Ciphertext policy Attribute based Encryption with anonymous access policy
نویسندگان
چکیده
منابع مشابه
Ciphertext Policy Attribute based Encryption with anonymous access policy
In Ciphertext Policy Attribute based Encryption scheme, the encryptor can fix the policy, who can decrypt the encrypted message. The policy can be formed with the help of attributes. In CP-ABE, access policy is sent along with the ciphertext. We propose a method in which the access policy need not be sent along with the ciphertext, by which we are able to preserve the privacy of the encryptor. ...
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The ciphertext-policy (CP) attribute-based broadcast encryption (CP-ABBE) is a more flexible broadcast encryption (BE), in which the broadcaster encrypts the data with an access policy and a receiver set. Only receivers in the valid set who satisfy the access policy will be able to decrypt the ciphertext. However, most existing CPABBE schemes only pay attention to plaintext privacy rather than ...
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Attribute-based encryption (ABE) is an extension of traditional public key encryption in which the encryption and decryption phases are based on user’s attributes. More precisely, we focus on ciphertext-policy ABE (CP-ABE) where the secret-key is associated to a set of attributes and the ciphertext is generated with an access policy. It then becomes feasible to decrypt a ciphertext only if one’...
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In this paper, we introduce a new cryptographic primitive, called adaptable ciphertext-policy attribute-based encryption (CP-ABE). Adaptable CP-ABE extends the traditional CP-ABE by allowing a semitrusted proxy to modify a ciphertext under one access policy into ciphertexts of the same plaintext under any other access policies; the proxy, however, learns nothing about the underlying plaintext. ...
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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 work, we present the first construction of a ciphertext-policy attribute based e...
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ژورنال
عنوان ژورنال: International Journal of Peer to Peer Networks
سال: 2010
ISSN: 2229-5240
DOI: 10.5121/ijp2p.2010.1101