摘要： 在数字水印设计中加入时间戳协议是对抗解释攻击的一种有效方法。针对数字水印方案中时间戳协议存在的弊端，结合位承诺协议对其进行改进。在保证原有时间戳协议安全性的前提下，降低引入时间戳对数字作品健壮性带来的压力。引入这种新的时间戳方案的数字水印具有更强的实用性。

关键词: 时间戳, 数字水印, 解释攻击, 位承诺

Abstract: Time stamp introduced on design of digital watermarking is an effective way to avoid the interpretation attack. This paper analyzes the shortcomings in the existing time stamp scheme and makes some improvement combined with bit commitment. On the premise of ensuring the security, the new scheme of time stamp reduces the robust pressure of digital works. The new time stamp scheme makes the digital watermarking more applicable.

Key words: time stamp, digital watermarking, interpretation attack, bit commitment

中图分类号: 

• TN911.73