Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
Identity-Based Encryption from the Weil Pairing
SIAM Journal on Computing
Efficient Algorithms for Pairing-Based Cryptosystems
CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on Advances in Cryptology
Efficient revocation and threshold pairing based cryptosystems
Proceedings of the twenty-second annual symposium on Principles of distributed computing
Fine-grained control of security capabilities
ACM Transactions on Internet Technology (TOIT)
EUROCRYPT'91 Proceedings of the 10th annual international conference on Theory and application of cryptographic techniques
Certificate-based encryption and the certificate revocation problem
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
Simple identity-based cryptography with mediated RSA
CT-RSA'03 Proceedings of the 2003 RSA conference on The cryptographers' track
On the security of certificateless signature schemes from asiacrypt 2003
CANS'05 Proceedings of the 4th international conference on Cryptology and Network Security
CBE from CL-PKE: a generic construction and efficient schemes
PKC'05 Proceedings of the 8th international conference on Theory and Practice in Public Key Cryptography
Chosen-ciphertext security of multiple encryption
TCC'05 Proceedings of the Second international conference on Theory of Cryptography
Certificateless public key encryption without pairing
ISC'05 Proceedings of the 8th international conference on Information Security
ASIACCS '07 Proceedings of the 2nd ACM symposium on Information, computer and communications security
Security Mediated Certificateless Signatures
ACNS '07 Proceedings of the 5th international conference on Applied Cryptography and Network Security
General Certificateless Encryption and Timed-Release Encryption
SCN '08 Proceedings of the 6th international conference on Security and Cryptography for Networks
IWSEC'07 Proceedings of the Security 2nd international conference on Advances in information and computer security
A provably secure ring signature scheme in certificateless cryptography
ProvSec'07 Proceedings of the 1st international conference on Provable security
Self-generated-certificate public key encryption without pairing and its application
Information Sciences: an International Journal
Token-controlled public key encryption in the standard model
ISC'07 Proceedings of the 10th international conference on Information Security
Server-aided signatures verification secure against collusion attack
Information Security Tech. Report
Leakage-resilient certificateless public key encryption
Proceedings of the first ACM workshop on Asia public-key cryptography
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We introduce the notion of security-mediated certificateless (SMC) cryptography. This allows more lightweight versions of mediated cryptography while maintaining the ability for instantaneous revocation of keys. Moreover, our solutions avoid key escrow, which has been used in all previous mediated cryptography algorithms. We provide a model of security against a fully-adaptive chosen ciphertext attacker, who may be a rogue key generation centre or any coalition of rogue users. We present a generic construction and also a concrete algorithm based on bilinear pairings. Our concrete scheme is more efficient than the identity-based mediated encryption scheme of Baek and Zheng in PKC 2004 which is provably secure in a comparable security model. In addition, our proposals can be easily extended to support distributed security mediators.