Identification and Proof of Ownership by Watermarking Relational Databases Vidhi Khanduja, Member, IACSIT and O. P. Ver
Keywords:
Relational Database, Watermark, Copyright protection, Ownership identification, Proof of ownershipAbstract
Rapid increase in copying and distributing digital
assets are major concerned to content owners. In this paper, we proposed a new robust secure and imperceptible embedding mechanism to resolve the two important concerns namely; owner identification and proof of ownership. The steps of proposed mechanism for watermarking relational databases mainly involves encoding and decoding on numerical attribute of relational database in three phases; 1)Watermark
preparator, 2)Watermark position detector and 3) Watermark Embedder or Detector. The first phase resolves ownership identification issue as owner’s identity is used to get watermark bits. In second phase position where watermarks are to be embedded are identified using secret key and pseudorandom generators. This phase marks multiple attributes with varying number of candidate bit positions within a single tuple. In the third phase watermarks are embedded in Encoder. While decoder extracts watermarks and detects database piracy
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