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/*
* mgmt-keywrap.c
* --------------
* CLI functions to manage the keywrap core
*
* Copyright (c) 2019, NORDUnet A/S All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - 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.
*
* - Neither the name of the NORDUnet nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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
* HOLDER 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.
*/
#define HAL_OK CMSIS_HAL_OK
#include "stm-init.h"
#include "mgmt-cli.h"
#include "mgmt-keywrap.h"
#undef HAL_OK
#define HAL_OK LIBHAL_OK
#include "hal.h"
#include "hal_internal.h"
#undef HAL_OK
#include <stdlib.h>
#include <string.h>
static int cmd_keywrap_core(struct cli_def *cli, const char *command, char *argv[], int argc)
{
if (argc == 1) {
int onoff = -1;
if (strcmp(argv[0], "on") == 0)
onoff = 1;
else if (strcmp(argv[0], "off") == 0)
onoff = 0;
if (onoff >= 0) {
int ret = hal_aes_use_keywrap_core(onoff);
if (ret)
cli_print(cli, "keywrap core enabled");
else if (onoff)
cli_print(cli, "keywrap core not found");
else
cli_print(cli, "keywrap core disabled");
return CLI_OK;
}
}
cli_print(cli, "Syntax: %s <on|off>", command);
return CLI_ERROR;
}
static int cmd_keywrap_stats_show(struct cli_def *cli, const char *command, char *argv[], int argc)
{
command = command;
argv = argv;
argc = argc;
unsigned load, skip;
hal_error_t err;
if ((err = hal_aes_keywrap_get_stats(&load, &skip)) != LIBHAL_OK) {
cli_print(cli, "Error getting stats: %s", hal_error_string(err));
return CLI_ERROR;
}
cli_print(cli, "loaded %u, skipped %u", load, skip);
return CLI_OK;
}
static int cmd_keywrap_stats_reset(struct cli_def *cli, const char *command, char *argv[], int argc)
{
cli = cli;
command = command;
argv = argv;
argc = argc;
hal_aes_keywrap_reset_stats();
return CLI_OK;
}
static int cmd_keywrap_zero(struct cli_def *cli, const char *command, char *argv[], int argc)
{
command = command;
argv = argv;
argc = argc;
hal_error_t err;
if ((err = hal_aes_keywrap_zero(NULL)) != LIBHAL_OK) {
cli_print(cli, "Error zeroing KEK: %s", hal_error_string(err));
return CLI_ERROR;
}
return CLI_OK;
}
static int cmd_keywrap_timeout(struct cli_def *cli, const char *command, char *argv[], int argc)
{
if (argc != 1) {
errout:
cli_print(cli, "Syntax: %s <cycle count>", command);
return CLI_ERROR;
}
char *endptr;
unsigned long n = strtoul(argv[0], &endptr, 0);
if (n == 0 && endptr == argv[0])
/* no valid digits */
goto errout;
hal_error_t err;
if ((err = hal_aes_keywrap_set_timeout(NULL, n)) != LIBHAL_OK) {
cli_print(cli, "Error setting KEK timeout: %s", hal_error_string(err));
return CLI_ERROR;
}
return CLI_OK;
}
void configure_cli_keywrap(struct cli_def *cli)
{
struct cli_command *c_keywrap = cli_register_command(cli, NULL, "keywrap", NULL, 0, 0, NULL);
/* keywrap core */
cli_register_command(cli, c_keywrap, "core", cmd_keywrap_core, 0, 0, "Toggle use of the keywrap core");
struct cli_command *c_stats = cli_register_command(cli, c_keywrap, "stats", NULL, 0, 0, NULL);
/* keywrap stats show */
cli_register_command(cli, c_stats, "show", cmd_keywrap_stats_show, 0, 0, "Show the keywrap KEK stats");
/* keywrap stats reset */
cli_register_command(cli, c_stats, "reset", cmd_keywrap_stats_reset, 0, 0, "Reset the keywrap KEK stats");
/* keywrap zero */
cli_register_command(cli, c_keywrap, "zero", cmd_keywrap_zero, 0, 0, "Zero the KEK in the keywrap core");
/* keywrap timeout */
cli_register_command(cli, c_keywrap, "timeout", cmd_keywrap_timeout, 0, 0, "Set the KEK timeout in the keywrap core");
}
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