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. ...

Whitenoise is a stream cipher with specification given at http://eprint.iacr.org/2003/249. In this paper, we show that Whitenoise is extremely weak. It can be broken by solving about 80,000 linear equations. And only about 80,000 bytes keystream are needed in the attack.

1 This report describes the first part of the evaluation of the Whitenoise cryptosystem. The second part of the evaluation is related to the evaluation of the key management facility.

In this paper the reflection and transmission of waves by a threedimensional random medium is studied in a high-frequency, whitenoise, and paraxial regime. The limit system derives from the acoustic wave equations and is described by a coupled system of random Schrödinger equations driven by a Brownian field whose covariance is determined by the two-point statistics of the fluctuations of the r...

This paper establishes the global asymptotic equivalence between the nonparametric regression with random design and the white noise under sharp smoothness conditions on an unknown regression or drift function. The asymptotic equivalence is established by constructing explicit equivalence mappings between the nonparametric regression and the whitenoise experiments, which provide synthetic obser...

Two circuit design techniques improve the robustness of Whitenoise encryption algorithm implementation against side-channel attacks based on dynamic and/or static power consumption. The first technique aims to conceal the power consumption and has linear cost. The second technique aims to randomize the power consumption and has quadratic cost. These techniques are not mutual exclusive; their sy...

Abstruct-The determination of the state-space equations of a time-varying finite-dimensional linear system with a prescribed output covariance matrix is considered when the system is excited by Gaussian whitenoise inputs. It is shown that a symmetric state covariance matrix provides the key link between the statespace equations of a system and the system output covariance matrix. Furthermore, s...

Using a stochastic differential equation (SDE) approach, we examine the dynamics of the continental-scale water balance in the central United States. Whitenoise and colored-noise versions of the model are developed based on analysis of atmospheric data from the National Center for Environmental Prediction (NCEP) reanalysis project and long-term records of precipitation and soil moisture. Improv...

Volterra and Wiener theories provide the concepts of linear, bilinear, tri-linear, etc., kernels, which upon convolution with the excitation force, can be employed to represent the response of a nonlinear system. Based on these theories, higher-order frequency response functions (FRFs) are employed to estimate the nonlinear stiffness of rolling element bearings, supporting a rigid rotor. The ro...

A new discrete-time reverse-correlation scheme for the study of visual neurons is proposed. The visual stimulus is generated by drawing with uniform probability, at each refresh time, an image from a finite set S of orthonormal images. We show that if the neuron can be modeled as a spatiotemporal linear filter followed by a static nonlinearity, the cross-correlation between the input image sequ...