Adrian Papamarcou

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—A system which embeds watermarks in-dimensional Gaussian data and distributes them in compressed form is studied. The watermarked/compressed data have to satisfy a distortion constraint, and the watermark has to be recoverable in a private scenario (in which the original data are available at the watermark detector). The performance of the system in the(More)
This paper considers a fingerprinting system where 2 nR W distinct Gaussian fingerprints are embedded in respective copies of an n-dimensional i.i.d. Gaus-sian image. Copies are distributed to customers in digital form, using R Q bits per image dimension. By means of a coding theorem, a rate region for the pair (R Q , R W) is established such that (i) the(More)
applies and teaches advanced methodologies of design and analysis to solve complex, hierarchical, heterogeneous and dynamic problems of engineering technology and systems for industry and government. The ease with which digital data can be duplicated and distributed over the media and the Internet has raised many concerns about copyright infringement.(More)
This dissertation studies the problem of secret key generation for encrypted group communication in a network, based on an information theoretic approach. This approach, which relies on a provable form of security, also provides suggestions for key constructions. We examine the problem of the simultaneous generation of multiple keys by different groups of(More)