Fully Secure Ciphertext-Policy Attribute-Based Encryption in Prime Order Group
Songfeng Lu, Yu Zhang, Jie Sun, Liping Yang · Applied Mechanics and Materials · 2012
We present a fully secure ciphertext-policy attribute-based encryption (CP-ABE) scheme in prime order group by using a tool which can convert composite order paring-based encryption scheme into prime order one. Although, a fully secure CP-ABE scheme in prime order group has been proposed recently, our scheme needs less master secret key size and can be seen as a different version of it. Besides, the sketch of our scheme's security proof is also given.