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Wyszukujesz frazę "secure key distribution" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Analiza schematów SH-GKDS
Analysis of Self-healing Group Key Distribution Schemes (SH-GKDS)
Autorzy:
Rams, T.
Pacyna, P.
Powiązania:
https://bibliotekanauki.pl/articles/298531.pdf
Data publikacji:
2011
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
bezpieczna komunikacja grupowa
dystrybucja klucza kryptograficznego
selektywna dystrybucja klucza
secure group communication
group key distribution
selective key distribution
Opis:
Artykuł przybliża techniki selektywnej dystrybucji kryptograficznego klucza grupowego w kanale rozsiewczym ze stratami. Stanowi on wprowadzenie do klasy schematów Self-healing Group Key Distribution Schemes (SH-GKDS). Przedstawiono w nim najważniejsze mechanizmy wykorzystywane w projektowaniu schematów SH-GKDS, kładąc nacisk na analizę ich właściwości pod kątem bezpieczeństwa, skalowalności oraz czasu działania systemu stosującego schemat SH-GKDS.
The paper presents techniques for selective group key distribution over an unreliable broadcast channel. It provides introduction to Self-healing Group Key Distribution Schemes (SH-GKDS), including guidelines for scheme design and analysis. The most important mechanisms used in SH-GKDS are described and analysed in terms of security, scalability and system life-time.
Źródło:
Telekomunikacja Cyfrowa : technologie i usługi; 2010-2011, 10; 26-35
1505-9405
Pojawia się w:
Telekomunikacja Cyfrowa : technologie i usługi
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enhanced secure key exchange systems based on the Johnson - Noise scheme
Autorzy:
Kish, L. B.
Powiązania:
https://bibliotekanauki.pl/articles/221578.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
information theoretic security
unconditional security
practically perfect security
secure key distribution via wire
secure smart power grid
Opis:
We introduce seven new versions of the Kirchhoff-Law-Johnson-(like)-Noise (KLJN) classical physical secure key exchange scheme and a new transient protocol for practically-perfect security. While these practical improvements offer progressively enhanced security and/or speed for non-ideal conditions, the fundamental physical laws providing the security remain the same. In the “intelligent” KLJN (iKLJN) scheme, Alice and Bob utilize the fact that they exactly know not only their own resistor value but also the stochastic time function of their own noise, which they generate before feeding it into the loop. By using this extra information, they can reduce the duration of exchanging a single bit and in this way they achieve not only higher speed but also an enhanced security because Eve's information will significantly be reduced due to smaller statistics. In the “multiple” KLJN (MKLJN) system, Alice and Bob have publicly known identical sets of different resistors with a proper, publicly known truth table about the bit-interpretation of their combination. In this new situation, for Eve to succeed, it is not enough to find out which end has the higher resistor. Eve must exactly identify the actual resistor values at both sides. In the “keyed” KLJN (KKLJN) system, by using secure communication with a formerly shared key, Alice and Bob share a proper time-dependent truth table for the bit-interpretation of the resistor situation for each secure bit exchange step during generating the next key. In this new situation, for Eve to succeed, it is not enough to find out the resistor values at the two ends. Eve must also know the former key. The remaining four KLJN schemes are the combinations of the above protocols to synergically enhance the security properties. These are: the “intelligent-multiple” (iMKLJN), the “intelligent-keyed” (iKKLJN), the “keyed-multiple” (KMKLJN) and the “intelligent-keyed-multiple” (iKMKLJN) KLJN key exchange systems. Finally, we introduce a new transient-protocol offering practically-perfect security without privacy amplification, which is not needed in practical applications but it is shown for the sake of ongoing discussions.
Źródło:
Metrology and Measurement Systems; 2013, 20, 2; 191-204
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unconditional security by the laws of classical physics
Autorzy:
Mingesz, R.
Kish, L. B.
Gingl, Z.
Granqvist, C.-G.
Wen, H.
Peper, F.
Eubanks, T.
Schmera, G.
Powiązania:
https://bibliotekanauki.pl/articles/220876.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
information theoretic security
unconditional security
secure key exchange
secure key distribution
quantum encryption
Opis:
There is an ongoing debate about the fundamental security of existing quantum key exchange schemes. This debate indicates not only that there is a problem with security but also that the meanings of perfect, imperfect, conditional and unconditional (information theoretic) security in physically secure key exchange schemes are often misunderstood. It has been shown recently that the use of two pairs of resistors with enhanced Johnsonnoise and a Kirchhoff-loop - i.e., a Kirchhoff-Law-Johnson-Noise (KLJN) protocol . for secure key distribution leads to information theoretic security levels superior to those of today's quantum key distribution. This issue is becoming particularly timely because of the recent full cracks of practical quantum communicators, as shown in numerous peer-reviewed publications. The KLJN system is briefly surveyed here with discussions about the essential questions such as (i) perfect and imperfect security characteristics of the key distribution, and (ii) how these two types of securities can be unconditional (or information theoretical).
Źródło:
Metrology and Measurement Systems; 2013, 20, 1; 3-16
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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