Enhanced Public Key Security for the McEliece Cryptosystem

Marco Baldi, Marco Bianchi, Franco Chiaraluce, Joachim Rosenthal, Davide Schipani
2014 Journal of Cryptology  
This paper studies a variant of the McEliece cryptosystem able to ensure that the code used as the public key is no longer permutationequivalent to the secret code. This increases the security level of the public key, thus opening the way for reconsidering the adoption of classical families of codes, like Reed-Solomon codes, that have been longly excluded from the McEliece cryptosystem for security reasons. It is well known that codes of these classes are able to yield a reduction in the key
more » ... e or, equivalently, an increased level of security against information set decoding; so, these are the main advantages of the proposed solution. We also describe possible vulnerabilities and attacks related to the considered system, and show what design choices are best suited to avoid them.
doi:10.1007/s00145-014-9187-8 fatcat:pmm5kpz5jfeelo7uah74ualdlu