kopia lustrzana https://github.com/conorpp/u2f-zero
111 wiersze
3.1 KiB
C
111 wiersze
3.1 KiB
C
/*
|
|
* Copyright (c) 2016, Conor Patrick
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
*
|
|
*
|
|
* These are commands are "middleware" for HID messages. So they don't need
|
|
* the HID U2F layer to be called. Thus they are custom commands not necessary for U2F.
|
|
*
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include "custom.h"
|
|
#include "bsp.h"
|
|
#include "atecc508a.h"
|
|
|
|
uint8_t custom_command(struct u2f_hid_msg * msg)
|
|
{
|
|
struct atecc_response res;
|
|
uint8_t ec;
|
|
|
|
switch(msg->pkt.init.cmd)
|
|
{
|
|
#ifdef U2F_SUPPORT_RNG_CUSTOM
|
|
case U2F_CUSTOM_GET_RNG:
|
|
if (atecc_send_recv(ATECC_CMD_RNG,ATECC_RNG_P1,ATECC_RNG_P2,
|
|
NULL, 0,
|
|
appdata.tmp,
|
|
sizeof(appdata.tmp), &res) == 0 )
|
|
{
|
|
memmove(msg->pkt.init.payload, res.buf, 32);
|
|
U2FHID_SET_LEN(msg, 32);
|
|
usb_write((uint8_t*)msg, 64);
|
|
}
|
|
else
|
|
{
|
|
U2FHID_SET_LEN(msg, 0);
|
|
usb_write((uint8_t*)msg, 64);
|
|
}
|
|
|
|
break;
|
|
#endif
|
|
#ifdef U2F_SUPPORT_SEED_CUSTOM
|
|
case U2F_CUSTOM_SEED_RNG:
|
|
ec = atecc_send_recv(ATECC_CMD_NONCE,ATECC_NONCE_RNG_UPDATE,0,
|
|
msg->pkt.init.payload, 20,
|
|
appdata.tmp,
|
|
sizeof(appdata.tmp), &res);
|
|
U2FHID_SET_LEN(msg, 1);
|
|
msg->pkt.init.payload[0] = ec == 0 ? 1 : 0;
|
|
usb_write((uint8_t*)msg, 64);
|
|
break;
|
|
#endif
|
|
#ifdef U2F_SUPPORT_WINK
|
|
case U2F_CUSTOM_WINK:
|
|
|
|
app_wink(U2F_COLOR_WINK);
|
|
|
|
break;
|
|
#endif
|
|
#ifdef U2F_USING_BOOTLOADER
|
|
case U2F_CONFIG_BOOTLOADER:
|
|
|
|
atecc_send_recv(ATECC_CMD_READ,
|
|
ATECC_RW_DATA, ATECC_EEPROM_DATA_SLOT(8), NULL, 0,
|
|
appdata.tmp, sizeof(appdata.tmp), &res);
|
|
|
|
if (res.buf[0] == 0xff)
|
|
{
|
|
*((uint8_t SI_SEG_DATA *)0x00) = 0xA5;
|
|
RSTSRC = RSTSRC_SWRSF__SET | RSTSRC_PORSF__SET;
|
|
}
|
|
|
|
|
|
break;
|
|
case U2F_CONFIG_BOOTLOADER_DESTROY:
|
|
|
|
memset(appdata.tmp,0,4);
|
|
|
|
atecc_send_recv(ATECC_CMD_WRITE,
|
|
ATECC_RW_DATA, ATECC_EEPROM_DATA_SLOT(8), appdata.tmp, 4,
|
|
appdata.tmp, sizeof(appdata.tmp), &res);
|
|
|
|
break;
|
|
#endif
|
|
default:
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|