Chosen Ciphertext Secure Ciphertext-Policy Attribute-Based Encryption with Constant Ciphertext Length and Threshold Policy
نویسندگان
چکیده
A ciphertext-policy attribute-based encryption scheme allows that an encrypter assigns a decryption policy to ciphertexts. Any user will be able to decrypt if and only if a set of attributes (his private key) satisfy the assigned decryption policy. In this paper we first propose a new chosen ciphertext secure ciphertext-policy attribute-based encryption scheme with constant-size ciphertext and (t, n)-threshold policy.
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A Ciphertext-Policy Attribute-Based Encryption Scheme with Constant Ciphertext Length
An Attribute-Based Encryption (ABE) is an encryption scheme, where users with some attributes can decrypt ciphertexts associated with these attributes. The length of the ciphertext depends on the number of attributes in previous ABE schemes. In this paper, we propose a new Ciphertext-Policy Attribute-Based Encryption (CP-ABE) with constant ciphertext length. In our scheme, the number of pairing...
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