contiki/cpu/cc2538/dev/ecc-algorithm.h
Benoît Thébaudeau f78a132395 cc2538: pka: Fix include paths breakage
The PKA drivers and examples were full of include paths missing the
appropriate prefix, or using angle brackets instead of double quotes or
the other way around.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2016-01-09 15:43:13 +01:00

179 lines
6.0 KiB
C

/*
* 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-ecc
* @{
*
* \defgroup cc2538-ecc-algo cc2538 ECC Algorithms
*
* This is a implementation of ECDH, ECDSA sign and ECDSA verify. It
* uses ecc-driver to communicate with the PKA. It uses continuations
* to free the main CPU / thread while the PKA is calculating.
*
* \note
* Only one request can be processed at a time.
* Maximal supported key length is 384bit (12 words).
* @{
*
* \file
* Header file for the cc2538 ECC Algorithms
*/
#ifndef ECC_ALGORITHM_H_
#define ECC_ALGORITHM_H_
#include "dev/bignum-driver.h"
#include "dev/ecc-driver.h"
typedef struct {
/* Containers for the State */
struct pt pt;
struct process *process;
/* Input Variables */
uint32_t a[12]; /**< Left Number */
uint32_t b[12]; /**< Right Number */
uint8_t size; /**< Length of a and b */
/* Output Variables */
uint8_t result; /**< Result Code */
} ecc_compare_state_t;
/**
* \brief Do a compare of two big numbers
*
* This function can be used for ECDH as well as
* Calculating a Public Key for ECDSA
*/
PT_THREAD(ecc_compare(ecc_compare_state_t *state));
typedef struct {
/* Containers for the State */
struct pt pt;
struct process *process;
/* Input Variables */
ecc_curve_info_t *curve_info; /**< Curve defining the CyclicGroup */
ec_point_t point_in; /**< Generator Point */
uint32_t secret[12]; /**< Secret */
/* Variables Holding intermediate data (initialized/used internally) */
uint32_t rv; /**< Address of Next Result in PKA SRAM */
/* Output Variables */
uint8_t result; /**< Result Code */
ec_point_t point_out; /**< Generated Point */
} ecc_multiply_state_t;
/**
* \brief Do a Multiplication on a EC
*
* This function can be used for ECDH as well as
* Calculating a Public Key for ECDSA
*/
PT_THREAD(ecc_multiply(ecc_multiply_state_t *state));
typedef struct {
/* Containers for the State */
struct pt pt;
struct process *process;
/* Input Variables */
ecc_curve_info_t *curve_info; /**< Curve defining the CyclicGroup */
uint32_t secret[12]; /**< Secret Key */
uint32_t k_e[12]; /**< Ephemeral Key */
uint32_t hash[12]; /**< Hash to be signed */
/* Variables Holding intermediate data (initialized/used internally) */
uint32_t rv; /**< Address of Next Result in PKA SRAM */
uint32_t k_e_inv[12]; /**< Inverted ephemeral Key */
uint32_t len; /**< Length of intermediate Result */
/* Output Variables */
uint8_t result; /**< Result Code */
ec_point_t point_r; /**< Signature R (x coordinate) */
uint32_t signature_s[24]; /**< Signature S */
} ecc_dsa_sign_state_t;
/**
* \brief Sign a Hash
*
* This function has to be called several times until the
* pt state is EXIT
* If the result code is 0 (SUCCESS) the signature can be
* read from point_r and signature_s
*/
PT_THREAD(ecc_dsa_sign(ecc_dsa_sign_state_t *state));
typedef struct {
/* Containers for the State */
struct pt pt;
struct process *process;
/* Input Variables */
ecc_curve_info_t *curve_info; /**< Curve defining the CyclicGroup */
uint32_t signature_r[12]; /**< Signature R */
uint32_t signature_s[12]; /**< Signature S */
uint32_t hash[12]; /**< Hash to be signed */
ec_point_t public; /**< Signature R (x coordinate) */
/* Variables Holding intermediate data (initialized/used internally) */
uint32_t rv; /**< Address of Next Result in PKA SRAM */
uint32_t s_inv[12]; /**< Inverted ephemeral Key */
uint32_t u1[24]; /**< Intermediate result */
uint32_t u2[24]; /**< Intermediate result */
ec_point_t p1; /**< Intermediate result */
ec_point_t p2; /**< Intermediate result */
uint32_t len; /**< Length of intermediate Result */
/* Output Variables */
uint8_t result; /**< Result Code */
} ecc_dsa_verify_state_t;
/**
* \brief Verify Signature
*
* This function has to be called several times until the
* pt state is EXIT
* If the result code is 0 (SUCCESS) the verification
* was success full.
* \note some error codes signal internal errors
* and others signal falls signatures.
*/
PT_THREAD(ecc_dsa_verify(ecc_dsa_verify_state_t *state));
#endif /* ECC_ALGORITHM_H_ */
/**
* @}
* @}
*/