On multi-authority ciphertext-policy attribute-based encryption

다국어 초록 (Multilingual Abstract)

In classical encryption schemes, data is encrypted under a single
key that is associated with a user or group.
In Ciphertext-Policy Attribute-Based Encryption(CP-ABE) keys are
associated with attributes of users, given to them by a
central trusted authority, and data is encrypted under a logical
formula over these attributes.
We extend this idea to the case where an arbitrary number of
independent parties can be present to maintain attributes and their
corresponding secret keys.
We present a scheme for multi-authority CP-ABE, propose the first
two constructions that fully implement the scheme, and prove their
security against chosen plaintext attacks.

다국어 초록 (Multilingual Abstract)

In classical encryption schemes, data is encrypted under a single
key that is associated with a user or group.
In Ciphertext-Policy Attribute-Based Encryption(CP-ABE) keys are
associated with attributes of users, given to them by a
central trusted authority, and data is encrypted under a logical
formula over these attributes.
We extend this idea to the case where an arbitrary number of
independent parties can be present to maintain attributes and their
corresponding secret keys.
We present a scheme for multi-authority CP-ABE, propose the first
two constructions that fully implement the scheme, and prove their
security against chosen plaintext attacks.

참고문헌 (Reference)

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