中文摘要：

基于弱非线性及对称量子密码体系提出了一个量子信息签名方案．信息发送方可以发送消息给接收方并且能够判断信息是否被敌手修改或换掉．一旦验证签名成功，依赖于一个忠实的公证人，通信双方对信息的发送或接收都不能否认．

英文摘要：

A quantum information signature protocol based on weak nonlinearity and the symmetrical quantum cryptography is proposed. A sender can send classical messages and can judge whether the messages have been modified or replaced by an adversary. When the authentication of messages is completed, the fact of the communication can neither be disavowed by the sender nor be denied by the receiver because of the existence of an honest arbitrator.