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Mediated Hierarchical Identity-Based Combined Public Key Schemes

Mediated Hierarchical Identity-Based Combined Public Key Schemes,10.1109/IITSI.2010.20,Pingjian Wang,Jingqiang Lin,Jiwu Jing,Yongquan Xie

Mediated Hierarchical Identity-Based Combined Public Key Schemes  
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This paper presents the mediated hierarchical identity-based combined public key (mHIB-CPK) scheme by applying the concept of mediated hierarchical identity-based encryption (mHIBE) [1] to identity-based combined public key (IB-CPK) [2], which is an identity-based encryption (IBE) [3] scheme compatible with ElGamal [4] and other algorithms based on discrete logarithm problem (on prime fields or elliptic curves, such as, [5], [6]). Besides the advantages from mHIBE (hierarchical key generation and efficient revocation) and IBCPK (compatible with popular public key algorithms), mHIBCPK prevents conspiracy attacks on IB-CPK [7], making it more practicable for large-scale users.
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