“…This drawback motivated the search for secure code-based cryptosystems with more manageable key sizes [19,23,29,39]. Unfortunately, most of the proposed McEliece variants using codes other than Goppa codes have turned out to be insecure [14,22,25,27,35,40]. Using QC-MDPC codes to replace Goppa codes in the McEliece cryptosystem was first suggested by Misoczki et al in 2013 [26], and appears to be a promising choice.…”