Abstract:
Attribute Based Encryption was first introduced by Amit Sahai and Brent Waters. It
was proposed to solve complex access control mechanism over encrypted data. In
Attribute Based encryption the key and ciphertext deal with the set of attributes. There
are various schemes available of attribute based encryption e.g. ciphertext-policy
attribute based encryption, key-policy attribute based encryption and multiple
authority attribute based encryption. In this work we propose resisting single point of
failure in ciphertext-policy attribute based encryption with secure setup. Our scheme
consists of six algorithms of setup, AA setup, Key Generation, Request Attribute SK,
Encryption and Decryption. The features of our schemes is resisting the single point
of failure, secure against collusion attack and Scheme is fully secure.
