avoid leaking exponent information through timing, BN_mod_exp_mont() will call BN_mod_exp_mont_consttime, BN_div() will call BN_div_no_branch, BN_mod_inverse() will call BN_mod_inverse_no_branch.
See Source File
avoid leaking exponent information through timing, BN_mod_exp_mont() will call BN_mod_exp_mont_consttime, BN_div() will call BN_div_no_branch, BN_mod_inverse() will call BN_mod_inverse_no_branch.