key := C._goboringcrypto_RSA_new()
	if key == nil {
		return nil, fail("RSA_new")
	}
	if !bigToBn(&key.n, N) ||
		!bigToBn(&key.e, E) ||
		!bigToBn(&key.d, D) ||
		!bigToBn(&key.p, P) ||
		!bigToBn(&key.q, Q) ||
		!bigToBn(&key.dmp1, Dp) ||
		!bigToBn(&key.dmq1, Dq) ||
		!bigToBn(&key.iqmp, Qinv) {
		return nil, fail("BN_bin2bn")
	}
	k := &PrivateKeyRSA{_key: key}

		panic("boringcrypto: bignum conversion failed")
	}
	return x
}

func bigToBn(bnp **C.GO_BIGNUM, b BigInt) bool {
	if *bnp != nil {
		C._goboringcrypto_BN_free(*bnp)
		*bnp = nil
	}
	if b == nil {
		return true
	}
	bn := bigToBN(b)
	if bn == nil {
		return false
	}
	*bnp = bn
	return true
}

	}
	group := C._goboringcrypto_EC_KEY_get0_group(key)
	pt := C._goboringcrypto_EC_POINT_new(group)
	if pt == nil {
		C._goboringcrypto_EC_KEY_free(key)
		return nil, fail("EC_POINT_new")
	}
	bx := bigToBN(X)
	by := bigToBN(Y)
	ok := bx != nil && by != nil && C._goboringcrypto_EC_POINT_set_affine_coordinates_GFp(group, pt, bx, by, nil) != 0 &&
		C._goboringcrypto_EC_KEY_set_public_key(key, pt) != 0
	if bx != nil {