diff options
| -rw-r--r-- | src/lib/pubkey/mce/gf2m_rootfind_dcmp.cpp | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/lib/pubkey/mce/gf2m_rootfind_dcmp.cpp b/src/lib/pubkey/mce/gf2m_rootfind_dcmp.cpp index 3a377a447..008da99c1 100644 --- a/src/lib/pubkey/mce/gf2m_rootfind_dcmp.cpp +++ b/src/lib/pubkey/mce/gf2m_rootfind_dcmp.cpp @@ -238,10 +238,9 @@ gf2m gf2m_decomp_rootfind_state::calc_Fxj_j_neq_0( const polyn_gf2m & sigma, gf2 gf2m sum = 0; u32bit i; std::shared_ptr<GF2m_Field> sp_field = sigma.get_sp_field(); - gf2m xl_j_tt_5i, xl_j_tt_5, xl_gray_tt_3; const gf2m jl_gray = sp_field->gf_l_from_n(j_gray); - xl_j_tt_5 = sp_field->gf_square_rr(jl_gray); - xl_gray_tt_3 = sp_field->gf_mul_rrr(xl_j_tt_5, jl_gray); + gf2m xl_j_tt_5 = sp_field->gf_square_rr(jl_gray); + gf2m xl_gray_tt_3 = sp_field->gf_mul_rrr(xl_j_tt_5, jl_gray); xl_j_tt_5 = sp_field->gf_mul_rrr(xl_j_tt_5, xl_gray_tt_3); @@ -253,13 +252,16 @@ gf2m gf2m_decomp_rootfind_state::calc_Fxj_j_neq_0( const polyn_gf2m & sigma, gf2 /* treat i = 0 special: */ sum ^= this->m_Aij[0]; /* treat i = 1 special also */ + if(this->m_outer_summands > 1) { gf2m x; - xl_j_tt_5i = xl_j_tt_5; x = sp_field->gf_mul_zrz(xl_j_tt_5, this->m_Aij[1]); /* x_j^{5i} A_i^j */ sum ^= x; } + + gf2m xl_j_tt_5i = xl_j_tt_5; + for(i = 2; i < this->m_outer_summands; i++) { gf2m x; |