Dynamic asymmetric group key agreement for ad hoc networks

Zhao, Xingwen; Zhang, Fangguo; Tian, Haibo

doi:10.1016/j.adhoc.2010.11.002

Cited by 36 publications

(47 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our motivation for this research is to use asymmetric group key in broadcast encryption based on braid groups in dynamic environment. Compares to the schemes in [8] and [9], our scheme uses less communication messages than the schemes in [8] and [9], and it avoids exponential operation as demonstrated in Section V.…”

Section: Introductionmentioning

confidence: 82%

“…The concept of braid groups assists to avoid modular exponential operation in computation cost and the key tree helps in reducing the communication cost to constant round, so the computation cost and the communication cost can be minimized. There are some research papers in doing asymmetric group key agreement as in Wu, Mu, Susilo, Qin, and Domingo-Ferrer [8] and Zhao, Zhang and Tian [9]. The former scheme is constructed on one round asymmetric group key agreement (ASGKA) based on the concept of aggregatable signature based broadcast (ASBB) by using bilinear pairings.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic broadcast encryption based on braid groups

Saguansakdiyotin

Hiranvanichakorn

2015

2015 Asian Conference on Defence Technology (ACDT)

View full text Add to dashboard Cite

Broadcast encryption is the scheme that a sender encrypts messages for a designated group of receivers, and sends the ciphertexts by broadcast over the networks. Dynamic environment of broadcast encryption needs to support conditions which someone can join a group, members of a group can leave a group, a group can join other groups, and a group can be separated into smaller groups dynamically. In this paper, we propose a dynamic broadcast encryption scheme based on braid groups cryptosystem, which is an alternative method in the public key cryptosystem and can reduce the computational cost. Join, leave, merge, and partition protocols are stated in our scheme to deal with dynamic environment. Our scheme has some advantages over the scheme using symmetric group key in that the sender can be someone inside or outside the group and it gets rid of the problem in distributing a secret key.

show abstract

Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Dynamic broadcast encryption based on braid groups

Saguansakdiyotin

Hiranvanichakorn

2015

2015 Asian Conference on Defence Technology (ACDT)

View full text Add to dashboard Cite

show abstract

“…This proof is straight-forward. Our method of generating group public-secret key pair derives from the dynamic asymmetric group key agreement scheme [33]. If the mobile users in group are honest, the correctness of the group key agreement scheme ensures to generate a shared group secret key.…”

Section: Regsk Jmentioning

confidence: 99%

“…For the dynamic of mobile users, we resort to the dynamic asymmetric group key agreement scheme [33], in which a set of users from a temporary group and negotiate to share a public-secret key pair. To achieve the tag-updating, we borrow the idea of proxy re-signature [26], which enables a semi-trusted proxy to transform Alice's signature on a message m into Bob's signature on m. In addition, the message flows of our protocol should be transmitted on a certified channel to avoid the attack proposed by Ni et al [34].…”

Section: Our Constructionmentioning

confidence: 99%

Identity Privacy-Preserving Public Auditing with Dynamic Group for Secure Mobile Cloud Storage

et al. 2014

Network and System Security

View full text Add to dashboard Cite

Abstract. With mobile cloud storage, mobile users can enjoy the advantages of both mobile networks and cloud storage. However, a major concern of mobile users is how to guarantee the integrity of the remote data. Taking into account the mobility of mobile devices, in this paper, we propose an identity privacy-preserving public auditing protocol in mobile cloud storage for dynamic groups. In our proposal, a dynamic group key agreement is employed for key sharing among mobile users group and the idea of proxy re-signatures is borrowed to update tags efficiently when users in the group vary. In addition, the third party auditor (TPA) is able to verify the correctness of cloud data without the knowledge of mobile users' identities during the data auditing process. We also analyze the security of the proposed protocol.

show abstract

“…Xingwen Zhao et al [10] have described dynamic asymmetric group key agreement (DASGKA) without central management. This agreement combines the conventional group key agreement, a public key encryption, and a multisignature.…”

Section: Distributed Group Key Management Techniquesmentioning

confidence: 99%