Constant Size Hierarchical Identity-Based Encryption Tightly Secure in the Full Model without Random Oracles

2013 ◽  
Author(s):  
Yijun Mao ◽  
Xi Zhang ◽  
Min-Rong Chen ◽  
Yiju Zhan
Keyword(s):  
Full Model ◽  
Random Oracles ◽  
Identity Based Encryption ◽  
Constant Size ◽  
Identity Based

scholarly journals Hierarchical Identity-Based Encryption with Constant-Size Private Keys

ETRI Journal ◽  
2012 ◽  
Vol 34 (1) ◽  
pp. 142-145 ◽  
Author(s):  
Leyou Zhang ◽  
Qing Wu ◽  
Yupu Hu
Keyword(s):  
Identity Based Encryption ◽  
Constant Size ◽  
Identity Based

Cryptanalysis of a Compact Anonymous HIBE with Constant Size Private Keys

2018 ◽  
Vol 62 (8) ◽  
pp. 1087-1091
Author(s):  
Xi-Jun Lin ◽  
Lin Sun ◽  
Haipeng Qu ◽  
He-Qun Xian
Keyword(s):  
Standard Model ◽  
Prime Order ◽  
Private Key ◽  
Identity Based Encryption ◽  
Constant Size ◽  
The Standard Model ◽  
Identity Based

AbstractRecently, Zhang et al. proposed a new anonymous hierarchical identity-based encryption (anonymous HIBE) over prime order groups to achieve both constant size private key and constant size ciphertext. Moreover, a double exponent technique was used to provide anonymity. They proved that their scheme is secure and anonymous against chosen plaintext attacks in the standard model. In this paper, we point out that their scheme is insecure.

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