#include?“stdafx.h“

#include?“des.h“
#include?“table.h“
#include?

void?des::IP（?Data64?&word?）
{
	ROR（?word.a?4?）;
	ROR（?word.b?3?）;
	ROR（?word.c?2?）;
	ROR（?word.d?1?）;
	ROL（?word.e?1?）;
	ROL（?word.f?2?）;
	ROL（?word.g?3?）;
	ROL（?word.h?4?）;
}

void?des::IP_1（?Data64?&word?）
{
	ROR（?word.h?4?）;
	ROR（?word.g?3?）;
	ROR（?word.f?2?）;
	ROR（?word.e?1?）;
	ROL（?word.d?1?）;
	ROL（?word.c?2?）;
	ROL（?word.b?3?）;
	ROL（?word.a?4?）;
}

void?des::extend_R（?Data32?&R?Data48?&E_R?）
{
	E_R.a?=?R.d;
	E_R.b?=?R.d;
	E_R.c?=?R.c;
	E_R.d?=?R.b;
	E_R.e?=?R.a;
	E_R.f?=?R.a;
}

void?des::switch_key_lib（?Data64?&k_lib?）
{
	unsigned?char?i;
	unsigned?char?*p*p_cpy;
	unsigned?char?temp;
	unsigned?char?mn;
	unsigned?char?cd;
	Data64?k_lib_cpy;

	k_lib.a?=?（?k_lib.b?<	k_lib.b?=?（?k_lib.c?<>?1?）?&?0x3F?）;
	k_lib.c?=?（?k_lib.d?<>?2?）?&?0x1F?）;
	k_lib.d?=?（?k_lib.e?<>?3?）?&?0x0F?）;
	k_lib.e?=?（?k_lib.f?<>?4?）?&?0x07?）;
	k_lib.f?=?（?k_lib.g?<>?5?）?&?0x03?）;
	k_lib.g?=?（?k_lib.h?<>?6?）?&?0x01?）;
	k_lib.h?=?0;

	k_lib_cpy?=?k_lib;

	p?=?（?unsigned?char?*?）&k_lib;
	p_cpy?=?（?unsigned?char?*?）&k_lib_cpy;

	
	for（?i?=?0;?i?	{
		m?=?position_table[?switch_k_table[?i?]?-?1?][?0?];//獲得要換位所在的字符串的號(hào)碼
		n?=?position_table[?switch_k_table[?i?]?-?1?][?1?];//獲得要換位所在字符串中的位置

		c?=?position_table[?i?][?0?];
		d?=?position_table[?i?][?1?];

		temp?=?p_cpy[?m?]?&?and_table_get[?n?];//獲得要換位的二進(jìn)制位

		if（?n?>?d?）
		{
			p[?c?]?=?（?p[?c?]?&?and_table_out[?d?]?）?+?（?temp?>>?（?n?-?d?）?）;//將要換位移到被換位所對(duì)應(yīng)的位置
		}
		else
		{
			p[?c?]?=?（?p[?c?]?&?and_table_out[?d?]?）?+?（?temp?<		}
	}
}

void?des::rotate_key_lib（?Data64?&k_lib?char?i?）
{
	unsigned?char?temp1temp2;

????temp1?=?k_lib.c?>>?（?8?-?i?）;
	k_lib.c?=?（?k_lib.c?<>?（?8?-?i?）?）;
	k_lib.b?=?（?k_lib.b?<>?（?8?-?i?）?）;
	k_lib.a?=?（?k_lib.a?<>?（?4?-?i?）?）?&?and_rotate_inside[?0?][?i?-?1?]?）;

	temp2?=?k_lib.e?<	k_lib.e?=?（?k_lib.e?>>?i?）?+?（?k_lib.f?<	k_lib.f?=?（?k_lib.f?>>?i?）?+?（?k_lib.g?<	k_lib.g?=?（?k_lib.g?>>?i?）?+?（?（?k_lib.d?<	
	k_lib.d?=?temp2?+?（?（?k_lib.d?>>?i?）?&?and_rotate_inside[?1?][?i?+?1?]?）?+?（?（?k_lib.d?<}

void?des::get_key_from_lib（?Data48?&key?Data64?&k_lib?）//key為所求值，k_lib為未知值
{
	/*key.a?=?k_lib.b;
	key.b?=?k_lib.c;
	key.c?=?k_lib.d;
	key.d?=?k_lib.e;
	key.e?=?k_lib.f;
	key.f?=?k_lib.g;*/
	char?i;
	unsigned?char?temp;
	unsigned?char?mnab;
	unsigned?char?*p_key*p_lib;

	memset（?&key?0?6?）;//先將key清零

	p_key?=?（?unsigned?char?*?）&key;
	
	p_lib?=?（?unsigned?char?*?）&k_lib;
	for（?i?=?0;?i?