Identity-Based Encryption Resilient to Continual Leakage Without Random Oracles

2019 ◽  
pp. 53-64
Author(s):  
Yuyan Guo ◽  
Mingming Jiang ◽  
Shimin Wei ◽  
Ming Xie ◽  
Mei Sun
Keyword(s):  
Random Oracles ◽  
Identity Based Encryption ◽  
Identity Based

Identity-Based Encryption with Random Oracles

2018 ◽  
pp. 215-227
Author(s):  
Fuchun Guo ◽  
Willy Susilo ◽  
Yi Mu
Keyword(s):  
Random Oracles ◽  
Identity Based Encryption ◽  
Identity Based

HIERARCHICAL IDENTITY-BASED PROXY RE-ENCRYPTION WITHOUT RANDOM ORACLES

2010 ◽  
Vol 21 (06) ◽  
pp. 1049-1063 ◽  
Author(s):  
YANLI REN ◽  
DAWU GU ◽  
SHUOZHONG WANG ◽  
XINPENGU ZHANG
Keyword(s):  
Identity Authentication ◽  
Public Key ◽  
Key Generation ◽  
Encryption Scheme ◽  
Number Of Solutions ◽  
Organizational Hierarchy ◽  
Private Key ◽  
Random Oracles ◽  
Identity Based Encryption ◽  
Identity Based

In a proxy re-encryption scheme, a semi-trusted proxy converts a ciphertext for Alice into a ciphertext for Bob without seeing the underlying plaintext. A number of solutions have been proposed in public key settings. Hierarchical identity-based cryptography is a generalization of identity-based encryption that mirrors an organizational hierarchy, which allows a root private key generator to distribute the workload by delegating private key generation and identity authentication to lower-level private key generators. In this paper, we propose a hierarchical identity-based proxy re-encryption (HIBPRE) scheme which achieves IND-PrID-CCA2 security without random oracles. This is the first HIBPRE scheme up to now, and our scheme satisfies unidirectionality, non-interactivity and permits multiple re-encryptions.

Identity-Based Encryption Without Random Oracles

2018 ◽  
pp. 229-247
Author(s):  
Fuchun Guo ◽  
Willy Susilo ◽  
Yi Mu
Keyword(s):  
Random Oracles ◽  
Identity Based Encryption ◽  
Identity Based

scholarly journals Efficient Selective Identity-Based Encryption Without Random Oracles

2010 ◽  
Vol 24 (4) ◽  
pp. 659-693 ◽  
Author(s):  
Dan Boneh ◽  
Xavier Boyen
Keyword(s):  
Random Oracles ◽  
Identity Based Encryption ◽  
Identity Based

A NEW CONSTRUCTION OF IDENTITY-BASED SIGNCRYPTION WITHOUT RANDOM ORACLES

2014 ◽  
Vol 25 (01) ◽  
pp. 1-23 ◽  
Author(s):  
JIA FAN ◽  
YULIANG ZHENG ◽  
XIAOHU TANG
Keyword(s):  
Construction Of Identity ◽  
Random Oracles ◽  
Identity Based Encryption ◽  
New Construction ◽  
Identity Based ◽  
Signcryption Scheme ◽  
Provably Secure

Identity-based signcryption is a primitive that combines the functions of identity-based encryption and identity-based signature. In this paper, we first attack two of the existing identity-based signcryption schemes which are claimed to be provably secure without random oracles. Then we construct a new identity-based signcryption scheme and proves its security without random oracles.

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