Thierry P. Berger Pierre-Louis Cayrel Philippe Gaborit Ayoub Otmani Reducing Key Length of the McEliece Cryptosystem. 77-97 2009 AFRICACRYPT http://dx.doi.org/10.1007/978-3-642-02384-2_6 conf/africacrypt/2009 db/conf/africacrypt/africacrypt2009.html#BergerCGO09