Chosen-ciphertext secure proxy re-encryption
Proceedings of the 14th ACM conference on Computer and communications security
Type-Based Proxy Re-encryption and Its Construction
INDOCRYPT '08 Proceedings of the 9th International Conference on Cryptology in India: Progress in Cryptology
Chosen-Ciphertext Secure Proxy Re-encryption without Pairings
CANS '08 Proceedings of the 7th International Conference on Cryptology and Network Security
CCA-Secure Proxy Re-encryption without Pairings
Irvine Proceedings of the 12th International Conference on Practice and Theory in Public Key Cryptography: PKC '09
Conditional proxy re-encryption secure against chosen-ciphertext attack
Proceedings of the 4th International Symposium on Information, Computer, and Communications Security
Efficient Conditional Proxy Re-encryption with Chosen-Ciphertext Security
ISC '09 Proceedings of the 12th International Conference on Information Security
Anonymous Conditional Proxy Re-encryption without Random Oracle
ProvSec '09 Proceedings of the 3rd International Conference on Provable Security
Unidirectional chosen-ciphertext secure proxy re-encryption
PKC'08 Proceedings of the Practice and theory in public key cryptography, 11th international conference on Public key cryptography
Efficient conjunctive keyword search on encrypted data storage system
EuroPKI 2006 Proceedings of the Third European conference on Public Key Infrastructure: theory and Practice
Public key encryption with conjunctive field keyword search
WISA'04 Proceedings of the 5th international conference on Information Security Applications
Searchable encryption revisited: consistency properties, relation to anonymous IBE, and extensions
CRYPTO'05 Proceedings of the 25th annual international conference on Advances in Cryptology
Oblivious conjunctive keyword search
WISA'05 Proceedings of the 6th international conference on Information Security Applications
Unidirectional Chosen-Ciphertext Secure Proxy Re-Encryption
IEEE Transactions on Information Theory
Public key encryption with conjunctive keyword search and its extension to a multi-user system
Pairing'07 Proceedings of the First international conference on Pairing-Based Cryptography
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Recently Shao et al. proposed an interesting cryptographic primitive called proxy re-encryption with keyword search (PRES). The main novelty is simultaneously realizing the functionality of proxy re-encryption and keyword search in one primitive. In this paper, we further extend their research by introducing a new primitive: constrained single-hop unidirectional proxy re-encryption supporting conjunctive keywords search (CPRE-CKS). Our results are as following: (1) In Shao's PRES scheme, the proxy can re-encrypt all the second level ciphertext. While in our CPRE-CKS proposal, the proxy can only re-encrypt those second level ciphertexts which contain the corresponding keywords. (2) We give the definition and security model for CPRE-CKS, and propose a concrete scheme and prove its security. (3) On the way to construct a secure CPRE-CKS scheme, we found a flaw in the security proof of Hwang et al.'s public key encryption with conjunctive keyword search (PECK) scheme proposed in Pairing'07.