基于感知哈希与椭圆曲线密码的遥感影像认证算法

摘要

首先提取遥感影像的内容特征生成感知哈希序列，然后基于椭圆曲线密码对感知哈希序列进行加密与签名。在认证端，验证感知哈希序列来源的可靠性后，实现遥感影像基于感知内容的认证。实验与分析表明，该算法克服了现有感知哈希算法存在的密钥管理问题，保障了认证信息自身的安全性。%Firstly,the features of the remote sensing image are extracted to generate perceptual hash values. Secondly,the perceptual hash values are encrypted and signed based on ECC. Then,the content-based image authentication is achieved at the receiver end after the perceptual hash values are verified. Experiments and analysis show that the method overcomes the defect of key management,and thus the security of authentication information is guaran-teed.