Proxy Re-encryption Scheme based on New Multivariate Quadratic Assumptions

Shuaishuai Zhu, Xiaoyuan Yang
2013 Journal of Computers  
In PKC 2012, a public key encryption based on new multivariate quadratic assumptions is proposed. The compactness and security of the algorithm illumined us in applying it in proxy re-encryption scheme. In this paper, a novel unidirectional PRE scheme (NMQ-PRE) is constructed based on new multivariate quadratic assumptions. The new scheme is a formal PRE scheme and compact in cryptographic protocols. By applying the nature property of multivariate quadratic assumptions, NMQ-PRE is proved chosen
more » ... ciphertext attack in standard model. Compared with the traditional PRE scheme based on RSA or pairings, NMQ-PRE is computationally efficient and simpler. Finally, a NMQ-PRE scheme for message block is built for application convenience, such as file sharing or mail forwarding. and has participated several national natural science projects of network security, new cryptography scheme design, and data storage.
doi:10.4304/jcp.8.12.3238-3242 fatcat:dxeg33yykbdalixtxsnwwpfyee