02-10-2012, 11:16 AM
Design of a robust and secure digital signature scheme for image authentication over wireless channels
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Abstract:
The introduction of 3G wireless communication systems, together with the invasive distribution of digital images and the growing concern on their originality triggers an emergent need of authenticating images received by unreliable channels, such as public Internet and wireless networks. To meet this need, a content-based image authentication scheme that is suitable for an insecure network and robust to transmission errors is proposed. The proposed scheme exploits the scalability of a structural digital signature in order to achieve a good tradeoff between security and image transfer for networked image applications. In this scheme, multi-scale features are used to make digital signatures robust to image degradations and key Idependent parametric wavelet filters are employed to improve the security against forgery attacks. This scheme is also able to distinguish tampering areas in the attacked image. Experimental results show the robustness and validity of the proposed scheme
Existing System:
Networked multimedia applications are often deployed in a distributed network environment that makes multimedia contents vulnerable to privacy and malicious attacks. For insecure environments, it is possible for an enemy to tamper with images during transmission. To guarantee trustworthiness, image authentication techniques have emerged to confirm content integrity and prevent forgery. These techniques are required to be robust against normal image processing and transmission errors, while being able to detect malevolent tampering on the image
Proposed System:
The proposed scheme exploits the scalability of a structural digital signature in order to achieve a good tradeoff between security and image transfer for networked image applications. In this scheme, multi-scale features are used to make digital signatures robust to image degradations and key dependent parametric wavelet filters are employed to improve the security against forgery attacks. This scheme is also able to distinguish tampering areas in the attacked image.