| /******************************************************************************* |
| * Filename: rom_crypto.c |
| * Revised: 2018-09-17 08:57:21 +0200 (Mon, 17 Sep 2018) |
| * Revision: 52619 |
| * |
| * Description: This is the implementation for the API to the ECC functions |
| * built into ROM on the CC13x2/CC26x2. |
| * |
| * Copyright (c) 2015 - 2017, Texas Instruments Incorporated |
| * 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. |
| * |
| * 3) Neither the name of the ORGANIZATION 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. |
| * |
| *******************************************************************************/ |
| |
| #include <stdint.h> |
| #include "rom_crypto.h" |
| |
| |
| ////////////////////////////////////* ECC *//////////////////////////////////// |
| #ifdef ECC_PRIME_NIST256_CURVE |
| //#define TEST_NIST256 |
| //#define PARAM_P NIST256_p; |
| #define PARAM_P 0x100257d4; |
| |
| //#define PARAM_R NIST256_r; |
| #define PARAM_R 0x100257f8; |
| |
| //#define PARAM_A NIST256_a; |
| #define PARAM_A 0x1002581c; |
| |
| //#define PARAM_B NIST256_b; |
| #define PARAM_B 0x10025840; |
| |
| //#define PARAM_GX NIST256_Gx; |
| #define PARAM_GX 0x10025864; |
| |
| //#define PARAM_GY NIST256_Gy; |
| #define PARAM_GY 0x10025888; |
| |
| #endif |
| |
| |
| //***************************************************************************** |
| // ECC_initialize |
| //***************************************************************************** |
| void |
| ECC_initialize(uint32_t *pWorkzone) |
| { |
| // Initialize curve parameters |
| //data_p = (uint32_t *)PARAM_P; |
| *((uint32_t **)0x20000138) = (uint32_t *)PARAM_P; |
| |
| //data_r = (uint32_t *)PARAM_R; |
| *((uint32_t **)0x2000013c) = (uint32_t *)PARAM_R; |
| |
| //data_a = (uint32_t *)PARAM_A; |
| *((uint32_t **)0x20000140) = (uint32_t *)PARAM_A; |
| |
| //data_b = (uint32_t *)PARAM_B; |
| *((uint32_t **)0x20000144) = (uint32_t *)PARAM_B; |
| |
| //data_Gx = (uint32_t *)PARAM_GX; |
| *((uint32_t **)0x2000012c) = (uint32_t *)PARAM_GX; |
| |
| //data_Gy = (uint32_t *)PARAM_GY; |
| *((uint32_t **)0x20000130) = (uint32_t *)PARAM_GY; |
| |
| // Initialize window size |
| //win = (uint8_t) ECC_WINDOW_SIZE; |
| *((uint8_t *)0x20000148) = (uint8_t) ECC_WINDOW_SIZE; |
| |
| // Initialize work zone |
| //workzone = (uint32_t *) pWorkzone; |
| *((uint32_t **)0x20000134) = (uint32_t *) pWorkzone; |
| } |
| |
| typedef uint8_t(*ecc_keygen_t)(uint32_t *, uint32_t *,uint32_t *, uint32_t *); |
| ecc_keygen_t ecc_generatekey = (ecc_keygen_t)(0x1001f94d); |
| |
| typedef uint8_t(*ecdsa_sign_t)(uint32_t *, uint32_t *,uint32_t *, uint32_t *, uint32_t *); |
| ecdsa_sign_t ecc_ecdsa_sign = (ecdsa_sign_t)(0x10010381); |
| |
| typedef uint8_t(*ecdsa_verify_t)(uint32_t *, uint32_t *,uint32_t *, uint32_t *, uint32_t *); |
| ecdsa_verify_t ecc_ecdsa_verify = (ecdsa_verify_t)(0x1000c805); |
| |
| typedef uint8_t(*ecdh_computeSharedSecret_t)(uint32_t *, uint32_t *,uint32_t *, uint32_t *, uint32_t *); |
| ecdh_computeSharedSecret_t ecdh_computeSharedSecret = (ecdh_computeSharedSecret_t)(0x10023485); |
| |
| //***************************************************************************** |
| // ECC_generateKey |
| //***************************************************************************** |
| uint8_t |
| ECC_generateKey(uint32_t *randString, uint32_t *privateKey, |
| uint32_t *publicKey_x, uint32_t *publicKey_y) |
| { |
| return (uint8_t)ecc_generatekey((uint32_t*)randString, (uint32_t*)privateKey, |
| (uint32_t*)publicKey_x, (uint32_t*)publicKey_y); |
| |
| } |
| |
| //***************************************************************************** |
| // ECC_ECDSA_sign |
| //***************************************************************************** |
| uint8_t |
| ECC_ECDSA_sign(uint32_t *secretKey, uint32_t *text, uint32_t *randString, |
| uint32_t *sign1, uint32_t *sign2) |
| { |
| return (uint8_t)ecc_ecdsa_sign((uint32_t*)secretKey, (uint32_t*)text, (uint32_t*)randString, |
| (uint32_t*)sign1, (uint32_t*)sign2); |
| } |
| |
| //***************************************************************************** |
| // ECC_ECDSA_verify |
| //***************************************************************************** |
| uint8_t |
| ECC_ECDSA_verify(uint32_t *publicKey_x, uint32_t *publicKey_y, |
| uint32_t *text, uint32_t *sign1, uint32_t *sign2) |
| { |
| return (uint8_t)ecc_ecdsa_verify((uint32_t*)publicKey_x, (uint32_t*)publicKey_y, (uint32_t*)text, |
| (uint32_t*)sign1, (uint32_t*)sign2); |
| } |
| |
| //***************************************************************************** |
| // ECC_ECDH_computeSharedSecret |
| //***************************************************************************** |
| uint8_t |
| ECC_ECDH_computeSharedSecret(uint32_t *privateKey, uint32_t *publicKey_x, |
| uint32_t *publicKey_y, uint32_t *sharedSecret_x, |
| uint32_t *sharedSecret_y) |
| { |
| return (uint8_t)ecdh_computeSharedSecret((uint32_t*)privateKey, (uint32_t*)publicKey_x, |
| (uint32_t*)publicKey_y, (uint32_t*)sharedSecret_x, |
| (uint32_t*)sharedSecret_y); |
| } |