🚀 go-pugleaf

wow...

it appears TEA is buggy as hell

Nice going dudes :)

 // modified

 // step 1

 z = (y << 4 ^ y >> 5);

 printf(" z = (y << 4 ^ y >> 5); %lu \n", z );

 z = ( (y << 4) ^ (y >> 5) );

 printf(" z = ( (y << 4) ^ (y >> 5) ); %lu \n", z );


 // step 2

 z = (y << 4 ^ y >> 5) + y ^ _sum;

 printf(" z = (y << 4 ^ y >> 5) + y ^ _sum; %lu \n", z ); // ***

 z = ( (y << 4) ^ (y >> 5) );

 printf(" z = ( (y << 4) ^ (y >> 5) ) + (y ^ _sum); %lu \n", z ); //
different result *** !!!



<disastry@saiknes.lv.NO.SPaM.NET> wrote in message
news:3D69F6F6.E43591E6@saiknes.lv.NO.SPaM.NET...
> -----BEGIN PGP SIGNED MESSAGE-----
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>
> skybuck wrote:
> > The problems are probably with these lines of code:
> >
> > c version:
> >
> > y += (z<<4)+a ^ z+sum ^ (z>>5)+b;
> > z += (y<<4)+c ^ y+sum ^ (y>>5)+d;
> >
> > pascal version:
> >
> > y := y + (z shl 4) + a xor z + _sum xor (z shr 5) + b;
> > z := z + (y shl 4) + c xor y + _sum xor (y shr 5) + d;
>
> 1) try:
>   y := y + ((z shl 4) + a xor z + _sum xor (z shr 5) + b);
> or even
>   y := y + (((z shl 4) + a) xor (z + _sum) xor ((z shr 5) + b));
>
> 2) better use XTEA (aka (TEAN)
>
> __
> Disastry  http://disastry.dhs.org/
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