/* * (C) 2015 Jack Lloyd * * Botan is released under the Simplified BSD License (see license.txt) */ #include "tests.h" #if defined(BOTAN_HAS_MCELIECE) #include #endif namespace Botan_Tests { namespace { #if defined(BOTAN_HAS_MCELIECE) class GF2m_Tests : public Test { public: std::vector run() override { std::vector results; results.push_back(test_gf_overflow()); return results; } private: Test::Result test_gf_overflow() { Test::Result result("GF2m"); for(size_t degree = 2; degree <= 16; ++degree) { Botan::GF2m_Field field(degree); using Botan::gf2m; for(size_t i = 0; i <= field.gf_ord(); ++i) { gf2m a = i; result.test_eq("square vs multiply", static_cast(field.gf_square(a)), static_cast(field.gf_mul(a, a))); /* * This sequence is from the start of gf2m_decomp_rootfind_state::calc_Fxj_j_neq_0 */ { const gf2m jl_gray = field.gf_l_from_n(a); gf2m xl_j_tt_5 = field.gf_square_rr(jl_gray); const gf2m xl_gray_tt_3 = field.gf_mul_rrr(xl_j_tt_5, jl_gray); xl_j_tt_5 = field.gf_mul_rrr(xl_j_tt_5, xl_gray_tt_3); gf2m s = field.gf_mul_nrr(xl_gray_tt_3, field.gf_ord()); result.test_gte("Value less than order", field.gf_ord(), s); } } } return result; } }; BOTAN_REGISTER_TEST("gf2m", GF2m_Tests); #endif } }