IBE with tight security against selective opening and chosen-ciphertext attacks
| Autor: | Bao Li, Dingding Jia, Yamin Liu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Selective opening
Applied Mathematics Block (permutation group theory) 020206 networking & telecommunications 0102 computer and information sciences 02 engineering and technology 01 natural sciences Computer Science Applications Combinatorics 010201 computation theory & mathematics Ciphertext 0202 electrical engineering electronic engineering information engineering Key encapsulation Mathematics |
| Zdroj: | Designs, Codes and Cryptography. 88:1371-1400 |
| ISSN: | 1573-7586 0925-1022 |
| DOI: | 10.1007/s10623-020-00755-6 |
| Popis: | The simulation-based, selective opening and chosen-ciphertext ($$\mathsf {SIM}\text{- }\mathsf {SO}\text{- }\mathsf {CCA}$$) adversary runs in the multi-sender scenario, it may access to the decryption and user-secret key oracles, in addition to corrupt senders adaptively after seeing the ciphertext (hence it can obtain the encrypted messages together with the randomness). An $$\mathsf {SIM}\text{- }\mathsf {SO}\text{- }\mathsf {CCA}$$ secure $$\mathsf {IBE}$$ scheme aims to provide privacy for uncorrupted senders against such adversaries. In this work we present the first tightly $$\mathsf {SIM}\text{- }\mathsf {SO}\text{- }\mathsf {CCA}$$ secure identity-based encryption ($$\mathsf {IBE}$$). Our $$\mathsf {SIM}\text{- }\mathsf {SO}\text{- }\mathsf {CCA}$$ secure $$\mathsf {IBE}$$ employs an identity-based key encapsulation mechanism ($$\mathsf {IBKEM}$$) as a building block, concretely |
| Databáze: | OpenAIRE |
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