ChaCha is a family of stream ciphers that are very efficient on constrainted platforms. In this paper, we present electromagnetic sidechannel analyses for two different software implementations of ChaCha20 on a 32-bit architecture: one compiled and another one directly written in assembly. On the device under test, practical experiments show that they have different levels of resistance to side...

In this paper we investigate stream adaptation policies for video streaming servers which use smooth TCP-friendly congestion controls to compute the sending bitrate. We seek an optimal adaptation policy which maximizes the perceived quality at the client side and tries to avoid an empty prefetch buffer at the client side. In order to do so, we first develop an optimization framework for our pro...

In this paper, we propose a novel solution for the adaptive streaming of 3D representations in the form of multi-view video by utilizing P2P overlay networks to assist the media delivery and minimize the bandwidth requirement at the server side. Adaptation to diverse network conditions is performed regarding the features of human perception to maximize the perceived 3D. We have performed subjec...

This report studies the security of Whitenoise, a stream cipher invented by BSB Utilities Inc. I present the results of a limited time analysis of this scheme. After a careful security analysis, I was unable to find any security weaknesses in the Whitenoise stream cipher. Whitenoise resists all of the attack methods I was able to think of. This provides evidence for the security of Whitenoise. ...

The safe operation of a semi-batch catalytic reactor remains a sensitive issue when highly exothermic side reactions may occur, and various elements such as controllability, stability, safety, and economic aspects have to be considered in the process development. Nominal operating conditions are set to avoid excessive thermal sensitivity to variations in the process parameters. Several shortcut...

In this paper we provide the first side-channel analysis of the K2 stream cipher. K2 is a fast and secure stream cipher built upon the strengths of SNOW 2.0. We apply timing attacks, power analysis, and differential fault analysis to K2. We show that naively implemented K2 is vulnerable to cache-timing attacks, and describe how to implement efficient countermeasures to protect K2 against side-c...

Inductively coupled plasma ~ICP! etching reactors are rapidly becoming the tool of choice for low gas pressure, high plasma density etching of semiconductor materials. Due to their symmetry of excitation, these devices tend to have quite uniform etch rates across the wafer. However, side to side and azimuthal variations in these rates have been observed, and have been attributed to various asym...

Jumping LFSRs have recently been proposed [SASC04] as building blocks for stream ciphers. In this paper a construction based on these principles is described. The proposed encryption primitive is the key stream generator part of a synchronous stream cipher accommodating a key of 128 bits and an IV of 64 up till 112 bits. A number of cryptanalytic attacks are considered, leading to the conclusio...

ecotoxicity of rhodium (rh) from the model of mining waste water side stream was examinedin this paper. rh was extracted from the model of the mining waste water using an emulsion liquid membrane(elm). the extractions were done at ph of 1.87 and ph 2.92 and 41.6 % and 46.2 % of rh was extractedrespectively. the side streams of ph of 1.87 and ph 2.92 after the extractions were examined for ecoto...

Software that runs on the Cloud may be offloaded to clients to ease the computational effort on the server side, while clients may as well offload computations back to the cloud or to other clients if it becomes too taxing on their machines. In this paper we present how we autonomically deal with browser-to-browser operator offloading in Web Liquid Streams, a stream processing framework that le...