e21d985344
It is a self implementation, based on CBOR command. data[0] conveys the command and the contents mapped in CBOR encoding. The map uses the authConfig template, where the fist item in the map is the subcommand (enable/disable at this moment), the second is a map of the parameters, the third and fourth are the pinUvParam and pinUvProtocol. With this format only a single vendor HID command is necessary (0x41), which will be used for all my own commands, by using the command id in data[0] like with CBOR. Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
108 lines
3.5 KiB
C
108 lines
3.5 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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#include <stdlib.h>
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#include "pico/stdlib.h"
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#include "ctap2_cbor.h"
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#include "ctap.h"
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#include "ctap_hid.h"
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#include "fido.h"
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#include "hsm.h"
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#include "usb.h"
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#include "apdu.h"
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const bool _btrue = true, _bfalse = false;
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int cbor_reset();
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int cbor_get_info();
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int cbor_make_credential(const uint8_t *data, size_t len);
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int cbor_client_pin(const uint8_t *data, size_t len);
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int cbor_get_assertion(const uint8_t *data, size_t len, bool next);
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int cbor_get_next_assertion(const uint8_t *data, size_t len);
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int cbor_selection();
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int cbor_cred_mgmt(const uint8_t *data, size_t len);
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int cbor_config(const uint8_t *data, size_t len);
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int cbor_vendor(const uint8_t *data, size_t len);
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const uint8_t aaguid[16] = {0x89, 0xFB, 0x94, 0xB7, 0x06, 0xC9, 0x36, 0x73, 0x9B, 0x7E, 0x30, 0x52, 0x6D, 0x96, 0x81, 0x45}; // First 16 bytes of SHA256("Pico FIDO2")
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static const uint8_t *cbor_data = NULL;
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static size_t cbor_len = 0;
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static uint8_t cmd = 0;
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int cbor_parse(uint8_t cmd, const uint8_t *data, size_t len) {
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if (len == 0)
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return CTAP1_ERR_INVALID_LEN;
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DEBUG_DATA(data+1,len-1);
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driver_prepare_response();
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if (cmd == CTAPHID_CBOR) {
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if (data[0] == CTAP_MAKE_CREDENTIAL)
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return cbor_make_credential(data + 1, len - 1);
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if (data[0] == CTAP_GET_INFO)
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return cbor_get_info();
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else if (data[0] == CTAP_RESET)
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return cbor_reset();
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else if (data[0] == CTAP_CLIENT_PIN)
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return cbor_client_pin(data + 1, len - 1);
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else if (data[0] == CTAP_GET_ASSERTION)
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return cbor_get_assertion(data + 1, len - 1, false);
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else if (data[0] == CTAP_GET_NEXT_ASSERTION)
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return cbor_get_next_assertion(data + 1, len - 1);
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else if (data[0] == CTAP_SELECTION)
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return cbor_selection();
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else if (data[0] == CTAP_CREDENTIAL_MGMT)
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return cbor_cred_mgmt(data + 1, len - 1);
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else if (data[0] == CTAP_CONFIG)
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return cbor_config(data + 1, len - 1);
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}
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else if (cmd == CTAP_VENDOR_CBOR) {
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return cbor_vendor(data, len);
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}
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return CTAP2_ERR_INVALID_CBOR;
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}
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void cbor_thread() {
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card_init_core1();
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while (1) {
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uint32_t m;
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queue_remove_blocking(&usb_to_card_q, &m);
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if (m == EV_EXIT) {
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break;
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}
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apdu.sw = cbor_parse(cmd, cbor_data, cbor_len);
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if (apdu.sw == 0)
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DEBUG_DATA(res_APDU + 1, res_APDU_size);
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finished_data_size = res_APDU_size+1;
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uint32_t flag = EV_EXEC_FINISHED;
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queue_add_blocking(&card_to_usb_q, &flag);
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}
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}
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int cbor_process(uint8_t last_cmd, const uint8_t *data, size_t len) {
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cbor_data = data;
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cbor_len = len;
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cmd = last_cmd;
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res_APDU = ctap_resp->init.data + 1;
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res_APDU_size = 0;
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return 1;
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}
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