A Practical Public Key Cryptosystem Provably Secure Against Adaptive Chosen Ciphertext Attack
CRYPTO '98 Proceedings of the 18th Annual International Cryptology Conference on Advances in Cryptology
Secure Integration of Asymmetric and Symmetric Encryption Schemes
CRYPTO '99 Proceedings of the 19th Annual International Cryptology Conference on Advances in Cryptology
Key-Privacy in Public-Key Encryption
ASIACRYPT '01 Proceedings of the 7th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
SELS: a secure e-mail list service
Proceedings of the 2005 ACM symposium on Applied computing
Improved proxy re-encryption schemes with applications to secure distributed storage
ACM Transactions on Information and System Security (TISSEC)
ASIACCS '06 Proceedings of the 2006 ACM Symposium on Information, computer and communications security
Abuse Freedom in Access Control Schemes
AINA '06 Proceedings of the 20th International Conference on Advanced Information Networking and Applications - Volume 02
Towards a secure and interoperable DRM architecture
Proceedings of the ACM workshop on Digital rights management
Multi-Dimensional Range Query over Encrypted Data
SP '07 Proceedings of the 2007 IEEE Symposium on Security and Privacy
Chosen-ciphertext secure proxy re-encryption
Proceedings of the 14th ACM conference on Computer and communications security
Encryption schemes from bilinear maps
Encryption schemes from bilinear maps
Identity-Based Proxy Re-encryption
ACNS '07 Proceedings of the 5th international conference on Applied Cryptography and Network Security
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
Key-Private Proxy Re-encryption
CT-RSA '09 Proceedings of the The Cryptographers' Track at the RSA Conference 2009 on Topics in Cryptology
Securely obfuscating re-encryption
TCC'07 Proceedings of the 4th conference on Theory of cryptography
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
Secure multicast using proxy encryption
ICICS'05 Proceedings of the 7th international conference on Information and Communications Security
Privacy for public transportation
PET'06 Proceedings of the 6th international conference on Privacy Enhancing Technologies
Efficient unidirectional proxy re-encryption
AFRICACRYPT'10 Proceedings of the Third international conference on Cryptology in Africa
A public key cryptosystem and a signature scheme based on discrete logarithms
IEEE Transactions on Information Theory
Anonymous ID-based proxy re-encryption
ACISP'12 Proceedings of the 17th Australasian conference on Information Security and Privacy
Proxy re-encryption in a stronger security model extended from CT-RSA2012
CT-RSA'13 Proceedings of the 13th international conference on Topics in Cryptology
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In proxy re-encryption (PRE), a semi-trusted proxy can transform a ciphertext under the delegator's public key into another ciphertext that the delegatee can decrypt by his/her own private key. However, the proxy cannot access the plaintext. Due to its transformation property, proxy re-encryption can be used in many applications, such as encrypted email forwarding. Some of these applications require that the underlying PRE scheme is CCA-secure and key-private. However, to the best of our knowledge, none of the existing PRE schemes satisfy this security requirement in the standard model. In this paper, based on the 5-Extended Decision Bilinear Diffie-Hellman assumption and Decision Diffie-Hellman assumption, we propose the first such PRE scheme, which solves an open problem left by Ateniese et al. (2009).