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https://github.com/joeycastillo/second-movement.git
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95 lines
3.5 KiB
C
95 lines
3.5 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* MIT License
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*
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* Copyright © 2021 Wesley Ellis (https://github.com/tahnok)
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* Copyright © 2021-2022 Joey Castillo <joeycastillo@utexas.edu>
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* Copyright © 2022 Alexsander Akers <me@a2.io>
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* Copyright © 2022 Jack Bond-Preston <jackbondpreston@outlook.com>
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* Copyright © 2023 Alex Utter <ooterness@gmail.com>
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* Copyright © 2024 Matheus Afonso Martins Moreira <matheus.a.m.moreira@gmail.com> (https://www.matheusmoreira.com/)
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* Copyright © 2024 Max Zettlmeißl <max@zettlmeissl.de>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef TOTP_FACE_H_
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#define TOTP_FACE_H_
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/*
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* TOTP face
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* Time-based one-time password (TOTP) generator
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*
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* Generate one-time passwords often used for two-factor authentication.
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* The secret key must be set by hand, by editing "totp_face.c".
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*
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* Available algorithms:
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* o SHA1 (most TOTP codes use this)
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* o SHA224
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* o SHA256
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* o SHA384
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* o SHA512
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*
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* Instructions:
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* o Find your secret key(s).
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* o Use https://github.com/susam/mintotp to generate test codes for
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* verification
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* o Edit global `credentials` variable in "totp_face.c" to configure your
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* TOTP credentials. The file includes two examples that you can use as a
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* reference. Credentials are added with the `CREDENTIAL` macro in the form
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* `CREDENTIAL(label, key, algorithm, timestep)` where:
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* o `label` is a 2 character label that is displayed in the weekday digits
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* to identify the TOTP credential.
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* o `key` is a string with the base32 encoded secret.
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* o `algorithm` is one of the supported hashing algorithms listed above.
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* o `timestep` is how often the TOTP refreshes in seconds. This is usually
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* 30 seconds.
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*
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* If you have more than one secret key, press ALARM to cycle through them.
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* Press LIGHT to cycle in the other direction or keep it pressed longer to
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* activate the light.
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*/
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#include "movement.h"
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typedef struct {
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uint32_t timestamp;
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uint8_t steps;
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uint32_t current_code;
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uint8_t current_index;
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uint8_t *current_decoded_key;
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size_t current_decoded_key_length;
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} totp_state_t;
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void totp_face_setup(uint8_t watch_face_index, void ** context_ptr);
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void totp_face_activate(void *context);
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bool totp_face_loop(movement_event_t event, void *context);
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void totp_face_resign(void *context);
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#define totp_face ((const watch_face_t){ \
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totp_face_setup, \
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totp_face_activate, \
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totp_face_loop, \
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totp_face_resign, \
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NULL, \
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})
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#endif // TOTP_FACE_H_
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