#include "PSDGenerate.h"

/********************************************************************************************************************
 *                                  新版密码支持BCD码                                                               *
********************************************************************************************************************/

uint64_t Scramble(uint64_t number, uint64_t max)
{
		int i = 0;
		// some random values
		uint64_t scramblers[] = { 3, 5, 7, 31, 343, 2348, 89897 };
		number += (max / 7) + 6;
		number %= max;
		// shuffle according to divisibility
		for (i = 0; i < 7; i++)
		{
				if (scramblers[i] >= max / 3) break;
				number = ((number * scramblers[i]) % max)
					+ ((number * scramblers[i]) / max);
		}


		return number % max;
}

int GetPasswordByUidCode(const uint8_t *uidcode,uint8_t* psd)
{
	uint64_t val = 0,val1 = 0;
	int i= 0;
	uint64_t ulBCDPsd = 0;

	for(i=2;i<10;i++)
	{
		val *=10;
		val += uidcode[i]-0x30;
	}
	val += uidcode[10];
	
	for(i=11;i<16;i++)
	{
		val1 *=10;
		val1 += uidcode[i]-0x30;
	}
  val = val  + val1;
  ulBCDPsd = Scramble(val, 0xFFFFFFFF);

	
	psd[0] = (ulBCDPsd&0xFF000000)>>24;
	psd[1] = (ulBCDPsd&0x00FF0000)>>16;
	psd[2] = (ulBCDPsd&0x0000FF00)>>8;
	psd[3] =  ulBCDPsd&0x000000FF;
	
	return 0;
}