Let's made a PC-base metal detector with usb interface !!!

[Aziz]

Software Protection Dongle

Hi all,

check this out:
http://www.microcosm.com/dinkey_pro.php

Indeed, this makes it a lot cheaper to protect an invention. The dongle needs an extra USB interface and it can even be held in the controller box.

I am pi$$ing on the patenting system. This is a very much cheaper solution.

Good luck in debugging the rocket science code...

Aziz

[Mustafa]

Hi,
All dongle implementations can be broken.
Full protection is impossible but the best way I know is you can store your rocket science routines in a copy protected micro or smartcard and communicate them using public-key cryptosystems. You should also take countermeasures to differential power analysis attacks.

[Aziz]

Hi,
All dongle implementations can be broken.
Full protection is impossible but the best way I know is you can store your rocket science routines in a copy protected micro or smartcard and communicate them using public-key cryptosystems. You should also take countermeasures to differential power analysis attacks.

Yes, it can be broken. But it will cost an huge investment and time to do this.

Aziz

[Mustafa]

Hi Aziz,
Believe me, cracking a dongle protected code doesn't require a huge investment or time.
I don't want to start an off-topic discussion here. I just wanted to inform you that dongles can slow down some hackers but does not protect your intellectual property.
On the other hand, most of the copy protected microcontrollers are still hackable but requires huge investment.

[Aziz]

Hi Aziz,
Believe me, cracking a dongle protected code doesn't require a huge investment or time.
I don't want to start an off-topic discussion here. I just wanted to inform you that dongles can slow down some hackers but does not protect your intellectual property.
On the other hand, most of the copy protected microcontrollers are still hackable but requires huge investment.

Bull$hit.

It's only a question of complexity. There are many many ways to blow up the complexity.

Here is a simple example:
Let's assume, a is part of an intermediate result. But I am adding further complexity to the code in this example.
((3.1414*a + b/3.1414)*3.1414 - b)/3.1414² = a

The reverse engineer is questioning the following operations. Hence, it is causing a lot of confusion. Now add more bull$hitting code. He even gets more confused. Add more conditional execution branches.

Let's consider, the reverse engineer has to debug a 100 MB of code. Well, we wish him good luck in doing this.

One can hide an intellectual property with high complexity software design. It is much cheaper than lodging a patent.

Don't try to debug my code. I have dozens of coding tricks to confuse you all.

Aziz

[Aziz]

((3.1414*a + b/3.1414)*3.1414 - b)/3.1414² = a

I hear someone complaining and putting an objection.

This part is a linear combination of bull$hit!
What a mess!

Aziz

[simonbaker]

I hear someone complaining and putting an objection.

This part is a linear combination of bull$hit!
What a mess!

Aziz

But if they just copy your code and use it without modification, how are you protected? Or is that not possible?

-SB

[WM6]

But if they just copy your code and use it without modification, how are you protected? Or is that not possible?

-SB

The best protection is faulty non-working code.

[Aziz]

But if they just copy your code and use it without modification, how are you protected? Or is that not possible?

-SB

This is a task for the dongle (you need a key to drive the car).

If you add more complexity to your dongle part code, then better.
The best and efficient way is confusing the reverse engineer (or hacker).

I can not give here tips how to do it of course.
Aziz

PS: The international copyright law protects it too. It's a free protection.

[simonbaker]

This is a task for the dongle (you need a key to drive the car).

If you add more complexity to your dongle part code, then better.
The best and efficient way is confusing the reverse engineer (or hacker).

I can not give here tips how to do it of course.
Aziz

PS: The international copyright law protects it too. It's a free protection.

I see - I was confused which code you were talking about.

-SB

[Aziz]

Iron Mineralization

Hi all,

I went to Chiemsee/Bavaria/Germany yesterday (BTW, a nice place). I know a place of high iron mineralization at the beach. Someone had an open fire at the beach last days. The place, where the ground was heated, all the mineralized rocks and sand turned to dark reddish (from ochre to dark red/brown color).

Now guess, what happens to the rust I have made last time if I am heating it (>600 °C)? It also gets dark red/brown.

It turned out to be a good idea to make naturally rusted iron oxide. I also made some more magnetite in the mean time. I am making highly mineralized hot rocks for the purpose of investigating the ground balancing.

Objective: Detecting in the ultra-highly mineralized ground. Making detecting possible, where other detectors fail.

Cheers,
Aziz

[Aziz]

Hi all,

did someone try to cascode mosfets to increase the breakdown voltage?

Found a very tricky way to energize the targets with huge power blast (>100 mJ).
This will stimulate the large deep targets a hell as the energizing time is large enough (> 40 µs).

Aziz

[AdrianM]

Hi all,

did someone try to cascode mosfets to increase the breakdown voltage?

Found a very tricky way to energize the targets with huge power blast (>100 mJ).
This will stimulate the large deep targets a hell as the energizing time is large enough (> 40 µs).

Aziz

I'm experimenting with cascoding right now. Maybe you should start a new topic on the subject and tell more about this huge power blast!

[Aziz]

Hi AdrianM,

I'm experimenting with cascoding right now. Maybe you should start a new topic on the subject and tell more about this huge power blast!

You know, there are hanging a lot of patent trolls. I don't want to feed them right now.

Aziz

[Dirk]

Maybe you will find parts and info if you are looking for HGÜ (HVDC)
Hochspannungs-Gleichstrom-Übertragung (high-voltage d.c. link)
and Wechselrichter. (inverter)
Parts I have seen at Reichelt are limited to 1200V (SGP07N120).What is the difference converter / inverter ???