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为了提高格上代理签名的效率,利用无陷门签名和小范数矩阵传递技术,构造了一个代理签名方案.方案中的小范数矩阵传递技术可以控制代理签名私钥维数,使得代理签名私钥的维数小于原始用户签名私钥的维数.方案的安全性基于格上的小整数解困难问题,与原有结果相比,降低了代理签名私钥和代理签名的尺寸.
In order to improve the efficiency of the proxy signature on the lattice, a proxy signature scheme is constructed by using the trapless gate signature and the small norm matrix transfer technology. The norm matrix transfer technology in the scheme can control the dimension of the proxy signature private key and make the proxy signature The dimension of the private key is smaller than the dimension of the original user’s private key.The security of the scheme is based on the problem of small integer solution on the lattice, which reduces the size of proxy signature private key and proxy signature compared with the original one.