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 Dec 16 2003, 03:11 PM
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Active  Member Posts: 10 Joined: 16-December 03 Member No.: 220  |
I got to change a protected VI and don't have the password.
How can I get it?
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Dec 16 2003, 03:11 PM
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Dec 17 2003, 01:31 AM
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 Confucius say: Crowded elevator always smell different to midget  Admin  Posts: 2367 Joined: 13-October 02 From: Planet Earth Member No.: 2 Using LabVIEW Since:1994 LV:8.5 ,8.2.1 ,7.1.1 
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I think you're in trouble there. There are several people who have attempted to crack the passwords in VI's but have not succeeded. In any case, you may still have an option. National Instruments may be able to unlock the VI's for you. You have to prove that you are the owner of the code. If you are truly the owner of the code and you have your name or company name printed somewhere inside the diagram or fornt panel, then Ni will help you.
This information was given to me several years ago. I don't know if NI still performs this service. --------------------
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 Jan 3 2004, 07:01 AM
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Confucius say: Crowded elevator always smell different to midget Admin Posts: 2367 Joined: 13-October 02 From: Planet Earth Member No.: 2 Using LabVIEW Since:1994 LV:8.5 ,8.2.1 ,7.1.1
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QUOTE (Michael Aivaliotis @ Dec 16 2003, 08:31 PM) This information was given to me several years ago. I don't know if NI still performs this service. It turns out that NI doesn't perform this service anymore. For legal reasons they have stopped doing this. --------------------
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Jan 7 2004, 05:34 PM
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 Very Active Member Posts: 124 Joined: 17-January 03 From: Southern California Member No.: 37 Using LabVIEW Since:1988 LV:8.0.1 ,. ,.
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:ph34r: As one who has tried to hack the password protection. It's not easy and it's not a simple bit flip in the VI file. There are quite a few changes in the VI when password protection is on and off.
I am sure with enough time one can crack it. It is too bad that NI no longer does this. I know some clients who got stiffed with password protected VIs by employees and consultants. They are locked out of code they paid to have written.
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Apr 9 2004, 11:28 AM
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 <customize this text> Premium Member  Posts: 1012 Joined: 9-April 04 From: Rotterdam Member No.: 349 Using LabVIEW Since:1992 LV:8.5.1 ,8.2.1 ,7.1.1 
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And I'm positive that they actually use some cryptographic algorithme such as MD5 or similar to protect the password so trying to fake the password is a rather difficult if not useless approach.
The only way I could see is in patching the LabVIEW executable bij removing the password check altogether. But that is beyond my abilities.
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Apr 9 2004, 04:13 PM
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#6
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 Very Active Member Posts: 116 Joined: 9-June 03 From: Perth, Western Australia Member No.: 111 Using LabVIEW Since:2006 LV:6.0.2 ,. ,. 
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And *cough* potentially illegal ...
-------------------- "Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the universe trying to build bigger and better idiots. So far, the universe is winning." Robert Cringley.
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