A dual fragile watermarking based on hash for speech authentication

• 作 者: QIANQing;WANGHongxia;LIJinfeng;
• 机 构: School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031
• 出 处: 第十二届全国信息隐藏暨多媒体信息安全学术大会
• 发表日期: 2015年期

　　In order to achieve the integrity authentication of speech files, a hashbased dual fragile watermarking algorithm is proposed.In the proposed scheme,the speech signal is firstly transformed into a matrix, then each row and column of the matrix and the sensitive hash function are used to generate two fragile watermarks.In the process of tamper detection, extracted watermarks and reconstructed watermarks are employed to construct two verification vectors,which form a verification grid that helps to detect attacks and locate the forgery domain.Experimental results show that the fragile watermarks have good imperceptibility and vulnerability.More importantly, the proposed algorithm can not only detect attacks, but also accurately locate the tamped samples.