nes-proj/examples/platform-specific/cc2538-common/pka/ecc-verify.c

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/*
* Copyright (c) 2014, Institute for Pervasive Computing, ETH Zurich.
* All rights reserved.
*
* Author: Andreas Dröscher <contiki@anticat.ch>
*
* 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.
* 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
*/
/**
* \addtogroup cc2538-examples
* @{
*
* \defgroup cc2538-ecdsa-verify-test cc2538 ECDSA-Verify Test Project
*
* ECDSA-Verify example for CC2538-based platforms
*
* This example shows how ECDSA-Verify should be used. The example also verifies
* the ECDSA-Verify functionality.
*
* @{
*
* \file
* Example demonstrating ECDSA-Verify
*/
#include "contiki.h"
#include "dev/ecc-algorithm.h"
#include "dev/ecc-curve.h"
#include "sys/rtimer.h"
#include "sys/pt.h"
#include <string.h>
#include <stdio.h>
PROCESS(ecdsa_verify_test, "ecdsa verify test");
AUTOSTART_PROCESSES(&ecdsa_verify_test);
PROCESS_THREAD(ecdsa_verify_test, ev, data) {
PROCESS_BEGIN();
/*
* Variable for Time Measurement
*/
static rtimer_clock_t time;
/*
* Activate Engine
*/
puts("-----------------------------------------\n"
"Initializing pka...");
pka_init();
/*
* Setup Variables
*/
static ecc_dsa_verify_state_t state = {
.process = &ecdsa_verify_test,
.curve_info = &nist_p_256,
.signature_r = { 0xC3B4035F, 0x515AD0A6, 0xBF375DCA, 0x0CC1E997,
0x7F54FDCD, 0x04D3FECA, 0xB9E396B9, 0x515C3D6E },
.signature_s = { 0x5366B1AB, 0x0F1DBF46, 0xB0C8D3C4, 0xDB755B6F,
0xB9BF9243, 0xE644A8BE, 0x55159A59, 0x6F9E52A6 },
.hash = { 0x65637572, 0x20612073, 0x68206F66, 0x20686173,
0x69732061, 0x68697320, 0x6F2C2054, 0x48616C6C },
};
static uint32_t public_x[8] = { 0x5fa58f52, 0xe47cfbf2, 0x300c28c5, 0x6375ba10,
0x62684e91, 0xda0a9a8f, 0xf9f2ed29, 0x36dfe2c6 };
static uint32_t public_y[8] = { 0xc772f829, 0x4fabc36f, 0x09daed0b, 0xe93f9872,
0x35a7cfab, 0x5a3c7869, 0xde1ab878, 0x71a0d4fc };
memcpy(state.public.x, public_x, sizeof(public_x));
memcpy(state.public.y, public_y, sizeof(public_y));
/*
* Verify
*/
time = RTIMER_NOW();
PT_SPAWN(&(ecdsa_verify_test.pt), &(state.pt), ecc_dsa_verify(&state));
time = RTIMER_NOW() - time;
printf("ecc_dsa_verify(), %lu ms\n",
(uint32_t)((uint64_t)time * 1000 / RTIMER_SECOND));
if(state.result) {
puts("signature verification failed");
} else {
puts("signature verification OK");
}
puts("-----------------------------------------\n"
"Disabling pka...");
pka_disable();
puts("Done!");
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
/**
* @}
* @}
*/