Proxy Aggregation Signature Scheme with Forward Security

With the continuous development of economy and society, data security has been the biggest issue that restricts social development. Based on the elliptic curve discrete logarithm problem and the strong RSA hypothesis, we proposed a forward-aggregation proxy aggregation signature scheme. The scheme has the following characteristics: Firstly, it has non-repudiation and realizes two-way verification of signed users and trusted centers. Secondly, the scheme has forward security and ensures the security of signature information. Finally, under the random oracle model It proves that the scheme is anti-existence forgery.