BigNumLibInternal.h File Reference

#include "BigNumLib.h"

Go to the source code of this file.

Functions
OC_BN_WORD	BigNumWordMul64 (OUT OC_BN_WORD *Hi, IN OC_BN_WORD A, IN OC_BN_WORD B)
OC_BN_WORD	BigNumWordMul (OUT OC_BN_WORD *Hi, IN OC_BN_WORD A, IN OC_BN_WORD B)
VOID	BigNumSub (IN OUT OC_BN_WORD *Result, IN OC_BN_NUM_WORDS NumWords, IN CONST OC_BN_WORD *A, IN CONST OC_BN_WORD *B)
VOID	BigNumOrWord (IN OUT OC_BN_WORD *A, IN OC_BN_NUM_WORDS NumWords, IN OC_BN_WORD Value, IN UINTN Exponent)
VOID	BigNumMod (IN OUT OC_BN_WORD *Result, IN OC_BN_NUM_WORDS NumWordsRest, IN CONST OC_BN_WORD *A, IN OC_BN_NUM_WORDS NumWordsA, IN CONST OC_BN_WORD *B, IN OC_BN_WORD *Scratch)
INTN	BigNumCmp (IN CONST OC_BN_WORD *A, IN OC_BN_NUM_WORDS NumWords, IN CONST OC_BN_WORD *B)
OC_BN_NUM_BITS	BigNumSignificantBits (IN CONST OC_BN_WORD *A, IN OC_BN_NUM_WORDS NumWords)

Function Documentation

BigNumCmp()

INTN BigNumCmp	(	IN CONST OC_BN_WORD *	A,
		IN OC_BN_NUM_WORDS	NumWords,
		IN CONST OC_BN_WORD *	B )

Returns the relative order of A and B. A and B must have the same precision.

Parameters

[in]	A	The first number to compare.
[in]	NumWords	The number of Words to compare.
[in]	B	The second number to compare.

Return values

<	0 A is lower than B.
0	A is as big as B.
>	0 A is greater than B.

Definition at line 540 of file BigNumPrimitives.c.

BigNumMod()

VOID BigNumMod	(	IN OUT OC_BN_WORD *	Result,
		IN OC_BN_NUM_WORDS	NumWordsRest,
		IN CONST OC_BN_WORD *	A,
		IN OC_BN_NUM_WORDS	NumWordsA,
		IN CONST OC_BN_WORD *	B,
		IN OC_BN_WORD *	Scratch )

Calculates the remainder of A and B.

Parameters

[in,out]	Result	The buffer to return the result into.
[in]	NumWordsRest	The number of Words of Result and B.
[in]	A	The dividend.
[in]	NumWordsA	The number of Words of A.
[in]	B	The divisor.
[in]	Scratch	Scratch buffer 2 * OC_BN_SIZE (NumWordsA).

Definition at line 566 of file BigNumPrimitives.c.

BigNumOrWord()

VOID BigNumOrWord	(	IN OUT OC_BN_WORD *	A,
		IN OC_BN_NUM_WORDS	NumWords,
		IN OC_BN_WORD	Value,
		IN UINTN	Exponent )

Calculates the binary union of A and (Value << Exponent).

Parameters

[in,out]	A	The number to OR with and store the result into.
[in]	NumWords	The number of Words of A.
[in]	Value	The Word value to OR with.
[in]	Exponent	The Word shift exponent.

Definition at line 518 of file BigNumPrimitives.c.

BigNumSignificantBits()

OC_BN_NUM_BITS BigNumSignificantBits	(	IN CONST OC_BN_WORD *	A,
		IN OC_BN_NUM_WORDS	NumWords )

Returns the number of significant bits in a number. Logically matches OpenSSL's BN_num_bits.

Parameters

[in]	A	The number to gather the number of significant bits of.
[in]	NumWords	The number of Words of A.

Returns

The number of significant bits in A.

Definition at line 503 of file BigNumPrimitives.c.

BigNumSub()

VOID BigNumSub	(	IN OUT OC_BN_WORD *	Result,
		IN OC_BN_NUM_WORDS	NumWords,
		IN CONST OC_BN_WORD *	A,
		IN CONST OC_BN_WORD *	B )

Calulates the difference of A and B. A must have the same precision as B. Result must have a precision at most as bit as A and B.

Parameters

[in,out]	Result	The buffer to return the result into.
[in]	NumWords	The number of Words of Result, minimum number of Words of A and B.
[in]	A	The minuend.
[in]	B	The subtrahend.

Definition at line 404 of file BigNumPrimitives.c.

BigNumWordMul()

OC_BN_WORD BigNumWordMul	(	OUT OC_BN_WORD *	Hi,
		IN OC_BN_WORD	A,
		IN OC_BN_WORD	B )

Calculates the product of A and B.

Parameters

[out]	Hi	Buffer in which the high Word of the result is returned.
[in]	A	The multiplicant.
[in]	B	The multiplier.

Returns

The low Word of the result.

Definition at line 379 of file BigNumPrimitives.c.

BigNumWordMul64()

OC_BN_WORD BigNumWordMul64	(	OUT OC_BN_WORD *	Hi,
		IN OC_BN_WORD	A,
		IN OC_BN_WORD	B )

Copyright (C) 2019, Download-Fritz. All rights reserved.

This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. Calculates the product of A and B.

Parameters

[out]	Hi	Buffer in which the high Word of the result is returned.
[in]	A	The multiplicant.
[in]	B	The multiplier.

Returns

The low Word of the result.

Definition at line 17 of file BigNumWordMul64.c.