/*********************************************************************************
 *      Copyright:  (C) 2020 LingYun IoT System Studio
 *                  All rights reserved.
 *
 *       Filename:  encrypto.c
 *    Description:  This file 
 *                 
 *        Version:  1.0.0(2020年04月04日)
 *         Author:  Guo Wenxue <guowenxue@gmail.com>
 *      ChangeLog:  1, Release initial version on "2020年04月04日 21时02分36秒"
 *                 
 ********************************************************************************/

#include <stdio.h>
#include <string.h>

#include "encrypto.h"

int       g_var = 0;

static int test(void)
{
    return 0;
}

int encrypto(char *str, char *ciphertxt, int size) 
{
    int i;

    test();

    if(!str || !ciphertxt || size<strlen(str))
    {
        printf("%s:%d %s(): Invalid input arguments\n", __FILE__, __LINE__, __FUNCTION__);
        return -1;
    }

    for(i=0; i<strlen(str); i++)
    {
        ciphertxt[i]=str[i]+1;
    }


    g_var ++;

    return 0;
}


int decrypto(char *ciphertxt, char *text, int size)
{
    int i;

    if( !ciphertxt || !text || size<strlen(ciphertxt) )
    {
        printf("%s:%d %s(): Invalid input arguments\n", __FILE__, __LINE__, __FUNCTION__);
        return -1;
    }

    for(i=0; i<strlen(ciphertxt); i++)
    {
        text[i]=ciphertxt[i]-1;
    }

    return 0;
}