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- Ljupco Kocarev, Marjan Sterjev, Attila Fekete, Gábor Vattay
- Chaos
- 2004

We propose public-key encryption algorithms based on chaotic maps, which are generalization of well-known and commercially used algorithms: Rivest-Shamir-Adleman (RSA), ElGamal, and Rabin. For the case of generalized RSA algorithm we discuss in detail its software implementation and properties. We show that our algorithm is as secure as RSA algorithm.

- Attila Fekete, Gábor Vattay
- GLOBECOM
- 2001

We analyze a model of heavily utilized bottleneck buffer in this paper. We show that the nature of traffic leaving the buffer is determined by the buffer length/number of TCPs ratio. If this ratio is above a critical value, TCP can stay in the congestion avoidance phase and it can generate periodic traffic after a transient period. If the ratio is below a… (More)

- Leonidas Lymberopoulos, Mary Grammatikou, +5 authors Basil S. Maglaris
- Future Internet Assembly
- 2012

The EC FP7/FIRE STREP project NOVI Network Innovation over Virtualized Infrastructures explores efficient approaches to compose virtualized e-Infrastructures towards a holistic Future Internet (FI) cloud service. Resources belonging to various levels, i.e. networking, storage and processing are in principle managed by separate yet inter-working providers.… (More)

- István Csabai, Attila Fekete, +7 authors Felix Espina
- TRIDENTCOM
- 2010

ETOMIC is a network traffic measurement platform with high precision GPS-synchronized monitoring nodes. The infrastructure is publicly available to the network research community, supporting advanced experimental techniques by providing high precision hardware equipments and a Central Management System. Researchers can deploy their own active measurement… (More)

- Attila Fekete, Gábor Vattay, Márton Pósfai
- Physical review. E, Statistical, nonlinear, and…
- 2009

In this Rapid Communication we present an analytic study of sampled networks in the case of some important shortest-path sampling models. We present analytic formulas for the probability of edge discovery in the case of an evolving and a static network model. We also show that the number of discovered edges in a finite network scales much more slowly than… (More)

- Attila Fekete, Gábor Vattay, Ljupco Kocarev
- Physical review. E, Statistical, nonlinear, and…
- 2006

Node betweenness has been studied recently by a number of authors, but until now less attention has been paid to edge betweenness. In this paper, we present an exact analytic study of edge betweenness in evolving scale-free and non-scale-free trees. We aim at the probability distribution of edge betweenness under the condition that a local property, the… (More)

- Attila Fekete, Gábor Vattay
- GLOBECOM
- 2002

The central result of this paper is an analytic formula describing the packet loss probability in a buffer as a function of the length of the buffer and the probability of external packet loss. This formula makes it possible to calculate the total loss along a multi-buffer, multi-link route. Also, new types of congestion window distributions are discovered… (More)

- Attila Fekete
- ArXiv
- 2008

Two important aspects of the Internet, namely the properties of its topology and the characteristics of its data traffic, have attracted growing attention of the physics community. My thesis has considered problems of both aspects. First I studied the stochastic behavior of TCP, the primary algorithm governing traffic in the current Internet, in an… (More)

- Attila Fekete
- Gynaecologia. International monthly review of…
- 1956

- Norbert Barankai, Attila Fekete, Gábor Vattay
- Physical review. E, Statistical, nonlinear, and…
- 2012

Recently, De Martino et al. [J. Stat. Mech. (2009) P08023; Phys. Rev. E 79, 015101 (2009)] have presented a general framework for the study of transportation phenomena on random networks with annealed disorder. One of their most significant achievements was a deeper understanding of the phase transition from the uncongested to the congested phase at a… (More)