string XOR_Encryption(string toBeEncrypted, string sKey)
{
    string sEncrypted(toBeEncrypted);
    unsigned int iKey=sKey.length();
    int iIn=toBeEncrypted.length();
    int x=0;
    for(int i = 0; i < iIn; i++)
    {
        sEncrypted[i] = toBeEncrypted[i] ^ sKey[x];
        if(++x == iKey){ x = 0; }
    }
    return sEncrypted;
}