CRYPTO '96 Proceedings of the 16th Annual International Cryptology Conference on Advances in Cryptology
The Gap-Problems: A New Class of Problems for the Security of Cryptographic Schemes
PKC '01 Proceedings of the 4th International Workshop on Practice and Theory in Public Key Cryptography: Public Key Cryptography
ASIACCS '07 Proceedings of the 2nd ACM symposium on Information, computer and communications security
Generic Constructions of Identity-Based and Certificateless KEMs
Journal of Cryptology
A survey of certificateless encryption schemes and security models
International Journal of Information Security
Strongly Secure Certificateless Key Agreement
Pairing '09 Proceedings of the 3rd International Conference Palo Alto on Pairing-Based Cryptography
Simulatable certificateless two-party authenticated key agreement protocol
Information Sciences: an International Journal
Provably Secure Certificateless Two-Party Authenticated Key Agreement Protocol without Pairing
CIS '09 Proceedings of the 2009 International Conference on Computational Intelligence and Security - Volume 02
Generic certificateless key encapsulation mechanism
ACISP'07 Proceedings of the 12th Australasian conference on Information security and privacy
Certificateless signature revisited
ACISP'07 Proceedings of the 12th Australasian conference on Information security and privacy
Generic certificateless encryption in the standard model
IWSEC'07 Proceedings of the Security 2nd international conference on Advances in information and computer security
Stronger security of authenticated key exchange
ProvSec'07 Proceedings of the 1st international conference on Provable security
Certificateless authenticated two-party key agreement protocols
ASIAN'06 Proceedings of the 11th Asian computing science conference on Advances in computer science: secure software and related issues
Certificateless encryption schemes strongly secure in the standard model
PKC'08 Proceedings of the Practice and theory in public key cryptography, 11th international conference on Public key cryptography
Constructing certificateless encryption and ID-based encryption from ID-based key agreement
Pairing'10 Proceedings of the 4th international conference on Pairing-based cryptography
HMQV: a high-performance secure diffie-hellman protocol
CRYPTO'05 Proceedings of the 25th annual international conference on Advances in Cryptology
Certificateless public key encryption without pairing
ISC'05 Proceedings of the 8th international conference on Information Security
Making the diffie-hellman protocol identity-based
CT-RSA'10 Proceedings of the 2010 international conference on Topics in Cryptology
Toward pairing-free certificateless authenticated key exchanges
ISC'11 Proceedings of the 14th international conference on Information security
An efficient certificateless two-party authenticated key agreement protocol
Computers & Mathematics with Applications
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In certificateless cryptography, a user secret key is derived from two partial secrets: one is the identity-based secret key (corresponding to the user identity) generated by a Key Generation Center (KGC), and the other is the user self-generated secret key (corresponding to a user self-generated and uncertified public key). Two types of adversaries are considered for certificateless cryptography: a Type-I adversary who can replace the user self-generated public key (in transmission or in a public directory), and a Type-II adversary who is an honest-but-curious KGC. In this paper, we present a formal study on certificateless key exchange (CLKE). We show that the conventional definition of Type-I and Type-II security may not be suitable for certificateless key exchange when considering the notion of forward secrecy which is important for key exchange protocols. We then present a new security model in which a single adversary (instead of Type-I and Type-II adversaries) is considered. We also construct a strongly secure certificateless key exchange protocol without expensive pairing operations. As far as we know, our proposed protocol is the first proven secure CLKE protocol without pairing.