信息媒体的数字化为信息的保存和提取提供了极大的方便，随着数字媒体的传送空间不断扩大，传送时间也 在不断缩短，数字产品在发布和传送过程中很容易被侵权、盗版或随意篡改。本文针对图像信息的版权、所有权和内容完整性 的保护等问题，利用低位水印技术，重点解决图像信息认证问题，以实现对图像信息的版权、所有权和内容完整性保护及双方 责任鉴定等功能。

The digitization of information media provides a lot convenience for the information preservation and extraction. With the development of digital media transfer space expanding, the transfer time has been shorted. Digital products are easily infringed, pirated or juggled in the process of transmission. This paper aims at protecting the image information, the ownership of copyright and content integrity, uses the LSB technology to solve the problem of image information authentication, to realize the function of protecting the copyright of the digital information.