BNerr(BN_F_BN_BLINDING_INVERT,BN_R_NOT_INITIALIZED);
BNerr(BN_F_BN_BLINDING_INVERT_EX,BN_R_NOT_INITIALIZED);
int BN_BLINDING_invert_ex(BIGNUM *n, const BIGNUM *r, BN_BLINDING *b, BN_CTX *ctx)	{	int ret;	bn_check_top(n);	if ((b->A == NULL) || (b->Ai == NULL))		{		BNerr(BN_F_BN_BLINDING_INVERT,BN_R_NOT_INITIALIZED);		return(0);		}	if (r != NULL)		ret = BN_mod_mul(n, n, r, b->mod, ctx);	else		ret = BN_mod_mul(n, n, b->Ai, b->mod, ctx);	if (ret >= 0)		{		if (!BN_BLINDING_update(b,ctx))			return(0);		}	bn_check_top(n);	return(ret);	}