Image data confirmation method based on security watermarking and blockchain
Liu Zhang, Xuehui Du, Aodi Liu · 2024
Aiming at the problem of unclear resource ownership and difficult definition of image data security sharing technology, combined with blind watermarking technology, this paper proposes a method of image data rights confirmation based on security watermarking and block chain to realize the security of image data rights confirmation in the flow process and ensure the integrity of the image. Firstly, SM2 digital signature algorithm is used to sign the identity information of image data holder to realize the identity authentication of data. At the same time, SM4 is used to encrypt the relevant information to realize the encrypted transmission of the information in the watermark. Upload the hash value of the watermark to the blockchain to ensure that the watermark information cannot be tampered with; Then, the watermark embedding and extraction algorithm based on discrete wavelet transform and singular value decomposition (DWT-SVD) is used to ensure the concealment of the information flow. Finally, compared with the existing right confirmation methods, it is verified that the proposed method has certain advantages of security and concealment, and can meet the needs of privacy protection and traceability.