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This paper is a survey of how linear attacks can be applied on stream ciphers. It gives an overview of the development of linear attacks and a short theoretical explanation on how a linear attack on a stream cipher is typically launched today. The main part of the paper is then a more detailed description of the application of linear attacks on three stream cipher designs, namely Grain, Pomaranch,
Popular Abstract in Swedish Under de senaste årtiondena har vattenfärgen i många svenska sjöar och vattendrag ökat. Detta innebär att vattnet blir brunare, och detta fenomen benämns därför brunifiering. Brunifiering är inget unikt för Sverige, utan förekommer på åtskilliga ställen på norra halvklotet. Brunifieringen påverkar det akvatiska ekosystemet och vattnets potentiella samhällsnytta. Ur en eThe term brownification refers to the trend of increasing water color, i.e. the water becoming browner, which has been observed throughout the northern hemisphere over the last decades. Brownification has both ecological and societal implications. From an ecological point of view the impaired light climate may e.g. reduce aquatic primary production and affect predator-prey interactions within the
The novel "Reflexer" (Reflections) is the first novel in Swedish literature with a transgender person as the main character. "Reflexer" is a coming-out-novel before the genre was invented and deals with both sexual and gender identities in the early 20th century Sweden. "Reflexer" can thematically be linked to our contemporary LGBTQ literature.
Cooling is essential in all modern high-temperature gas turbines. Turbine cooling is mainly a function of gas entry temperature, which plays the key role in overall gas turbine performance. High turbine entry temperatures can be achieved through appropriate selection of blade cooling method and blade material. The semi-closed oxy-fuel combustion combined cycle (SCOC-CC) operates at the same high e
In hybrid zones genetically differentiated populations meet and interbreed. As they result from ongoing divergence and potential speciation, such zones provide opportunities to study how different factors affect this process. The hybrid zone between the all black carrion crow (Corvus corone corone) and the grey and black hooded crow (Corvus c. cornix) stretches c. 2400 km throughout Europe. I have
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Research on retail internationalization and internationalization in general acknowledges the relevance of knowledge management and organizational learning, even though there is a lack of discussion about the specific constructs and approaches that would be most fruitful. The central role of knowledge sharing in the internationalization process is rarely stressed. Furthermore, the specificities of
This chapter describes and analyzes the public relations strategies and practices of a public organization, a local rescue services, in the process of establishing credibility and building trust in multicultural areas. The trust-building efforts are a response to several years of social unrest, communicative clashes and hostile treatment between operative firemen and residents in certain areas. Th
The focus of attention in this article is that of milieux as forges for creativity and renewal. Among the milieux presented are places, corporations and research institutions. The renewal discussed here includes art, architecture, music and literature as well as science and technology. The goal of this article is to identify characteristics of importance in environments where exceptionally creativ
The spectral efficiency of a volume in a MIMO environment is analyzed. The analysis is based on a spherical mode expansion for the propagation, the radiation Q for the antennas, and Fano theory for the broadband matching
