Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
Random oracles are practical: a paradigm for designing efficient protocols
CCS '93 Proceedings of the 1st ACM conference on Computer and communications security
Efficient Identity Based Signature Schemes Based on Pairings
SAC '02 Revised Papers from the 9th Annual International Workshop on Selected Areas in Cryptography
Threshold Ring Signatures and Applications to Ad-hoc Groups
CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on Advances in Cryptology
ID-Based Blind Signature and Ring Signature from Pairings
ASIACRYPT '02 Proceedings of the 8th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
1-out-of-n Signatures from a Variety of Keys
ASIACRYPT '02 Proceedings of the 8th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
ASIACCS '07 Proceedings of the 2nd ACM symposium on Information, computer and communications security
Aggregate and verifiably encrypted signatures from bilinear maps
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
Certificateless signature revisited
ACISP'07 Proceedings of the 12th Australasian conference on Information security and privacy
An efficient certificateless signature scheme
CIS'05 Proceedings of the 2005 international conference on Computational Intelligence and Security - Volume Part II
On the security of certificateless signature schemes from asiacrypt 2003
CANS'05 Proceedings of the 4th international conference on Cryptology and Network Security
An efficient certificateless signature scheme
EUC'06 Proceedings of the 2006 international conference on Emerging Directions in Embedded and Ubiquitous Computing
Efficient identity based ring signature
ACNS'05 Proceedings of the Third international conference on Applied Cryptography and Network Security
Accumulators from bilinear pairings and applications
CT-RSA'05 Proceedings of the 2005 international conference on Topics in Cryptology
Identity based ring signature: why, how and what next
EuroPKI'05 Proceedings of the Second European conference on Public Key Infrastructure
Blind spontaneous anonymous group signatures for ad hoc groups
ESAS'04 Proceedings of the First European conference on Security in Ad-hoc and Sensor Networks
On the security models of (threshold) ring signature schemes
ICISC'04 Proceedings of the 7th international conference on Information Security and Cryptology
Security-Mediated certificateless cryptography
PKC'06 Proceedings of the 9th international conference on Theory and Practice of Public-Key Cryptography
Certificateless public-key signature: security model and efficient construction
ACNS'06 Proceedings of the 4th international conference on Applied Cryptography and Network Security
Key replacement attack against a generic construction of certificateless signature
ACISP'06 Proceedings of the 11th Australasian conference on Information Security and Privacy
Anonymous identification and designated-verifiers signatures from insecure batch verification
EuroPKI'07 Proceedings of the 4th European conference on Public Key Infrastructure: theory and practice
Certificateless Threshold Ring Signature
Information Sciences: an International Journal
Self-certified ring signatures
Proceedings of the 6th ACM Symposium on Information, Computer and Communications Security
Delegation of signing rights using certificateless proxy signatures
Information Sciences: an International Journal
Certificateless undeniable signatures from bilinear maps
Information Sciences: an International Journal
Certificate-free ad hoc anonymous authentication
Information Sciences: an International Journal
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Ring signature is a kind of group-oriented signature. It allows a member of a group to sign messages on behalf of the group without revealing his/her identity. Certificateless public key cryptography was first introduced by Al-Riyami and Paterson in Asiacrypt 2003. In certificateless cryptography, it does not require the use of certificates to guarantee the authenticity of users' public keys. Meanwhile, certificateless cryptography does not have the key escrow problem, which seems to be inherent in the Identity-based cryptography. In this paper, we introduce the notion of ring signature into certificateless public key cryptography and propose a concrete certificateless ring signature scheme. The security models of certificateless ring signature are also formalized. Our new scheme is provably secure in the random oracle model, with the assumption that the Computational Diffie-Hellman problem is hard.