An Attribute-Based Encryption Scheme with Constant-Size Ciphertexts

In this paper, we present an attribute-based encryption scheme with constant-size cipher texts from zero inner product. The encrypter can select the required attribute set for privileged receivers. Only the receiver, whose attribute set contains all the attributes in the attribute set required by the cipher text, can decrypt and get the message. The size of the cipher text is constant. Further, the decryption algorithm takes only two pairing computation.