void decrypt(char * data, int filesize, char * dst) {

    char * key = "Z#jM0NeVv#wMDG9+8rwzxVsti80A=j5a.op";

    if (dst == 0)

    {

        dst = new char[filesize + 1024];

        memset(dst, 0, filesize + 1024);

    }

    int i = 0, j = 0;

    for (; i < filesize; i++, j++)

    {

        int k = j % 0x23;

        dst[i] = data[i] ^ key[k];

    }

}