8,374 research outputs found

    PROTECTED FACTS RECOVERY USED FOR DECENTRALIZED INTERFERENCE CHARITABLE SERVICES NETWORKS

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    We present ingenious recovery of understanding by way of CE for decentralized disruption-tolerant systems were introduced where numerous key government physiques control their attributes individually. The suggested technique of key generation made up of personal key generation adopted by protocols of attribute key generation it exploits arithmetic secure two-party computation procedure to get rid of key escrow difficulty by which nobody of presidency physiques can conclude whole crucial aspects of users individually. Attribute-basis system of file encryption assists an access control above encrypted information by way of access policies among cipher-texts. We've broaden a disparity within the CE formula partly according to Beth escort et al.’s building to improve expressiveness of access control policy as opposed to construction in the novel CE system on your own. The confidentiality of understanding is cryptographically forced against interested key government physiques inside the forecasted plan. Setback of key escrow is intrinsic to make sure that key authority decrypts each cipher-text that's addressed to users in system by way of generating their secret keys at any instance and additionally the issue was resolved to make certain that privacy of stored facts are assured still underneath the hostile atmosphere where key government physiques very might be not completely reliable

    AVOIDING INTERMITTENT NET CONNECTIVITY ON BATTLE REGIONS

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    We present ingenious recovery of understanding by way of CE for decentralized disruption-tolerant systems were introduced where numerous key government physiques control their characteristics individually. The suggested types of key generation made up of personal key generation adopted by techniques of attribute key generation it exploits arithmetic secure two-party computation procedure to get rid of key escrow difficulty by which nobody of presidency physiques can conclude whole crucial areas of clients individually. Attribute-basis system of file encryption assists an access control above encoded information by way of access recommendations among cipher-texts. We've broaden a disparity within the CE formula partly according to Bettencourt et al.’s building to boost expressiveness of access control policy instead of construction inside the novel CE system on your own. The confidentiality of understanding is cryptographically forced against interested key government physiques inside the forecasted plan. Setback of key escrow is intrinsic to ensure that key authority decrypts each cipher-text that's addressed to clients in system by way of creating their secret keys at any instance and in addition the issue was resolved to make sure that privacy of stored particulars are assured still underneath the hostile atmosphere where key government physiques very can be not completely reliable

    Strong Cryptography: The Global Tide of Change

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    Encryption technology allows people using electronic networks to ensure that the messages they send remain private--secure from hackers, industrial espionage, government wiretap abuses, and spies. Encryption technology will prove vital to the future of electronic commerce. For example, thefts of nuclear secrets from U.S. national laboratories would be much less likely if the labs' commercial software had built-in encryption features that could be used to limit unauthorized access--a type of security product discouraged by export controls. For years the U.S. government has struggled unsuccessfully to control the export of encryption technology from this country. Those ineffectual controls do, however, adversely affect the competitive position of the U.S. software industry and national security. Despite the controls, powerful encryption products are increasingly available around the world. Those products include Pretty Good Privacy, which offers 128-bit encryption, and many others. This paper provides a list of Web sites where such products may be found, thus establishing beyond doubt the futility of controls. Although some of the Web sites may from time to time disappear, others will spring up in their place

    Encryption’s Importance to Economic and Infrastructure Security

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    Det övergripande syftet med den här avhandlingen var att utreda om network coopetition, samarbete mellan konkurrerande aktörer, kan öka värdeskapandet inom hälso- och sjukvården. Inom hälso- och sjukvården är network coopetition ett ämne som fått liten uppmärksamhet i tidigare studier. För att besvara syftet utvecklades en modell för network coopetition inom hälso- och sjukvården. Modellen applicerades sedan på en del av vårdkedjan för patienter i behov av neurokirurgisk vård. Resultaten från avhandlingen visar att: (1) Förutsättningarna för network coopetition i vårdkedjan för patienter i behov av neurokirurgisk vård är uppfyllda. (2) Det finns exempel på horisontell network coopetition i den studerade vårdkedjan. (3) Det existerar en diskrepans mellan hur aktörerna  ser  på  sitt  eget  och  de  andra  aktörernas  värdeskapande. (4)  Värdeskapandet bör utvärderas som ett gemensamt system där hänsyn tas till alla aktörer och utvärderas på process- nivå där hänsyn tas till alla intressenter. Dessa resultat leder fram till den övergripande slutsatsen är att network coopetition bör kunna öka värdeskapandet för högspecialiserade vårdkedjor med en stor andel inomlänspatienter.The overall purpose of this thesis was to investigate whether network coopetition, cooperation between competitive actors, can increase the value creation within the health care system. Within health care, network coopetition is a subject granted little attention in previous research. To fulfil the purpose a model for network coopetition within the health care system was developed. The model was the applied to one part of the chain of care for patients in need of neurosurgery. The results from this thesis show: (1) The conditions for network coopetition in the chain of care for patients in need of neurosurgery are fulfilled. (2) Examples of horizontal network coopetition have been found in the studied chain of care. (3) There is an existing discrepancy between how each actor recognizes its own and the other actors’ value creation. (4) The value creation ought to be evaluated as a common system where all actors are taken into account and at a process level where all stakeholders are considered. These results supports the final conclusion that network coopetition ought to be able to increase the value creation for highly specialized chain of cares with a large share of within-county patients

    The Myth of Superiority of American Encryption Products

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    Encryption software and hardware use sophisticated mathematical algorithms to encipher a message so that only the intended recipient may read it. Fearing that criminals and terrorists will use encryption to evade authorities, the United States now restricts the export of encryption products with key lengths of more than 56 bits. The controls are futile, because strong encryption products are readily available overseas. Foreign-made encryption products are as good as, or better than, U.S.-made products. U.S. cryptographers have no monopoly on the mathematical knowledge and methods used to create strong encryption. Powerful encryption symmetric-key technologies developed in other countries include IDEA and GOST. Researchers in New Zealand have developed very strong public-key encryption systems. As patents on strong algorithms of U.S. origin expire, researchers in other countries will gain additional opportunities to develop strong encryption technology based on those algorithms

    Secure spontaneous emergency access to personal health record

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    We propose a system which enables access to the user's Personal Health Record (PHR) in the event of emergency. The access typically occurs in an ad-hoc and spontaneous manner and the user is usually unconscious, hence rendering the unavailability of the user's password to access the PHR. The proposed system includes a smart card carried by the user at all time and it is personalized with a pseudo secret, an URL to the PHR Server, a secret key shared with the PHR Server and a number of redemption tokens generated using a hash chain. In each emergency session, a one-time use redemption token is issued by the smart card, allowing the emergency doctor to retrieve the user's PHR upon successful authentication of his credentials and validation of the redemption token. The server returns the PHR encrypted with a one-time session key which can only be decrypted by the emergency doctor. The devised interaction protocol to facilitate emergency access to the user's PHR is secure and efficient

    The Risks of Key Recovery, Key Escrow, and Trusted Third-Party Encryption

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    A variety of "key recovery," "key escrow," and "trusted third-party" encryption requirements have been suggested in recent years by government agencies seeking to conduct covert surveillance within the changing environments brought about by new technologies. This report examines the fundamental properties of these requirements and attempts to outline the technical risks, costs, and implications of deploying systems that provide government access to encryption keys
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