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/* SPDX-License-Identifier: MIT */
/*
* MIT License
*
* Copyright © 2021 Wesley Ellis (https://github.com/tahnok)
* Copyright © 2021-2022 Joey Castillo <joeycastillo@utexas.edu>
* Copyright © 2022 Alexsander Akers <me@a2.io>
* Copyright © 2022 Jack Bond-Preston <jackbondpreston@outlook.com>
* Copyright © 2023 Alex Utter <ooterness@gmail.com>
* Copyright © 2024 Matheus Afonso Martins Moreira <matheus.a.m.moreira@gmail.com> (https://www.matheusmoreira.com/)
* Copyright © 2024 Max Zettlmeißl <max@zettlmeissl.de>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef TOTP_FACE_H_
#define TOTP_FACE_H_
/*
* TOTP face
* Time-based one-time password (TOTP) generator
*
* Generate one-time passwords often used for two-factor authentication.
* The secret key must be set by hand, by editing "totp_face.c".
*
* Available algorithms:
* o SHA1 (most TOTP codes use this)
* o SHA224
* o SHA256
* o SHA384
* o SHA512
*
* Instructions:
* o Find your secret key(s) and convert them to the required format.
* o Use https://cryptii.com/pipes/base32-to-hex to convert base32 to hex
* o Use https://github.com/susam/mintotp to generate test codes for verification
* o Edit global variables in "totp_face.c" to configure your stored keys:
* o "keys", "key_sizes", "timesteps", and "algorithms" set the
* cryptographic parameters for each secret key.
* o "labels" sets the two-letter label for each key
* (This replaces the day-of-week indicator)
* o Once finished, remove the two provided examples.
*
* If you have more than one secret key, press ALARM to cycle through them.
* Press LIGHT to cycle in the other direction or keep it pressed longer to
* activate the light.
*/
#include "movement.h"
typedef struct {
uint32_t timestamp;
uint8_t steps;
uint32_t current_code;
uint8_t current_index;
uint8_t *current_decoded_key;
size_t current_decoded_key_length;
} totp_state_t;
void totp_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr);
void totp_face_activate(movement_settings_t *settings, void *context);
bool totp_face_loop(movement_event_t event, movement_settings_t *settings, void *context);
void totp_face_resign(movement_settings_t *settings, void *context);
#define totp_face ((const watch_face_t){ \
totp_face_setup, \
totp_face_activate, \
totp_face_loop, \
totp_face_resign, \
NULL, \
})
#endif // TOTP_FACE_H_
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