OpenRG Deobfuscate in C

http://www.zibri.org/ Did this in a java script. I ported it to C. Have fun deobfuscating during the holidays!

#include 
#include 

char szDeobfuscated[4096];
int key[] = {86, -12, -17, 80,   52, 169, 
-17, 107, 85,  75,   3,  60, 154,   1, 
120, 179,-3,  177,  61, 211, 155, 210,
 203, 159,  6, 209, 209, 101, -24, 189,  
45, 159, 177, -17, 141,216, -12, -4, 187, 
195, 184, 161, 11, 174, 61, 193, 46, 174,
 -29,84, 7, -15, 10, 90, 208, 138, 120,
 4, 6, 50, 134, 44, 172, -14};

void DeobfuscateString(char *enc) 
{
 int code = 0;
 int z = 0;
 int cDeobChar = 0;
 char tempnum[5]; //e.g. 0xAB
 int i = 0;
 char *tmpstr = szDeobfuscated;
 char a = 0;
 char b = 0; 
 int length = 0;
 
 if(NULL==enc)
  return;

 length = strlen(enc);

 if(length> sizeof(szDeobfuscated)-1)
  return;

    printf("Decoding %s of length %d\n", enc, length);


    for (i = 0; i < length; i++)
    {
        //check for ampersand '&'
        if (enc[i] != 38)
        {
            code = enc[i];
        }
        else
        {
            //if it's an ampersand
            i++; //skip over it
            //take the next two characters and make a hex value out of it e.g.
            //&ad would become 0xAD  
            memset(tempnum,0,5);
            a = enc[i++];
            b = enc[i++];
            sprintf_s(tempnum,5,"0x%c%c\0",a,b);
            sscanf_s(tempnum,"%x",&code);
   
        }

        cDeobChar = code - key[z];

        if (cDeobChar < 0)
        {
            cDeobChar = cDeobChar + 255;
        }

        *tmpstr++ = (char)cDeobChar;
        z++;
    }
    printf("\n\t%s\n",szDeobfuscated);
    return;
}

int main(void)
{
    memset(szDeobfuscated,0,4096);
    DeobfuscateString("&ad;Y&5b;&b3;&a3;&17;T&8b;&c4;&b9;#&96;&04;c&ea;&1d;$%&5d;&16;&08;B3&c0;");
    memset(szDeobfuscated,0,4096);
    DeobfuscateString("&97;50&91;u&ea;0∾&86;|4m&cb;2&a9;&e4;");
return 0;
}