1 /****************************************************************************** 2 * 3 * Copyright (C) 2006-2015 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 /******************************************************************************* 20 * 21 * This file contains simple pairing algorithms 22 * 23 ******************************************************************************/ 24 #pragma once 25 26 #include "bt_types.h" 27 28 #define DWORD_BITS 32 29 #define DWORD_BYTES 4 30 #define DWORD_BITS_SHIFT 5 31 32 #define KEY_LENGTH_DWORDS_P192 6 33 #define KEY_LENGTH_DWORDS_P256 8 34 /* Arithmetic Operations */ 35 36 int multiprecision_compare(uint32_t* a, uint32_t* b, uint32_t keyLength); 37 int multiprecision_iszero(uint32_t* a, uint32_t keyLength); 38 void multiprecision_init(uint32_t* c, uint32_t keyLength); 39 void multiprecision_copy(uint32_t* c, uint32_t* a, uint32_t keyLength); 40 uint32_t multiprecision_dword_bits(uint32_t a); 41 uint32_t multiprecision_most_signdwords(uint32_t* a, uint32_t keyLength); 42 uint32_t multiprecision_most_signbits(uint32_t* a, uint32_t keyLength); 43 void multiprecision_inv_mod(uint32_t* aminus, uint32_t* a, uint32_t keyLength); 44 uint32_t multiprecision_add(uint32_t* c, uint32_t* a, uint32_t* b, 45 uint32_t keyLength); // c=a+b 46 void multiprecision_add_mod(uint32_t* c, uint32_t* a, uint32_t* b, 47 uint32_t keyLength); 48 uint32_t multiprecision_sub(uint32_t* c, uint32_t* a, uint32_t* b, 49 uint32_t keyLength); // c=a-b 50 void multiprecision_sub_mod(uint32_t* c, uint32_t* a, uint32_t* b, 51 uint32_t keyLength); 52 void multiprecision_rshift(uint32_t* c, uint32_t* a, 53 uint32_t keyLength); // c=a>>1, return carrier 54 void multiprecision_lshift_mod(uint32_t* c, uint32_t* a, 55 uint32_t keyLength); // c=a<<b, return carrier 56 uint32_t multiprecision_lshift(uint32_t* c, uint32_t* a, 57 uint32_t keyLength); // c=a<<b, return carrier 58 void multiprecision_mult(uint32_t* c, uint32_t* a, uint32_t* b, 59 uint32_t keyLength); // c=a*b 60 void multiprecision_mersenns_mult_mod(uint32_t* c, uint32_t* a, uint32_t* b, 61 uint32_t keyLength); 62 void multiprecision_mersenns_squa_mod(uint32_t* c, uint32_t* a, 63 uint32_t keyLength); 64 uint32_t multiprecision_lshift(uint32_t* c, uint32_t* a, uint32_t keyLength); 65 void multiprecision_mult(uint32_t* c, uint32_t* a, uint32_t* b, 66 uint32_t keyLength); 67 void multiprecision_fast_mod(uint32_t* c, uint32_t* a); 68 void multiprecision_fast_mod_P256(uint32_t* c, uint32_t* a); 69