Bounded Ciphertext Policy Attribute Based Encryption

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Provided by: UCL Business PLC
Topic: Security
Format: PDF
In a ciphertext policy attribute based encryption system, a user's private key is associated with a set of attributes (describing the user) and an encrypted ciphertext will specify an access policy over attributes. A user will be able to decrypt if and only if his attributes satisfy the ciphertext's policy. In this paper, the authors present the first construction of a ciphertext-policy attribute based encryption scheme having a security proof based on a number theoretic assumption and supporting advanced access structures.
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