Hindering reaction attacks by using monomial codes in the McEliece cryptosystem
Autor: | Santini, Paolo, Baldi, Marco, Cancellieri, Giovanni, Chiaraluce, Franco |
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Rok vydání: | 2018 |
Předmět: | |
Druh dokumentu: | Working Paper |
Popis: | In this paper we study recent reaction attacks against QC-LDPC and QC-MDPC code-based cryptosystems, which allow an opponent to recover the private parity-check matrix through its distance spectrum by observing a sufficiently high number of decryption failures. We consider a special class of codes, known as monomial codes, to form private keys with the desirable property of having a unique and complete distance spectrum. We verify that for these codes the problem of recovering the secret key from the distance spectrum is equivalent to that of finding cliques in a graph, and use this equivalence to prove that current reaction attacks are not applicable when codes of this type are used in the McEliece cryptosystem. Comment: 5 pages, 0 figures, 1 table, accepted for presentation at the 2018 IEEE International Symposium on Information Theory (ISIT) |
Databáze: | arXiv |
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