Quantum homomorphic signature using coherent states
Qing-bin Luo, Guowu Yang, Kun She, Xiaoyu Li, Yuqi Wang · 2016
In this paper, a novel scheme for quantum homomorphic signature based on coherent states is proposed, which is an effective approach to identity authentication for multiple streams to enhance the security of quantum networks. The state used for signature are arbitrarily close in trace distance to states of O(log2n), if the length of the nodes' messages is n-bit. The scheme analysis shows that the scheme is a quantum group homomorphic signature scheme and the signature is unforgeable.