Conditional Proxy Re-Encryption Secure against Chosen-Ciphertext Attack

机译：条件代理重新加密可防止选择的密文攻击

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摘要

In a proxy re-encryption (PRE) system [4], a proxy, authorized by Alice, can convert a ciphertext for Alice into a ciphertext for Bob without seeing the underlying plaintext. PRE has found many practical applications requiring delegation. However, it is inadequate to handle scenarios where a fine-grained delegation is demanded. To overcome the limitation of existing PRE systems, we introduce the notion of conditional proxy re-encryption (C-PRE), whereby only ciphertext satisfying a specific condition set by Alice can be transformed by the proxy and then decrypted by Bob. We formalize its security model and propose an efficient C-PRE scheme, whose chosen-ciphertext security is proven under the 3-quotient bilinear Diffie-Hellman assumption. We further extend the construction to allow multiple conditions with a slightly higher overhead.

机译：在代理重新加密（PRE）系统[4]中，由Alice授权的代理可以将Alice的密文转换为Bob的密文，而不会看到底层的明文。 PRE已发现许多需要委托的实际应用。但是，这不足以处理需要精细委派的情况。为了克服现有PRE系统的局限性，我们引入了条件代理重新加密（C-PRE）的概念，即只有满足Alice特定条件的密文才能由代理转换，然后由Bob解密。我们对它的安全模型进行形式化并提出一种有效的C-PRE方案，其选择密文的安全性在3商双线性Diffie-Hellman假设下得到了证明。我们进一步扩展了构造，以允许多种条件，而开销略高。

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来源
《4th ACM symposium on information, computer and communications security 2009》|2009年|P.322-332|共11页
会议地点 Sydney(AU);Sydney(AU)
作者
Jian Weng; Robert H. Deng; Xuhua Ding; Cheng-Kang Chu; Junzuo Lai;
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作者单位

School of Information Systems Singapore Management University Singapore 178902 Dept. of Computer Science Jinan University Guangzhou 510632, China;

rnSchool of Information Systems Singapore Management University Singapore 178902;

rnSchool of Information Systems Singapore Management University Singapore 178902;

rnSchool of Information Systems Singapore Management University Singapore 178902;

rnDept. of Computer Science and Engineering Shanghai Jiao Tong University Shanghai 200240, China;

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会议组织
原文格式 PDF
正文语种 eng
中图分类安全信息论;
关键词
conditional proxy re-encryption; bilinear pairing; chosen-ciphertext security;

机译：有条件的代理重新加密；双线性配对；选择密文安全;

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专利

1. Chosen-ciphertext secure multi-hop identity-based conditional proxy re-encryption with constant-size ciphertexts [J] . Kaitai Liang, Cheng-Kang Chu, Xiao Tan, Theoretical computer science . 2014,第Null期

机译：恒定大小密文的选择密文安全多跳基于身份的条件代理重新加密
2. Chosen-ciphertext secure anonymous conditional proxy re-encryption with keyword search [J] . Liming Fang, Willy Susilo, Chunpeng Ge, Theoretical computer science . 2012,第Null期

机译：关键字搜索选择的密文安全匿名条件代理重新加密
3. Chosen-ciphertext secure bidirectional proxy broadcast re-encryption schemes [J] . Jin Sun, Yupu Hu International Journal of Information and Communication Technology . 2016,第4期

机译：选择密文的安全双向代理广播重加密方案
4. Conditional proxy re-encryption secure against chosen-ciphertext attack [C] . Jian Weng, Robert H. Deng, Xuhua Ding, Proceedings of the 4th International Symposium on Information, Computer, and Communications Security . 2009

机译：有条件的代理重新加密可防止选择的密文攻击
5. The Design of Public-Key Cryptosystems Resilient to Chosen-Ciphertext and Key-Leakage Attacks [D] . Segev, Gil. 2010

机译：能够抵抗所选密文和密钥泄漏攻击的公钥密码系统的设计
6. A Lattice-Based Homomorphic Proxy Re-Encryption Scheme with Strong Anti-Collusion for Cloud Computing [O] . Juyan Li, Zhiqi Qiao, Kejia Zhang, 2021

机译：一种基于格子的同性恋代理再加密方案具有云计算强的防串行
7. Chosen-ciphertext secure anonymous conditional proxy re-encryption with keyword search [O] . Fang Liming, Susilo Willy, Ge Chunpeng, 2012

机译：关键字搜索选择的密文安全匿名条件代理重新加密

Conditional Proxy Re-Encryption Secure against Chosen-Ciphertext Attack

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