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ESORICS
2009
Springer

Attribute-Sets: A Practically Motivated Enhancement to Attribute-Based Encryption

9 years 8 months ago
Attribute-Sets: A Practically Motivated Enhancement to Attribute-Based Encryption
In distributed systems users need to share sensitive objects with others based on the recipients' ability to satisfy a policy. Attribute-Based Encryption (ABE) is a new paradigm where such policies are specified and cryptographically enforced in the encryption algorithm itself. Ciphertext-Policy ABE (CP-ABE) is a form of ABE where policies are associated with encrypted data and attributes are associated with keys. In this work we focus on improving the flexibility of representing user attributes in keys. Specifically, we propose Ciphertext Policy Attribute Set Based Encryption (CP-ASBE) - a new form of CP-ABE - which, unlike existing CP-ABE schemes that represent user attributes as a monolithic set in keys, organizes user attributes into a recursive set based structure and allows users to impose dynamic constraints on how those attributes may be combined to satisfy a policy. We show that the proposed scheme is more versatile and supports many practical scenarios more naturally an...
Rakeshbabu Bobba, Himanshu Khurana, Manoj Prabhaka
Added 23 Nov 2009
Updated 23 Nov 2009
Type Conference
Year 2009
Where ESORICS
Authors Rakeshbabu Bobba, Himanshu Khurana, Manoj Prabhakaran
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