Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/584243
Title: Cryptographic Hierarchical Access Control for Dynamic Structures
Authors: Arcangelo Castiglione;Alfredo De Santis;Barbara Masucci;Francesco Palmieri;Aniello Castiglione;Xinyi Huang
subject: adaptive adversary|dynamic structures|key assignment|provable security|Access control
Year: 2016
Publisher: IEEE
Abstract: A hierarchical key assignment scheme is a method to assign some private information and encryption keys to a set of classes in a partially ordered hierarchy, in such a way that the private information of a higher class can be used to derive the keys of all classes lower down in the hierarchy. Sometimes, it is necessary to make dynamic updates to the hierarchy, in order to implement an access control policy which evolves with time. All security models for hierarchical key assignment schemes have been designed to cope with static hierarchies and do not consider the issue of performing dynamic updates to the hierarchy. In this paper, we define the concept of hierarchical key assignment schemes supporting dynamic updates, formalizing the relative security model. In particular, we provide the notion of security with respect to key indistinguishability, by considering the dynamic changes to the hierarchy. Moreover, we show how to construct a hierarchical key assignment scheme supporting dynamic updates, by using as a building block a symmetric encryption scheme. The proposed construction is provably secure with respect to key indistinguishability, and provides efficient key derivation and updating procedures, while requiring each user to store only a single private key.
URI: http://localhost/handle/Hannan/165730
http://localhost/handle/Hannan/584243
ISSN: 1556-6013
1556-6021
volume: 11
issue: 10
Appears in Collections:2016

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Title: Cryptographic Hierarchical Access Control for Dynamic Structures
Authors: Arcangelo Castiglione;Alfredo De Santis;Barbara Masucci;Francesco Palmieri;Aniello Castiglione;Xinyi Huang
subject: adaptive adversary|dynamic structures|key assignment|provable security|Access control
Year: 2016
Publisher: IEEE
Abstract: A hierarchical key assignment scheme is a method to assign some private information and encryption keys to a set of classes in a partially ordered hierarchy, in such a way that the private information of a higher class can be used to derive the keys of all classes lower down in the hierarchy. Sometimes, it is necessary to make dynamic updates to the hierarchy, in order to implement an access control policy which evolves with time. All security models for hierarchical key assignment schemes have been designed to cope with static hierarchies and do not consider the issue of performing dynamic updates to the hierarchy. In this paper, we define the concept of hierarchical key assignment schemes supporting dynamic updates, formalizing the relative security model. In particular, we provide the notion of security with respect to key indistinguishability, by considering the dynamic changes to the hierarchy. Moreover, we show how to construct a hierarchical key assignment scheme supporting dynamic updates, by using as a building block a symmetric encryption scheme. The proposed construction is provably secure with respect to key indistinguishability, and provides efficient key derivation and updating procedures, while requiring each user to store only a single private key.
URI: http://localhost/handle/Hannan/165730
http://localhost/handle/Hannan/584243
ISSN: 1556-6013
1556-6021
volume: 11
issue: 10
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7492252.pdf2.28 MBAdobe PDFThumbnail
Preview File
Title: Cryptographic Hierarchical Access Control for Dynamic Structures
Authors: Arcangelo Castiglione;Alfredo De Santis;Barbara Masucci;Francesco Palmieri;Aniello Castiglione;Xinyi Huang
subject: adaptive adversary|dynamic structures|key assignment|provable security|Access control
Year: 2016
Publisher: IEEE
Abstract: A hierarchical key assignment scheme is a method to assign some private information and encryption keys to a set of classes in a partially ordered hierarchy, in such a way that the private information of a higher class can be used to derive the keys of all classes lower down in the hierarchy. Sometimes, it is necessary to make dynamic updates to the hierarchy, in order to implement an access control policy which evolves with time. All security models for hierarchical key assignment schemes have been designed to cope with static hierarchies and do not consider the issue of performing dynamic updates to the hierarchy. In this paper, we define the concept of hierarchical key assignment schemes supporting dynamic updates, formalizing the relative security model. In particular, we provide the notion of security with respect to key indistinguishability, by considering the dynamic changes to the hierarchy. Moreover, we show how to construct a hierarchical key assignment scheme supporting dynamic updates, by using as a building block a symmetric encryption scheme. The proposed construction is provably secure with respect to key indistinguishability, and provides efficient key derivation and updating procedures, while requiring each user to store only a single private key.
URI: http://localhost/handle/Hannan/165730
http://localhost/handle/Hannan/584243
ISSN: 1556-6013
1556-6021
volume: 11
issue: 10
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7492252.pdf2.28 MBAdobe PDFThumbnail
Preview File