Direct chosen ciphertext security from identity-based techniques
Proceedings of the 12th ACM conference on Computer and communications security
Improved proxy re-encryption schemes with applications to secure distributed storage
ACM Transactions on Information and System Security (TISSEC)
Chosen-ciphertext secure proxy re-encryption
Proceedings of the 14th ACM conference on Computer and communications security
Identity-Based Proxy Re-encryption
ACNS '07 Proceedings of the 5th international conference on Applied Cryptography and Network Security
Tracing Malicious Proxies in Proxy Re-encryption
Pairing '08 Proceedings of the 2nd international conference on Pairing-Based Cryptography
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
Key-Private Proxy Re-encryption
CT-RSA '09 Proceedings of the The Cryptographers' Track at the RSA Conference 2009 on Topics in Cryptology
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
Chosen-ciphertext secure bidirectional proxy re-encryption schemes without pairings
Information Sciences: an International Journal
Efficient identity-based encryption without random oracles
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Fuzzy identity-based encryption
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Proxy re-encryption systems for identity-based encryption
Pairing'07 Proceedings of the First international conference on Pairing-Based Cryptography
Identity-based proxy re-encryption without random oracles
ISC'07 Proceedings of the 10th international conference on Information Security
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Proxy re-encryption (PRE) allows a semi-trusted proxy to convert a ciphertext originally intended for a user into another ciphertext of the same message intended for another user, and the proxy, however, cannot learn anything about the message encrypted. In previous papers, in order to achieve the CCA2-security, a common method for constructing PRE schemes was to apply the paradigm of using strongly-unforgeable one-time signature which transforms a selective-identity, CPA-secure identity-based encryption (IBE) scheme into a CCA-secure cryptosystem. In this paper, we propose a direct design of the bidirectional CCA-secure PRE scheme, which makes a direct use of the underlying IBE structure and does not need any auxiliary signature mechanism. Our construction is efficient and suitable for further designing multi-user PRE schemes. Its security is proved on the base of the decisional bilinear Diffie-Hellman assumption in the standard model.