proposes a new approach that uses subset predicate encryption and relaxed black-box tracing. This approach not only implements fine-grained access control but also effectively prevents the emergence of traitors and identifies them if they appear. |
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| Description: | 碩士
國立政治大學
資訊科學系
111753155 |
| Source URI: | http://thesis.lib.nccu.edu.tw/record/#G0111753155 |
| Data Type: | thesis |
| Appears in Collections: | [資訊科學系] 學位論文
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