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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 <http://www.gnu.org/licenses/>.
*/
/*!
* \file
*
* \addtogroup keyid
*
* \brief DNSSEC key ID manipulation.
*
* The module contains auxiliary functions for manipulation with key IDs.
*
* Example:
*
* ~~~~~ {.c}
*
* char *key_id = "ef26672cafede0732dd18fba6488fa390b5589af";
* assert(dnssec_keyid_is_valid(key_id));
*
* char copy[DNSSEC_KEY_ID_SIZE + 1] = { 0 };
* memcpy(copy, key_id, sizeof(copy));
* for (int i = 0; i < DNSSEC_KEY_ID_SIZE; i++) {
* copy[i] = toupper((unsigned char)copy[i]);
* }
*
* assert(dnssec_keyid_equal(key_id, copy));
*
* ~~~~~
*
* @{
*/
#pragma once
#include <stdint.h>
#include <stdbool.h>
/*!
* Length of the key ID in presentation form (ASCII).
*/
#define DNSSEC_KEYID_SIZE 40
/*!
* Length of the key ID in internal form (binary).
*/
#define DNSSEC_KEYID_BINARY_SIZE 20
/*!
* Check if a provided string is a valid key ID string.
*/
bool dnssec_keyid_is_valid(const char *id);
/*!
* Normalize the key ID string.
*/
void dnssec_keyid_normalize(char *id);
/*!
* Create a normalized copy if the key ID.
*/
char *dnssec_keyid_copy(const char *id);
/*!
* Check if two key IDs are equal.
*/
bool dnssec_keyid_equal(const char *one, const char *two);
/*! @} */
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