2,323 research outputs found

    Extracting Cryptographic Keys from .NET Applications

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    In the absence of specialized encryption hardware,cryptographic operations must be performed in main memory.As such,it is common place for cyber criminals to examine the content of main memory with a view to retrieving high-value data in plaintext form and/or the associated decryption key.In this paper,the author presents a number of simple methods for identifying and extracting cryptographic keys from memory dumps of software applications that utilize the Microsoft .NET Framework,as well as sourcecode level countermeasures to protect against same.Given the EXE file of an application and a basic knowledge of the cryptographic libraries utilized in the .NET Framework,the author shows how to create a memory dump of a running application and how to extract cryptographic keys from same using WinDBG - without any prior knowledge of the cryptographic key utilized.Whilst the proof-of-concept application utilized as part of this paper uses an implementation of the DES cipher,it should be noted that the steps shown can be utilized against all three generations of symmetric and asymmetric ciphers supported within the .NET Framework

    An Analysis of Semicircular Channel Backscattering Interferometry Through Ray Tracing Simulations

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    Recent backscattering interferometry studies utilise a single channel microfluidic system, typically approximately semicircular in cross-section. Here, we present a complete ray tracing model for on-chip backscattering interferometry with a semicircular cross-section, including the dependence upon polarisation and angle of incidence. The full model is validated and utilised to calculate the expected fringe patterns and sensitivities observed under both normal and oblique angles of incidence. Comparison with experimental data from approximately semicircular channels using the parameters stated shows that they cannot be explained using a semicircular geometry. The disagreement does not impact on the validity of the experimental data, but highlights that the optical mechanisms behind the various modalities of backscattering interferometry would benefit from clarification. From the analysis presented here, we conclude that for reasons of ease of analysis, data quality, and sensitivity for a given radius, capillary-based backscattering interferometry affords numerous benefits over on-chip backscattering interferometry

    The Knowledge Development Box: An Overview

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    Finance Act 2015 introduced the Knowledge Development Box (KDB). The broad objective of the KDB is to promote innovation and provide an incentive whereby profits arising from patented inventions, copyrighted software and certain other specific asset classes can effectively be taxed at a reduced rate of 6.25%

    Research & Development Tax Credit

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    Ireland’s R&D tax credit system is ofmajor benefit to both multinational companies and SMEs operating in Ireland. The R&D tax credit was first introduced in Finance Act 2004 and offers a company undertaking R&D in Ireland a significant tax break, representing a potential 25% refund of costs incurred.This expenditure is also allowable as a Corporation Tax deduction, giving an effective deduction of 37.5% in a company’s tax liability

    Accelerated capital allowances: An overview

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    ACA is based on the existing capital allowances tax structure or wear and tear allowance, for plants and machinery. Claiming the ACA is carried out the same way as for the standard capital allowances. Organisations who invest in eligible energy-efficient capital equipment can deduct the full cost of the equipment from their profits in the year of purchase. This reduces the taxable profit in year one by the full cost of the equipment

    Water, Climate, and Social Change in a Fragile Landscape

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    We present here and in the companion papers an analysis of sustainability in the Middle Rio Grande region of the U.S.-Mexico border and propose an interdisciplinary research agenda focused on the coupled human and natural dimensions of water resources sustainability in the face of climate and social change in an international border region. Key threats to water sustainability in the Middle Rio Grande River region include: (1) increasing salinization of surface and ground water, (2) increasing water demand from a growing population in the El Paso/Ciudad Juarez area on top of an already high base demand from irrigated agriculture, (3) water quality impacts from agricultural, municipal, and industrial discharges to the river, (4) changing regional climate that portends increased frequency and intensity of droughts interspersed with more intensive rainfall and flooding events, and (5) disparate water planning and management systems between different states in the U.S. and between the U.S. and Mexico. In addition to these challenges, there is an increasing demand from a significant regional population who is (and has been historically) underserved in terms of access to affordable potable water. To address these challenges to water resources sustainability, we have focused on: (1) the determinants of resilience and transformability in an ecological/social setting on an international border and how they can be measured and predicted; and (2) the drivers of change ... what are they (climate, social, etc.) and how are they impacting the coupled human and natural dimensions of water sustainability on the border? To tackle these challenges, we propose a research agenda based on a complex systems approach that focuses on the linkages and feedbacks of the natural, built/managed, and social dimensions of the surface and groundwater budget of the region. The approach that we propose incorporates elements of systems analysis, complexity science, and the use of modeling tools such as scenario planning and back-casting to link the quantitative with the qualitative. This approach is unique for our region, as are our bi-national focus and our conceptualization of water capital . In particular, the concept of water capital provides the basis for a new interdisciplinary paradigm that integrates social, economic, and natural sectors within a systems framework in order to understand and characterize water resources sustainability. This proposed approach would not only provide a framework for water sustainability decision making for our bi-national region at the local, state, and federal levels, but could serve as a model for similar border regions and/or international rivers in arid and semi-arid regions in the Middle East, Africa, Asia, and Latin America
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