Techniques to Audit and Certify the Long Term Integrity of Digital Archives

A large portion of the government, business, cultural, and scientific digital data being created today needs to be archived and preserved for future use of periods ranging from a few years to decades and sometimes centuries. A fundamental requirement for a long term archive is to set up mechanisms that will ensure the authenticity of the holdings of the archive. In this paper, we develop a new methodology to address the integrity of long term archives using rigorous cryptographic techniques. Our approach involves the generation of a small-size integrity token for each digital object to be archived, and some cryptographic summary information based on all the objects handled within a dynamic time period. We present a framework that enables the continuous auditing of the holdings of the archive, as well as auditing upon access, depending on the policy set by the archive. Moreover, an independent auditor will be able to verify the integrity of every version of an archived digital object as well as link the current version to the original form of the object when it was ingested into the archive. Using this approach, a prototype system called ACE (Auditing Control Environment) has been built and tested. ACE is scalable and cost effective, and is completely independent of the archive's underlying architecture

Preservación a largo plazo de la información digita

En la presente investigación se estudian los principales elementos conceptuales de la preservación digital, así­ como las vulnerabilidades y amenazas a las que se enfrentan los documentos en formato digital. Se describen las estrategias y los sistemas más utilizados para garantizar la preservación a largo plazo de la información digital. Se especifica el lenguaje, las herramientas y las tecnologí­as utilizadas para la implementación de la propuesta de solución. Se realiza una descripción del modelo OAIS con las funcionalidades necesarias para lograr la preservación a largo plazo. Se hace además una descripción de la metodologí­a utilizada ITIL con sus procesos y finalmente se hace una caracterización del sistema de preservación digital a implantar, para ello se describen sus principales funcionalidades y se hace un análisis de su arquitectura, identificándose los elementos que deben personalizarse para su adaptación a las necesidades de la Biblioteca de la UCI. Con la implantación del sistema de preservación en la biblioteca, la información almacenada en la misma quedará salvaguardada durante largos perí­odos de tiempo ante cualquier amenaza que atente contra la integridad, accesibilidad y disponibilidad de la mism

With renewables for energy security

Taking into account the possible future exhaustion of fossil energy sources, the actual and near danger of climate change, the drastic increase of the greenhouse gases in the last 200 years, as well as the growing need for sustainable development, consumption and liveable environment, the increasing necessity of renewable energy sources becomes clear. Utilization of these energy sources have to acquire a bigger role in the field of energy supply, in order to enhance the energy security of Hungary, to decline the energy import dependence, to reduce the negative environmental impacts, and to recover the economy. The world’s hunger for energy is growing exponentially; this is why it is crucial to establish feasibility scenarios in the next decades, which are able to meet these expectations, and to increase the safety of the energy supply

With renewables for energy security

Taking into account the possible future exhaustion of fossil energy sources, the actual and near danger of climate change, the drastic increase of the greenhouse gases in the last 200 years, as well as the growing need for sustainable development, consumption and liveable environment, the increasing necessity of renewable energy sources becomes clear. Utilization of these energy sources have to acquire a bigger role in the field of energy supply, in order to enhance the energy security of Hungary, to decline the energy import dependence, to reduce the negative environmental impacts, and to recover the economy. The world’s hunger for energy is growing exponentially; this is why it is crucial to establish feasibility scenarios in the next decades, which are able to meet these expectations, and to increase the safety of the energy supply