Specialization and Subordination from Sampling: Lattice-based A(H)IBE in the Plain Model
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چکیده
We construct an Identity-Based Encryption (IBE) system without random oracles from hard problems on lattices. The system provides full ciphertext anonymity, and also extends to HIBE by properly randomizing lattice trapdoors used as private keys during delegation.
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تاریخ انتشار 2009