A method for obtaining digital signatures and public-key cryptosystems
Communications of the ACM
Counterfeiting attacks on oblivious block-wise independent invisible watermarking schemes
IEEE Transactions on Image Processing
Secret and public key image watermarking schemes for image authentication and ownership verification
IEEE Transactions on Image Processing
A new, fast, and efficient image codec based on set partitioning in hierarchical trees
IEEE Transactions on Circuits and Systems for Video Technology
A robust image authentication method distinguishing JPEG compression from malicious manipulation
IEEE Transactions on Circuits and Systems for Video Technology
An enhanced drawing reproduction graphical password strategy
Journal of Computer Science and Technology - Special issue on Natural Language Processing
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This paper proposes an authentication scheme for JPEG images based on digital signature and semi-fragile watermarking. It can detect and locate malicious manipulations made to the image, and verify the ownership of the image at the same time. The algorithm uses the invariance of the order relationship between two DCT coefficients before and after JPEG compression to embed image content dependent watermark, therefore the watermark can survive the JPEG lossy compression. Since the scheme is based on the security of the cryptographic hash function and public key algorithm, it is believed to be secure to the extent that cryptography is believed to be. Theoretical analysis and experimental results show that the proposed scheme has the desired property and good performance for image authentication.