63 lines
2.8 KiB
C
63 lines
2.8 KiB
C
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/******************************************************************************
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*
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* Copyright (C) 2006-2015 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* This file contains simple pairing algorithms
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*
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******************************************************************************/
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#pragma once
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#include "bt_types.h"
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/* Type definitions */
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typedef unsigned long DWORD;
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#define DWORD_BITS 32
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#define DWORD_BYTES 4
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#define DWORD_BITS_SHIFT 5
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#define KEY_LENGTH_DWORDS_P192 6
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#define KEY_LENGTH_DWORDS_P256 8
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/* Arithmetic Operations */
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int multiprecision_compare(DWORD *a, DWORD *b, uint32_t keyLength);
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int multiprecision_iszero(DWORD *a, uint32_t keyLength);
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void multiprecision_init(DWORD *c, uint32_t keyLength);
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void multiprecision_copy(DWORD *c, DWORD *a, uint32_t keyLength);
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UINT32 multiprecision_dword_bits (DWORD a);
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UINT32 multiprecision_most_signdwords(DWORD *a, uint32_t keyLength);
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UINT32 multiprecision_most_signbits(DWORD *a, uint32_t keyLength);
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void multiprecision_inv_mod(DWORD *aminus, DWORD *a, uint32_t keyLength);
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DWORD multiprecision_add(DWORD *c, DWORD *a, DWORD *b, uint32_t keyLength); // c=a+b
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void multiprecision_add_mod(DWORD *c, DWORD *a, DWORD *b, uint32_t keyLength);
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DWORD multiprecision_sub(DWORD *c, DWORD *a, DWORD *b, uint32_t keyLength); // c=a-b
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void multiprecision_sub_mod(DWORD *c, DWORD *a, DWORD *b, uint32_t keyLength);
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void multiprecision_rshift(DWORD *c, DWORD *a, uint32_t keyLength); // c=a>>1, return carrier
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void multiprecision_lshift_mod(DWORD *c, DWORD *a, uint32_t keyLength); // c=a<<b, return carrier
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DWORD multiprecision_lshift(DWORD *c, DWORD *a, uint32_t keyLength); // c=a<<b, return carrier
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void multiprecision_mult(DWORD *c, DWORD *a, DWORD *b, uint32_t keyLength); // c=a*b
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void multiprecision_mersenns_mult_mod(DWORD *c, DWORD *a, DWORD *b, uint32_t keyLength);
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void multiprecision_mersenns_squa_mod(DWORD *c, DWORD *a, uint32_t keyLength);
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DWORD multiprecision_lshift(DWORD *c, DWORD *a, uint32_t keyLength);
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void multiprecision_mult(DWORD *c, DWORD *a, DWORD *b, uint32_t keyLength);
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void multiprecision_fast_mod(DWORD *c, DWORD *a);
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void multiprecision_fast_mod_P256(DWORD *c, DWORD *a);
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