An Optimal Algorithm for Assigning Cryptographic Keys to Control Access in a Hierarchy
IEEE Transactions on Computers
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Information Processing Letters
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Computers and Security
Cryptographic key assignment scheme for access control in a hierarchy
Information Systems
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ACM Transactions on Computer Systems (TOCS)
Cryptography and data security
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A cryptographic key assignment scheme in a hierarchy for access control
Mathematical and Computer Modelling: An International Journal
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Proceedings of the 12th ACM conference on Computer and communications security
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Fundamenta Informaticae
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ACM Transactions on Information and System Security (TISSEC)
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Computer Standards & Interfaces
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Information Sciences: an International Journal
Tolerant Key Assignment for Enforcing Complicated Access Control Policies in a Hierarchy
Fundamenta Informaticae
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Fundamenta Informaticae
SecureDropbox: a file encryption system suitable for cloud storage services
Proceedings of the 2013 ACM Cloud and Autonomic Computing Conference
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In this paper, we propose a new dynamic cryptographic key generation scheme for access control in a hierarchy. Our method can achieve the following three goals. First, the storage space needed to store public information is smaller than that required in previous work. Second, when a security class is added to the hierarchy, we assign a secret key and a public derivation key to the security class without affecting the keys of the other security classes in the hierarchy. Third, when a security class is deleted from the hierarchy, we simply erase the keys of that security class in the hierarchy and change the derivation key of its immediate ancestor.