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
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
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 unidirectional proxy re-encryption
AFRICACRYPT'10 Proceedings of the Third international conference on Cryptology in Africa
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 is a cryptographic primitive enabling a proxy holding a re-encryption key to convert a ciphertext originally intended for Alice (delegator) into an encryption of the same message for Bob (delegatee). Proxy re-encryption is a useful tool, having many applications. However, we observe that the issue of re-encryption key leakage, where the delegatee acquires the re-encryption key from the proxy, has been neglected by virtually all of the existing work. Possession of the re-encryption key allows the delegatee to decrypt the delegator's ciphertexts by himself, without necessarily turning to the proxy for conversion, which may contradict the delegator's interest. In this work, we present a method to address this issue using trusted computing technology. Our proposal represents yet another application of trusted computing.