See http://www.pqcrypto.org/www.springer.com/cda/content/document/cda_downloaddocument/9783540887010-c1.pdf http://www.pqcrypto.org/www.springer.com/cda/content

See http://www.pqcrypto.org/www.springer.com/cda/content/document/cda_downloaddocument/9783540887010-c1.pdf http://www.pqcrypto.org/www.springer.com/cda/content/documen... for more info.