基于公钥密码体制的分布式信息隐藏机制

A Distributed Information Hiding Mechanism Based on Public-Key Cryptographic Systems

文章提出一种将公钥密码体制运用到信息隐藏的分布式隐藏新机制,在其算法中,综合运用了公钥密码、数字签名、秘密共享、数据压缩、图象处理等技术,使得数据隐藏的不可见性更强,安全性更高;由于采用Shamir门限体制,只需要部分信息就可恢复全部秘密,鲁棒性更强,这一点尤其在版权保护和数字水印中有重要价值。另外,由于有数字签名的存在,就保证了信息发送者身份的真实性,这样运用在商业中,消费者就可以凭数字签名来防止商家抵赖,这是不同于其它算法的创新之处。

Integrated with public-key cryptographic systems, the paper proposes a new distributed information hiding mechanism, in which technics such as public-key encryption, digital signature, secret sharing, data compression and image processing have been applied, so that better hiding effect and security can be achieved. And thanks to Shamir＇s algorithm,only part of the hiding data are needed to recover the whole original information so that it＇s more stable. It＇s especially useful in the application of copyright protection and digital watermark. Also the authenticity of the information sender can be guaranteed with digital signature. This feature, which differs from other algorithms, can defend consumers against traders cheating if used in business.