We propose a novel model to characterize the security of linear blinding techniques. The proposed model relates the security of blinding to the possibility of estimating the blinded signals up to a certain signal-to-noise ratio (SNR). Practical upper bounds on the SNR are derived by relying on rate-distortion theory and evaluating the mutual information between the blinded and the plaintext signals. The proposed bounds allow to characterize the security of different blinding techniques, showing that multiplicative blinding techniques can not achieve the same level of security as additive ones. The proposed model provides a rigorous measure for evaluating the tradeoff between security and efficiency in practical secure signal processing algorithms.
Analysis of the security of linear blinding techniques from an information theoretical point of view / Tiziano Bianchi;Alessandro Piva;Mauro Barni. - ELETTRONICO. - (2011), pp. 5852-5855. (Intervento presentato al convegno 2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) tenutosi a Prague, Czech Republic nel May 22-27, 2011) [10.1109/ICASSP.2011.5947692].
Analysis of the security of linear blinding techniques from an information theoretical point of view
PIVA, ALESSANDRO;
2011
Abstract
We propose a novel model to characterize the security of linear blinding techniques. The proposed model relates the security of blinding to the possibility of estimating the blinded signals up to a certain signal-to-noise ratio (SNR). Practical upper bounds on the SNR are derived by relying on rate-distortion theory and evaluating the mutual information between the blinded and the plaintext signals. The proposed bounds allow to characterize the security of different blinding techniques, showing that multiplicative blinding techniques can not achieve the same level of security as additive ones. The proposed model provides a rigorous measure for evaluating the tradeoff between security and efficiency in practical secure signal processing algorithms.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.