基于可聚合PVSS和联盟链的密钥可公开验证MA-CP-ABE方案
TP309%TP393; 针对基于门限的多机构密文策略属性基加密(MA-CP-ABE)存在属性颁发机构(AA)不可信、属性私钥正确性无法公开验证等问题,提出了一种基于可聚合PVSS和联盟链的密钥可公开验证MA-CP-ABE方案.基于ElGamal改进可聚合PVSS算法,实现系统主密钥分发的可公开验证;基于双线性映射和ElGamal加密,构造MA-CP-ABE属性私钥可公开验证方法,实现属性私钥及其子份额密文条件下的可公开验证;基于联盟链提出密钥可公开验证MA-CP-ABE方案,通过联盟链保证验证参数可信,通过智能合约实现自动化验证.正确性、机密性、鲁棒性和活性等分析表明,当总AA数量为n、门限...
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| Published in | 通信学报 Vol. 45; no. 8; pp. 258 - 270 |
|---|---|
| Main Authors | , |
| Format | Journal Article |
| Language | Chinese |
| Published |
西北农林科技大学信息工程学院,陕西 杨凌 712100
01.08.2024
陕西省农业信息智能感知与分析工程技术研究中心,陕西 杨凌 712100 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1000-436X |
| DOI | 10.11959/j.issn.1000-436x.2024139 |
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| Abstract | TP309%TP393; 针对基于门限的多机构密文策略属性基加密(MA-CP-ABE)存在属性颁发机构(AA)不可信、属性私钥正确性无法公开验证等问题,提出了一种基于可聚合PVSS和联盟链的密钥可公开验证MA-CP-ABE方案.基于ElGamal改进可聚合PVSS算法,实现系统主密钥分发的可公开验证;基于双线性映射和ElGamal加密,构造MA-CP-ABE属性私钥可公开验证方法,实现属性私钥及其子份额密文条件下的可公开验证;基于联盟链提出密钥可公开验证MA-CP-ABE方案,通过联盟链保证验证参数可信,通过智能合约实现自动化验证.正确性、机密性、鲁棒性和活性等分析表明,当总AA数量为n、门限值为t、恶意AA数量不超过t-1时,所提方案能够保证属性私钥的正确分发,且系统主密钥初始化的通信开销复杂度为O(tn). |
|---|---|
| AbstractList | TP309%TP393; 针对基于门限的多机构密文策略属性基加密(MA-CP-ABE)存在属性颁发机构(AA)不可信、属性私钥正确性无法公开验证等问题,提出了一种基于可聚合PVSS和联盟链的密钥可公开验证MA-CP-ABE方案.基于ElGamal改进可聚合PVSS算法,实现系统主密钥分发的可公开验证;基于双线性映射和ElGamal加密,构造MA-CP-ABE属性私钥可公开验证方法,实现属性私钥及其子份额密文条件下的可公开验证;基于联盟链提出密钥可公开验证MA-CP-ABE方案,通过联盟链保证验证参数可信,通过智能合约实现自动化验证.正确性、机密性、鲁棒性和活性等分析表明,当总AA数量为n、门限值为t、恶意AA数量不超过t-1时,所提方案能够保证属性私钥的正确分发,且系统主密钥初始化的通信开销复杂度为O(tn). |
| Abstract_FL | To address challenges associated with threshold-based multi-authority ciphertext-policy attribute-based encryp-tion(MA-CP-ABE),such as untrusted attribute authorities(AA)and the inability to verify the correctness of attribute pri-vate keys publicly,a key public verifiable MA-CP-ABE scheme based on aggregatable publicly verifiable secret sharing(PVSS)and consortium blockchain was proposed.An aggregatable PVSS algorithm was improved based on ElGamal,which enabled the public verifiability of the system master key distribution.A publicly verifiable method for MA-CP-ABE attribute private keys was constructed based on bilinear maps and ElGamal encryption,enabling the public verifi-ability of attribute private keys and their shares in ciphertext conditions.A key public verifiable MA-CP-ABE scheme was proposed based on a consortium blockchain,ensuring the trustworthiness of verification parameters through the con-sortium blockchain and achieving automated verification via smart contracts.The analysis of correctness,confidentiality,robustness,and liveness indicates that when the total number of AA is n,the threshold value is t,and the number of mali-cious AA is not more than t-1,the scheme can ensure the correct distribution of attribute private keys,and the communi-cation overhead complexity of the system master key initialization is O(tn). |
| Author | 景旭 蒋炎 |
| AuthorAffiliation | 西北农林科技大学信息工程学院,陕西 杨凌 712100;陕西省农业信息智能感知与分析工程技术研究中心,陕西 杨凌 712100 |
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| Author_FL | JIANG Yan JING Xu |
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| Keywords | DKG 联盟链 PVSS MA-CP-ABE 分布式密钥生成 多机构密文策略属性基加密 consortium blockchain 可公开验证秘密共享 |
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| Title | 基于可聚合PVSS和联盟链的密钥可公开验证MA-CP-ABE方案 |
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