10,570 research outputs found
Encryptionâs Importance to Economic and Infrastructure Security
Det övergripande syftet med den hĂ€r avhandlingen var att utreda om network coopetition, samarbete mellan konkurrerande aktörer, kan öka vĂ€rdeskapandet inom hĂ€lso- och sjukvĂ„rden. Inom hĂ€lso- och sjukvĂ„rden Ă€r network coopetition ett Ă€mne som fĂ„tt liten uppmĂ€rksamhet i tidigare studier. För att besvara syftet utvecklades en modell för network coopetition inom hĂ€lso- och sjukvĂ„rden. Modellen applicerades sedan pĂ„ en del av vĂ„rdkedjan för patienter i behov av neurokirurgisk vĂ„rd. Resultaten frĂ„n avhandlingen visar att: (1) FörutsĂ€ttningarna för network coopetition i vĂ„rdkedjan för patienter i behov av neurokirurgisk vĂ„rd Ă€r uppfyllda. (2) Det finns exempel pĂ„ horisontell network coopetition i den studerade vĂ„rdkedjan. (3) Det existerar en diskrepans mellan hur aktörerna ser pĂ„Â sitt eget och de andra aktörernas vĂ€rdeskapande. (4) VĂ€rdeskapandet bör utvĂ€rderas som ett gemensamt system dĂ€r hĂ€nsyn tas till alla aktörer och utvĂ€rderas pĂ„ process- nivĂ„ dĂ€r hĂ€nsyn tas till alla intressenter. Dessa resultat leder fram till den övergripande slutsatsen Ă€r att network coopetition bör kunna öka vĂ€rdeskapandet för högspecialiserade vĂ„rdkedjor med en stor andel inomlĂ€nspatienter.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 actorsâ 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
Review on DNA Cryptography
Cryptography is the science that secures data and communication over the
network by applying mathematics and logic to design strong encryption methods.
In the modern era of e-business and e-commerce the protection of
confidentiality, integrity and availability (CIA triad) of stored information
as well as of transmitted data is very crucial. DNA molecules, having the
capacity to store, process and transmit information, inspires the idea of DNA
cryptography. This combination of the chemical characteristics of biological
DNA sequences and classical cryptography ensures the non-vulnerable
transmission of data. In this paper we have reviewed the present state of art
of DNA cryptography.Comment: 31 pages, 12 figures, 6 table
Software Grand Exposure: SGX Cache Attacks Are Practical
Side-channel information leakage is a known limitation of SGX. Researchers
have demonstrated that secret-dependent information can be extracted from
enclave execution through page-fault access patterns. Consequently, various
recent research efforts are actively seeking countermeasures to SGX
side-channel attacks. It is widely assumed that SGX may be vulnerable to other
side channels, such as cache access pattern monitoring, as well. However, prior
to our work, the practicality and the extent of such information leakage was
not studied.
In this paper we demonstrate that cache-based attacks are indeed a serious
threat to the confidentiality of SGX-protected programs. Our goal was to design
an attack that is hard to mitigate using known defenses, and therefore we mount
our attack without interrupting enclave execution. This approach has major
technical challenges, since the existing cache monitoring techniques experience
significant noise if the victim process is not interrupted. We designed and
implemented novel attack techniques to reduce this noise by leveraging the
capabilities of the privileged adversary. Our attacks are able to recover
confidential information from SGX enclaves, which we illustrate in two example
cases: extraction of an entire RSA-2048 key during RSA decryption, and
detection of specific human genome sequences during genomic indexing. We show
that our attacks are more effective than previous cache attacks and harder to
mitigate than previous SGX side-channel attacks
Personal Data Security: Divergent Standards in the European Union and the United States
This Note argues that the U.S. Government should discontinue all attempts to establish EES as the de facto encryption standard in the United States because the economic disadvantages associated with widespread implementation of EES outweigh the advantages this advanced data security system provides. Part I discusses the EU\u27s legislative efforts to ensure personal data security and analyzes the evolution of encryption technology in the United States. Part II examines the methods employed by the U.S. Government to establish EES as the de facto U.S. encryption standard. Part III argues that the U.S. Government should terminate its effort to establish EES as the de facto U.S. encryption standard and institute an alternative standard that ensures continued U.S. participation in the international marketplace
Agri-Food Traceability Management using a RFID System with Privacy Protection
In this paper an agri-food traceability system based on public key cryptography and Radio Frequency Identification (RFID) technology is proposed. In order to guarantee safety in food, an efficient tracking and tracing system is required. RFID devices allow recording all useful information for traceability directly on the commodity. The security issues are discussed and two different methods based on public cryptography are proposed and evaluated. The first algorithm uses a nested RSA based structure to improve security, while the second also provides authenticity of data. An experimental analysis demonstrated that the proposed system is well suitable on PDAs to
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