| /****************************************************************************** |
| * |
| * 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 "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 8 |
| /* 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); |
| |
| |