Articles

Joint Encryption and Compression of Correlated Sources with Side Information

We propose a joint encryption and compression (JEC) scheme with emphasis on application to video data. The proposed JEC scheme uses the philosophy of distributed source coding with side information to reduce t...

Authors: M. A. Haleem, K. P. Subbalakshmi and R. Chandramouli

Efficient and Syntax-Compliant JPEG 2000 Encryption Preserving Original Fine Granularity of Scalability

A novel syntax-compliant encryption primitive and an efficient syntax-compliant JPEG 2000 encryption scheme are presented in this paper. The syntax-compliant encryption primitive takes, as input, syntax-compli...

Authors: Yang Yang, Bin B. Zhu, Shipeng Li and Nenghai Yu

The Interplay between Compression and Security for Image and Video Communication and Adaptation over Networks

Authors: Enrico Magli and Qibin Sun

Format-Compliant JPEG2000 Encryption in JPSEC: Security, Applicability, and the Impact of Compression Parameters

JPEG2000 encryption has become a widely discussed topic and quite a number of contributions have been made. However, little is known about JPEG2000 compression parameters and their influence on the security an...

Authors: Dominik Engel, Thomas Stütz and Andreas Uhl

A Workbench for the BOWS Contest

The first break our watermarking system (BOWS) contest challenged researchers to remove the watermark from three given images. Participants could submit altered versions of the images to an online detector. Fo...

Authors: Andreas Westfeld

Key-Dependent JPEG2000-Based Robust Hashing for Secure Image Authentication

We discuss a robust image authentication scheme based on a hash string constructed from leading JPEG2000 packet data. Motivated by attacks against the approach, key-dependency is added by means of employing a ...

Authors: Gerold Laimer and Andreas Uhl

Efficient Zero-Knowledge Watermark Detection with Improved Robustness to Sensitivity Attacks

Zero-knowledge watermark detectors presented to date are based on a linear correlation between the asset features and a given secret sequence. This detection function is susceptible of being attacked by sensit...

Authors: Juan Ramón Troncoso-Pastoriza and Fernando Pérez-González

An Efficient Objective Intelligibility Measure for Frequency Domain Scramblers

An objective performance measure is proposed to evaluate the intelligibility of a speech signal having its frequency subbands permuted. The proposed tool can be used to generate efficient keys for frequency do...

Authors: AMCR Borzino, JA Apolinário Jr. and DG da Silva

Breaking the BOWS Watermarking System: Key Guessing and Sensitivity Attacks

From December 15, 2005 to June 15, 2006, the watermarking community was challenged to remove the watermark from 3 different 512×512 watermarked images while maximizing the peak signal-to-noise ratio (PSNR) measur...

Authors: Pedro Comesaña and Fernando Pérez-González

Markov Modelling of Fingerprinting Systems for Collision Analysis

Multimedia fingerprinting, also known as robust or perceptual hashing, aims at representing multimedia signals through compact and perceptually significant descriptors (hash values). In this paper, we examine ...

Authors: Neil J. Hurley, Félix Balado and Guénolé C. M. Silvestre

Secure Multiparty Computation between Distrusted Networks Terminals

One of the most important problems facing any distributed application over a heterogeneous network is the protection of private sensitive information in local terminals. A subfield of cryptography called secur...

Authors: S.-C. S. Cheung and Thinh Nguyen

Reverse-Engineering a Watermark Detector Using an Oracle

The Break Our Watermarking System (BOWS) contest gave researchers three months to defeat an unknown watermark, given three marked images and online access to a watermark detector. The authors participated in t...

Authors: Scott Craver, Idris Atakli and Jun Yu

A Survey of Homomorphic Encryption for Nonspecialists

Processing encrypted signals requires special properties of the underlying encryption scheme. A possible choice is the use of homomorphic encryption. In this paper, we propose a selection of the most important...

Authors: Caroline Fontaine and Fabien Galand

Anonymous Fingerprinting with Robust QIM Watermarking Techniques

Fingerprinting is an essential tool to shun legal buyers of digital content from illegal redistribution. In fingerprinting schemes, the merchant embeds the buyer's identity as a watermark into the content so t...

Authors: J. P. Prins, Z. Erkin and R. L. Lagendijk

Audio Watermarking through Deterministic plus Stochastic Signal Decomposition

This paper describes an audio watermarking scheme based on sinusoidal signal modeling. To embed a watermark in an original signal (referred to as a cover signal hereafter), the following steps are taken. (a) A sh...

Authors: Yi-Wen Liu and Julius O. Smith

Transmission Error and Compression Robustness of 2D Chaotic Map Image Encryption Schemes

This paper analyzes the robustness properties of 2D chaotic map image encryption schemes. We investigate the behavior of such block ciphers under different channel error types and find the transmission error r...

Authors: Michael Gschwandtner, Andreas Uhl and Peter Wild

Multimedia Encryption with Joint Randomized Entropy Coding and Rotation in Partitioned Bitstream

This work investigates the problem of efficient multimedia data encryption. A novel methodology is proposed to achieve encryption by controlling certain operations in the data compression process using a secre...

Authors: Dahua Xie and C-CJay Kuo

Design and Analysis of the First BOWS Contest

The break our watermarking system (BOWS) contest was launched in the framework of the activities carried out by the European Network of Excellence for Cryptology ECRYPT. The aim of the contest was to investiga...

Authors: A Piva and M Barni

Joint Source, Channel Coding, and Secrecy

We introduce the concept of joint source coding, channel coding, and secrecy. In particular, we propose two practical joint schemes: the first one is based on error-correcting randomized arithmetic codes, whil...

Authors: Enrico Magli, Marco Grangetto and Gabriella Olmo

Digital Video Encryption Algorithms Based on Correlation-Preserving Permutations

A novel encryption model for digital videos is presented. The model relies on the encryption-compression duality of certain types of permutations acting on video frames. In essence, the proposed encryption pro...

Authors: Daniel Socek, Spyros Magliveras, Dubravko Ćulibrk, Oge Marques, Hari Kalva and Borko Furht

Oblivious Neural Network Computing via Homomorphic Encryption

The problem of secure data processing by means of a neural network (NN) is addressed. Secure processing refers to the possibility that the NN owner does not get any knowledge about the processed data since the...

Authors: C Orlandi, A Piva and M Barni