ctap_utils.h

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/*
 * Copyright (C) 2021 Freie Universität Berlin
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once

 
#include <stdint.h>
#include "fido2/ctap/ctap.h"
#include "periph/gpio.h"
 
#ifdef __cplusplus
extern "C" {
#endif

void fido2_ctap_utils_wait_for_user_presence(void);

ctap_status_code_t fido2_ctap_utils_init_gpio_pin(gpio_t pin, gpio_mode_t mode, gpio_flank_t flank);

ctap_status_code_t fido2_ctap_utils_user_presence_test(void);

static inline int fido2_ctap_utils_cred_cmp(const void *k1, const void *k2)
{
    ctap_resident_key_t *_k1 = (ctap_resident_key_t *)k1;
    ctap_resident_key_t *_k2 = (ctap_resident_key_t *)k2;
 
    /* multiply by -1 because we want descending order. */
    return (_k1->id - _k2->id) * -1;
}

static inline bool fido2_ctap_utils_ks_equal(const ctap_resident_key_t *k1,
                                             const ctap_resident_key_t *k2)
{
    return memcmp(k1->rp_id_hash, k2->rp_id_hash, sizeof(k1->rp_id_hash)) == 0 &&
           memcmp(k1->user_id, k2->user_id, sizeof(k1->user_id)) == 0;
}
 
#ifdef __cplusplus
}
#endif