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67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/*
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* This file is part of the Pico FIDO distribution (https://github.com/polhenarejos/pico-fido).
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* Copyright (c) 2022 Pol Henarejos.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _FIDO_H_
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#define _FIDO_H_
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#include <stdlib.h>
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#include "pico/stdlib.h"
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#include "common.h"
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#include "mbedtls/ecdsa.h"
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#include "ctap_hid.h"
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#define CTAP_PUBKEY_LEN (65)
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#define KEY_PATH_LEN (32)
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#define KEY_PATH_ENTRIES (KEY_PATH_LEN / sizeof(uint32_t))
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#define SHA256_DIGEST_LENGTH (32)
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#define KEY_HANDLE_LEN (KEY_PATH_LEN + SHA256_DIGEST_LENGTH)
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extern int scan_files();
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extern int derive_key(const uint8_t *app_id, bool new_key, uint8_t *key_handle, int, mbedtls_ecdsa_context *key);
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extern bool wait_button_pressed();
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extern CTAPHID_FRAME *ctap_req, *ctap_resp;
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#define FIDO2_ALG_ES256 -7 //ECDSA-SHA256 P256
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#define FIDO2_ALG_EDDSA -8 //EdDSA
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#define FIDO2_ALG_ES384 -35 //ECDSA-SHA384 P384
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#define FIDO2_ALG_ES512 -36 //ECDSA-SHA512 P521
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#define FIDO2_CURVE_P256 1
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#define FIDO2_CURVE_P384 2
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#define FIDO2_CURVE_P521 3
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#define FIDO2_CURVE_X25519 4
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#define FIDO2_CURVE_X448 5
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#define FIDO2_CURVE_ED25519 6
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#define FIDO2_CURVE_ED448 7
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#define FIDO2_CURVE_P256K1 8
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#define FIDO2_AUT_FLAG_UP 0x1
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#define FIDO2_AUT_FLAG_UV 0x4
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#define FIDO2_AUT_FLAG_AT 0x40
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#define FIDO2_AUT_FLAG_ED 0x80
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typedef struct known_app {
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const uint8_t *rp_id_hash;
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const char *label;
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const bool *use_sign_count;
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const bool *use_self_attestation;
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} known_app_t;
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extern const known_app_t *find_app_by_rp_id_hash(const uint8_t *rp_id_hash);
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#endif //_FIDO_H
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