int gslame( int num ) 
{
    int c = (num >> 16) & 0xffff;
    int a = num & 0xffff;

    c *= 0x41a7;
    a *= 0x41a7;
    a += ( (c & 0x7fff) << 16 );

    if( a < 0 ) 
    {
        a &= 0x7fffffff;
        a++;
    }

    a += (c >> 15);

    if( a < 0 ) 
    {
        a &= 0x7fffffff;
        a++;
    }

    return a;
}

int gspassenc( char* pass ) 
{
    int passlen = strlen(pass);
    int num = 0x79707367;   // "gspy"

    if( !num )
        num = 1;
    else
        num &= 0x7fffffff;

    int a, c, d;
    for( int i = 0; i < passlen; i++ ) 
    {
        d = 0xff;
        c = 0;
        d -= c;

        if( d ) 
        {
            num = gslame( num );
            a = num % d;
            a += c;
        }
        else
            a = c;

        pass[i] ^= a;
    }

    return passlen;
}