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Home Page Alessia De Rosa

 

Dipartimento di Ingegneria dell'Informazione
Università degli Studi di Firenze
Via S. Marta 3, 50139, Firenze, Italy
Tel: +39 055 2758550
Fax: +39 055 2758570
E-mail: alessia.derosa [AT] unifi.it

Research  |  Projects  |  Publications

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Secure Signal Processing

e-FFT.rar

This archive includes a C++ prototype implementation of encrypted domain fast Fourier transform (e-FFT) based on Paillier homomorphic cryptosystem [1]. Both radix-2 and radix-4 decimation in time versions are provided. If you find the code useful, please cite the following reference:

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Multimedia Forensics

GVPF repository
 

This repository includes a Matlab implementation of the Generalized Variation of Prediction Footprint. The tool is described in D. Vázquez-Padín, M. Fontani, D. Shullani, F. Pérez-González, A. Piva, M. Barni. "Video Integrity Verification and GOP Size Estimation via Generalized Variation of Prediction Footprint" to appear in IEEE Transactions on Information Forensics and Security, 10.1109/TIFS.2019.2951313.

 

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Watermarking

A digital watermark is a signal permanently embedded into a multimedia content (audio, image, video, text) that can be detected or extracted later by means of computing operations to make an assertion about the data.

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Phisical Layer Security

 

  • Physical layer modulations for intrinsic secure wireless channel without any a priori knowledge between Tx and Rx
  • Authentication mechanisms
  • Quantum Cryptography
  • Legal aspects
  • Emergency communications systems
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Multimedia Forensics

Multimedia Forensics includes a set of scientific techniques recently proposed for the analysis of multimedia signals (audio, videos, images) in order to recover probative evidences from them; in particular, such technologies aim to reveal the history of digital contents:

  • identifying the acquisition device that produced the data,

  • validating the integrity of the contents,

  • retrieving information from multimedia signals.

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Secure Signal Processing

 Recent advances in the processing of digital contents have made available a large number of new services regarding the fruition of these contents. Some examples are the linking of massive volumes of personal data by service providers such as search engines, social networks, video galleries, or the outsourcing of services such as computing on sensitive data to remote servers.

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