Identity-Based Encryption from the Weil Pairing
CRYPTO '01 Proceedings of the 21st Annual International Cryptology Conference on Advances in Cryptology
On Quorum Controlled Asymmetric Proxy Re-encryption
PKC '99 Proceedings of the Second International Workshop on Practice and Theory in Public Key Cryptography
A One Round Protocol for Tripartite Diffie-Hellman
ANTS-IV Proceedings of the 4th International Symposium on Algorithmic Number Theory
Attribute-based encryption for fine-grained access control of encrypted data
Proceedings of the 13th ACM conference on Computer and communications security
Ciphertext-Policy Attribute-Based Encryption
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
Provably secure ciphertext policy ABE
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
Key-Private Proxy Re-encryption
CT-RSA '09 Proceedings of the The Cryptographers' Track at the RSA Conference 2009 on Topics in Cryptology
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 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
ProvSec'10 Proceedings of the 4th international conference on Provable security
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In ciphertext policy attribute based encryption (ABE) schemes the sender selects an access structure and generates a ciphertext,which decryptors can get plaintext if he has certain set of secret key associate with his attributeswhich satisfies the access structure. On the other hand, many organisations already introduced standard identity based encryption (IBE) or public key encryption (PKE) where only a single recipient is specified at the time of encryption. To utilize the above schemes and to simplify the management of user's key, it is valuable to develop a proxy re-encryption schemes between ABE schemes and IBE schemes. In this paper we propose the first proxy re-encryption scheme, which can convert an ABE ciphertext to a ciphertext which is encrypted by IBE scheme. Using new proxy re-encryption scheme, some useful applications can be constructed. Furthermore, we prove the security in the standard model based on decisional bilinear Diffie-Hellman assumption.