BN_mod_inverse — compute inverse modulo n Synopsis #include <openssl/bn.h> BIGNUM *BN_mod_inverse(BIGNUM *r, BIGNUM *a, const BIGNUM *n, BN_CTX *ctx); DESCRIPTION BN_mod_inverse() computes the inverse ofamodulonplaces the result inr((a*r)%n==1). Ifris NULL, a newBIGNUMis cr...