DIGITAL WATERMARKING FOR SECURE TRANSMISSION BETWEEN A SOURCE COMPONENT AND A NODE DEVICE

摘要

A system and method for embedding a watermark into a data file and communicating the data file to a particular node from a source component is described. The system includes a particular node, a source component, a node identifier request, a query, a watermark, a permutation key, an encrypted data file, and a node decryption key. The node identifier request is communicated from the source component to the particular node. The watermark is then embedded into the data file by the source component. The permutation key is configured to permute the watermark and the permutation key is changed so the location of the watermark changes. The encrypted data is decrypted at the particular node with the node decryption key that corresponds to the particular node. The particular node recovers the watermark from the data file with the permutation key.

主权项

1. A block management unification system for embedding a watermark into a data file and communicating the data file to a particular node from a source component, the system comprising:
a particular node operatively coupled to a network; a source component operatively coupled to the network, wherein the source component communicates with the particular node; a node identifier request communicated from the source component to the particular node; a query performed at the particular node for at least one node identifier that is unique to the particular node, the unique node identifier communicated from the particular node to the source component; a watermark embedded into the data file by the source component; a permutation key that permutes the watermark, wherein the permutation key is changed so the location of the watermark changes; a first rearrangement criterion corresponding to the source component that includes a randomizing module that divides the data file into a plurality of random blocks; a first block encryption key inserted into the blocks by the source component; a second rearrangement criterion corresponding to the source component that includes a pattern recognition module that generates a rearranged file having blocks with similar patterns; a second block encryption key inserted into the blocks by the source component; a compression module corresponding to the source component that compresses the rearranged blocks; an encryption module corresponding to the source component that encrypts the rearranged blocks corresponding to the data file with the first block encryption key and the second block encryption key; an encrypted data file generated by the source component, wherein the encrypted data file is produced with an encryption algorithm that utilizes the unique node identifier to generate an encryption key; a partial node decryption key that is generated by the source component and communicated from the source component to the particular node; a partial block management decryption key generated by the source component that is communicated to the particular node having a unique node identifier; a complete node decryption key assembled at the particular node with the unique node identifier and the partial decryption key; a block management decryption key assembled at the particular node with the unique node identifier and the partial block management decryption key; the encrypted data file communicated from the source component to the particular node and decrypting the encrypted data file at the particular node with the complete node decryption key that corresponds to the particular node, and enabling the particular node to recover the watermark from the data file with the permutation key; and the block management decryption key decrypting the encrypted rearranged block with the first block encryption key and the second block encryption key.