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Unconditionally Secure Ciphers with a Short Key for a Source with Unknown Statistics. / Ryabko, Boris.
в: Entropy, Том 25, № 10, 1406, 30.09.2023.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Unconditionally Secure Ciphers with a Short Key for a Source with Unknown Statistics
AU - Ryabko, Boris
PY - 2023/9/30
Y1 - 2023/9/30
N2 - We consider the problem of constructing an unconditionally secure cipher with a short key for the case where the probability distribution of encrypted messages is unknown. Note that unconditional security means that an adversary with no computational constraints can only obtain a negligible amount of information ("leakage") about an encrypted message (without knowing the key). Here, we consider the case of a priori (partially) unknown message source statistics. More specifically, the message source probability distribution belongs to a given family of distributions. We propose an unconditionally secure cipher for this case. As an example, one can consider constructing a single cipher for texts written in any of the languages of the European Union. That is, the message to be encrypted could be written in any of these languages.
AB - We consider the problem of constructing an unconditionally secure cipher with a short key for the case where the probability distribution of encrypted messages is unknown. Note that unconditional security means that an adversary with no computational constraints can only obtain a negligible amount of information ("leakage") about an encrypted message (without knowing the key). Here, we consider the case of a priori (partially) unknown message source statistics. More specifically, the message source probability distribution belongs to a given family of distributions. We propose an unconditionally secure cipher for this case. As an example, one can consider constructing a single cipher for texts written in any of the languages of the European Union. That is, the message to be encrypted could be written in any of these languages.
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85175377481&origin=inward&txGid=9c628e8b5dc603892f284cc948109d3c
U2 - 10.3390/e25101406
DO - 10.3390/e25101406
M3 - Article
C2 - 37895527
VL - 25
JO - Entropy
JF - Entropy
SN - 1099-4300
IS - 10
M1 - 1406
ER -
ID: 57535434