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/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include <stdlib.h>
#include "libdnssec/binary.h"
#include "contrib/wire_ctx.h"
/*!
* Size needed to write unsigned number in unsigned encoding.
*/
size_t bignum_size_u(const dnssec_binary_t *value);
/*!
* Size needed to write unsigned number in signed encoding.
*
* Signed encoding expects the MSB to be zero.
*/
size_t bignum_size_s(const dnssec_binary_t *value);
/*!
* Write unsigned number on a fixed width in a big-endian byte order.
*
* The destination size has to be set properly to accommodate used encoding.
*/
void bignum_write(wire_ctx_t *ctx, size_t width, const dnssec_binary_t *value);
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