/****************************************************************************** * * Copyright (C) 2006-2015 Broadcom Corporation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ******************************************************************************//* ... */ /****************************************************************************** * * This file contains simple pairing algorithms * ******************************************************************************//* ... */ #pragma once #include "stack/bt_types.h" /* Type definitions */ typedef unsigned long DWORD; #define DWORD_BITS 32 #define DWORD_BYTES 4 #define DWORD_BITS_SHIFT 5 #define KEY_LENGTH_DWORDS_P192 6 #define KEY_LENGTH_DWORDS_P256 85 defines /* Arithmetic Operations */ int multiprecision_compare(DWORD *a, DWORD *b, uint32_t keyLength); int multiprecision_iszero(DWORD *a, uint32_t keyLength); void multiprecision_init(DWORD *c, uint32_t keyLength); void multiprecision_copy(DWORD *c, DWORD *a, uint32_t keyLength); UINT32 multiprecision_dword_bits (DWORD a); UINT32 multiprecision_most_signdwords(DWORD *a, uint32_t keyLength); UINT32 multiprecision_most_signbits(DWORD *a, uint32_t keyLength); void multiprecision_inv_mod(DWORD *aminus, DWORD *a, uint32_t keyLength); DWORD multiprecision_add(DWORD *c, DWORD *a, DWORD *b, uint32_t keyLength); // c=a+b void multiprecision_add_mod(DWORD *c, DWORD *a, DWORD *b, uint32_t keyLength); DWORD multiprecision_sub(DWORD *c, DWORD *a, DWORD *b, uint32_t keyLength); // c=a-b void multiprecision_sub_mod(DWORD *c, DWORD *a, DWORD *b, uint32_t keyLength); void multiprecision_rshift(DWORD *c, DWORD *a, uint32_t keyLength); // c=a>>1, return carrier void multiprecision_lshift_mod(DWORD *c, DWORD *a, uint32_t keyLength); // c=a<<b, return carrier DWORD multiprecision_lshift(DWORD *c, DWORD *a, uint32_t keyLength); // c=a<<b, return carrier void multiprecision_mult(DWORD *c, DWORD *a, DWORD *b, uint32_t keyLength); // c=a*b void multiprecision_mersenns_mult_mod(DWORD *c, DWORD *a, DWORD *b, uint32_t keyLength); void multiprecision_mersenns_squa_mod(DWORD *c, DWORD *a, uint32_t keyLength); DWORD multiprecision_lshift(DWORD *c, DWORD *a, uint32_t keyLength); void multiprecision_mult(DWORD *c, DWORD *a, DWORD *b, uint32_t keyLength); void multiprecision_fast_mod(DWORD *c, DWORD *a); void multiprecision_fast_mod_P256(DWORD *c, DWORD *a);