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Two-Party Attribute-based Key Agreement Protocol in the Standard Model

Hao Wang, Qichao Xu, Xiu Fen Fu

Published Aug 20, 2013• 1 citation
OpenAlex

Abstract

Abstract—We present a new two-party attribute-based key agreement protocol that is secure without the random oracle model in groups equipped with a bilinear map. The attribute-based key agreement scheme is one type of the identity-based key agreement scheme, in which the identity can be viewed as a set of descriptive attributes. These kinds of schemes provide some new properties, such as hiding the identity information of the individual, increasing the flexibility of key management, and providing efficient means to revoke users from the system. Index Terms—attribute-based key agreement, without random oracles I.

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•Jan 1, 2010•3 citations
Abstract—We present a new two-party attribute-based key agreement protocol that is secure without the random oracle model in groups equipped with a bilinear map. The attribute-based key agreement scheme is one type of the identity-based key agreement scheme, in which the identity can be viewed as a set of descriptive attributes. These kinds of schemes provide some new properties, such as hiding the identity information of the individual, increasing the flexibility of key management, and providing efficient means to revoke users from the system. Index Terms—attribute-based key agreement, without random oracles I.
In this paper, we present a two-party attribute-based key agreement protocol, which is secure in random oracle model under the Bilinear Diffe-Hellman assumption. It is inspired by a fuzzy identity-based encryption scheme first proposed by Sahai and Waters. The attribute-based key agreement scheme is a new type of identity-based key agreement scheme, in which we can view identity as a set of descriptive attributes. Our scheme not only preserves the advantages of traditional identity-based key agreement protocol, but also provides some new properties, such as hiding the identity information of the individual, increasing the flexibility of key management.
Abstract—In this paper, we present a two-party attribute-based key agreement protocol, which is secure in the standard model (without random oracles), under the truncated decision q-ABDHE assumption. Then we give a modified version of this scheme, in which the users can be revoked efficiently. The attribute-based key agreement protocol is based on the attribute-based encryption scheme, which is a generalization of identity-based cryptosystems, incorporates attributes as inputs to its cryptographic primitives. These kinds of schemes not only preserve the advantages of traditional identity-based key agreement protocol, but also provide some new properties, such as hiding the identity information of the individual, increasing the flexibility of key management, and providing efficient means to revoke users from the system. Index Terms—attribute-based key agreement, without random oracles, revocation I.
In recent years, a large number of identity-based key agreement protocols from pairings have been proposed. Some of them are elegant and practical. However, using most of those protocols, the session key which users arrive is depended on the identity information. In this paper, we first propose a two-party identity-based key agreement protocol based on pairings whose security relies on the hardness of the bilinear Diffie-Hellman problem in the random oracle model, and the session key is independent of the identity information. After that we extend the protocol to an identity-based group key agreement protocol, which uses no broadcasting. The proposed key agreement protocol achieves the security attributes: known session key security, perfect forward secrecy, no key compromise impersonation, no unknown key share and no key control.
Summary Tripartite key agreement protocols enable three users to share a common and secure secret key by exchanging some information in a public channel. In this paper, we introduce the first attribute‐based tripartite key agreement protocol, which is a kind of identity‐based tripartite key agreement protocols, which the identities consist of descriptive attributes. Also, we propose an extended security model for these protocols and prove the security of our protocol in the random oracle model.Copyright © 2014 John Wiley & Sons, Ltd.
Motivated by the problem of establishing a session key among parties based on the possession of certain credentials only, we discuss a notion of attribute-based key establishment. A number of new issues arise in this setting that are not present in the usual settings of group key establishment where unique user identities are assumed to be publicly available. After detailing the security model, we give a two-round solution in the random oracle model. As main technical tool we introduce a notion of attribute-based signcryption, which may be of independent interest. We show that the type of signcryption needed can be realized through the encrypt-then-sign paradigm. Further, we discuss additional guarantees of the proposed protocol, that can be interpreted in terms of deniability and privacy.
Motivated by the problem of establishing a session key among parties based on the possession of certain credentials only, we discuss a notion of attribute-based key establishment. A number of new issues arise in this setting that are not present in the usual settings of group key establishment where unique user identities are assumed to be publicly available. After detailing the security model, we give a two-round solution in the random oracle model. As main technical tool we introduce a notion of attribute-based signcryption, which may be of independent interest. We show that the type of signcryption needed can be realized through the encrypt-then-sign paradigm. Further, we discuss additional guarantees of the proposed protocol, that can be interpreted in terms of deniability and privacy.