/*-------------------------------------------------------------------
*F8-Confidentiality?Algorithm
*-------------------------------------------------------------------
*
*A?sample?implementation?of?f8the?3GPP?Confidentiality?algorithm.
*
*This?has?been?coded?for?claritynot?necessarily?for?efficiency.
*
*This?will?compile?and?run?correctly?on?both?Intel（little?endian）
*and?Sparc（big?endian）machines.（Compilers?used?supported?32-bit?ints）
*
*Version?1.0?05?November?1999
*
*-------------------------------------------------------------------*/
#include“kasumi.h“
#include
/*---------------------------------------------------------
*f8（）
*Given?keycountbearerdirectiondata
*and?bit?length?encrypt?the?bit?stream
*---------------------------------------------------------*/
void?f8（u8*keyint?countint?bearerint?diru8*dataint?length）
{
	REGISTER64?A;/*the?modifier*/
	REGISTER64?temp;/*The?working?register*/
	int?in;
	u8?ModKey[16];/*Modified?key*/
	u16?blkcnt;/*The?block?counter*/
	/*Start?by?building?our?global?modifier*/
	temp.b32[0]=temp.b32[1]=0;
	A.b32[0]=A.b32[1]=0;
	/*initialise?register?in?an?endian?correct?manner*/
	A.b8[0]=（u8）（count>>24）;
	A.b8[1]=（u8）（count>>16）;
	A.b8[2]=（u8）（count>>8）;
	A.b8[3]=（u8）（count）;
	A.b8[4]=（u8）（bearer<<3）;
	A.b8[4]|=（u8）（dir<<2）;
	/*Construct?the?modified?key?and?then“kasumi“A*/
	for（n=0;n<16;++n）
		ModKey[n]=（u8）（key[n]^0x55）;
	KeySchedule（ModKey）;
	Kasumi（A.b8）;/*First?encryption?to?create?modifier*/
	/*Final?initialisation?steps*/
	blkcnt=0;
	KeySchedule（key）;
	/*Now?run?the?block?cipher*/
	while（length>0）
	{
		/*First?we?calculate?the?next?64-bits?of?keystream*/
		/*XOR?in?A?and?BLKCNT?to?last?value*/
		temp.b32[0]^=A.b32[0];
		temp.b32[1]^=A.b32[1];
		temp.b8[7]^=（u8）blkcnt;
		temp.b8[6]^=（u8）（blkcnt>>8）;
		/*KASUMI?it?to?produce?the?next?block?of?keystream*/
		Kasumi（temp.b8）;
		/*Setto?the?number?of?bytes?of?input?data*
		*we?have?to?modify.（=8?if?length<=64）*/
		if（length>=64）
			n=8;
		else
			n=（length+7）/8;
		/*XOR?the?keystream?with?the?input?data?stream*/
		for（i=0;i			*data++^=temp.b8[i];
		length-=64;/*done?another?64?bits*/
		++blkcnt;/*increment?BLKCNT*/
	}
}
/*-----------------------------------------------------------
*e?n?d?o?f?f?8.c
*-----------------------------------------------------------*/

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????2805??2009-07-02?15:32??算法源碼\Debug\f8.obj

?????文件???????3461??2009-07-02?15:40??算法源碼\Debug\f9.obj

?????文件???????8547??2009-07-02?15:25??算法源碼\Debug\kasumi.obj

?????文件?????159834??2009-07-02?15:58??算法源碼\Debug\main.exe

?????文件?????179352??2009-07-02?15:58??算法源碼\Debug\main.ilk

?????文件???????4469??2009-07-02?15:58??算法源碼\Debug\main.obj

?????文件?????164560??2009-07-02?15:32??算法源碼\Debug\main.pch

?????文件?????435200??2009-07-02?15:58??算法源碼\Debug\main.pdb

?????文件??????41984??2009-07-02?15:58??算法源碼\Debug\vc60.idb

?????文件??????53248??2009-07-02?15:58??算法源碼\Debug\vc60.pdb

?????文件???????2390??2009-07-02?15:26??算法源碼\f8.c

?????文件???????3272??2009-07-02?15:40??算法源碼\f9.c

?????文件???????7717??2009-07-02?15:22??算法源碼\kasumi.c

?????文件????????592??2009-07-02?15:04??算法源碼\kasumi.h

?????文件????????509??2009-07-02?15:58??算法源碼\main.c

?????文件???????3611??2009-07-02?15:26??算法源碼\main.dsp

?????文件????????533??2009-07-02?15:23??算法源碼\main.dsw

?????文件??????50176??2009-07-02?15:58??算法源碼\main.ncb

?????文件??????54784??2009-07-02?15:58??算法源碼\main.opt

?????文件????????242??2009-07-02?15:58??算法源碼\main.plg

?????目錄??????????0??2009-07-02?15:58??算法源碼\Debug

?????目錄??????????0??2009-07-02?15:58??算法源碼

-----------?---------??----------?-----??----

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