Mitin S.V.
Amount of key information contained in open and encrypted text sets of the symmetric randomized mceliece cryptosystem

A symmetric code cryptosystem, which is similar to the randomized (asymmetric) McEliece encryption scheme, is considered. An expression for the amount of information on the private key, which can be extracted from public and respective encrypted messages of the cryptosystem, is obtained. It is shown that with this information, the security of the symmetric cryptosystem against attacks based on the known ciphertext coincides with the security of its asymmetric counterpart. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.

Keywords: amount of information, code-based cryptography, McEliece encryption scheme, randomized code cryptosystem, Computer science, Cybernetics, Amount of information, Ciphertexts, Encrypted messages, McEliece cryptosystem, McEliece encryption scheme, Private key, Symmetric code, Symmetric crypto systems, Cryptography

Cite:
Mitin S.V. (2020). Amount of key information contained in open and encrypted text sets of the symmetric randomized mceliece cryptosystem . Cybernetics and Systems Analysis, 56 (5), 48–53. doi: https://doi.org/10.1007/s10559-020-00288-9 http://jnas.nbuv.gov.ua/article/UJRN-0001152218 [In Russian].