Spatial crowdsourcing is a promising architecture for collecting various types of data online
with the aid of participants' powerful mobile devices. However, it is also associated with …

This paper proposes a self-embedding fragile watermarking scheme in encrypted speech
based on hyper-chaotic system and reference sharing mechanism. Hyper-chaotic system is …

Abstract In Vehicular Ad-Hoc Networks (VANETs) wireless-equipped vehicles form a
temporary network for sharing information among vehicles. Secure Multimedia …

This paper presents a novel paradigm for audio cryptosystems that uses elliptic curve
encryption to secure audio data. It has the goal of increasing the level of security in digital …

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Constant advances in Micro Electro-Mechanical System (MEMS) technology promote
miniaturization, low-cost and energy-efficiency of smart sensors. Meanwhile, Wireless …

Security of video encryption schemes is an issue yet to be addressed to the satisfaction of all
parties concerned. In the one end of the spectrum, there are applications which require …

Chaos theory was originally developed by mathematicians and physicists. The theory deals
with the behaviors of nonlinear dynamic systems. Chaos theory has desirable features, such …

This paper presents a novel scheme to blindly estimate the quality of an image
communication link by means of an unconventional use of digital watermarking. The …

数字音频文件数据量大, 相关性强, 冗余度高, 传统加密算法难以满足其实时安全性要求.
针对此问题, 根据人耳听觉特性提出了一种基于二值音频的可听密码方案 …