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Help on 'lineread' a encrypt SKILL ~!!

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sunkey

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Jun 10, 2005, 6:29:53 AM6/10/05
to

I'v got a encrypt SKILL , of cos, i had the
password . I can load it , but i cant use the
'lineread' to read it ... it alwasy report me
that the 'password' is necessay....

but...where should i put the pw in ?

need ur help !!

Guenther Sohler

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Jun 10, 2005, 10:28:26 AM6/10/05
to

Do you need it to encrypt unreadable skill files ?
What content does the ile file have ?


sunkey

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Jun 10, 2005, 10:26:06 PM6/10/05
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i want to de-encrypt a encrypt skill files ,
which i know the password. As u know, we can
read it by 'lineread' , but if there's passwd,
even if i know it , cant read it.

Kholdoun TORKI

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Jun 11, 2005, 1:43:25 AM6/11/05
to
Encryption with a password prevents the unencryption
by lineread.
There is no way to decrypt actually with a standard
Cadence license.

===================
Kholdoun TORKI
http://cmp.imag.fr
===================

Guenther Sohler

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Jun 11, 2005, 5:21:37 AM6/11/05
to
But there is at least one exception.

If the encrypted skill files describes a pcell,
load it to build the pcell and use
dbWriteSkill to dump the plain unencryped content :)

sunkey

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Jun 11, 2005, 7:30:11 AM6/11/05
to

oops... got it~~ thx a lot~~ :)

anyway, i just wanna to know if there's any
'option' of the 'lineread' function as if i
'v got the passwd already~~

thx ~

sunkey

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Jun 11, 2005, 7:33:14 AM6/11/05
to

could u pls give me a detail example ?

Guenther Sohler

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Jun 11, 2005, 10:44:42 AM6/11/05
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On Sat, 11 Jun 2005 07:33:14 -0400, sunkey wrote:

>
> could u pls give me a detail example ?

does your skill code contain pcell generation code ?
if yes- i'd prefer to contact you via email :)


S. Badel

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Jun 12, 2005, 6:34:08 AM6/12/05
to
You can't, that would be too easy.

One way or the other, your foundry or whoever has to provide you with
the password- that doesn't mean they want to give you access to the
source code.

That's the whole point password-encrypting your skill files.

Get in touch with the owner if you really need the source.

stéphane

sunkey

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Jun 12, 2005, 10:44:14 PM6/12/05
to

thx~~ acturally, i'v the source code, i just
wander if it's possible to read it out after
a pw was set, and by the way, the pw is public.

:)

Andrew Beckett

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Jun 13, 2005, 1:05:57 AM6/13/05
to

No, it isn't. Even if you know the password, you can't use the known tricks to
read the password file. As for Guenther's exception - it would be fairly
unusual to provide encrypted SKILL for defining the pcell, since there is no
need to ship the code for defining a pcell (since it is stored within the
cellView), unless that code is for additional functions called within the
pcell - in which case Guenther's trick won't work...

Regards,

Andrew.

fogh

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Jun 17, 2005, 4:23:49 PM6/17/05
to
Kholdoun,

that is a hard statement... There are always more ways to Rome than we
can imagine :)

Kholdoun TORKI

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Jun 18, 2005, 11:38:00 AM6/18/05
to
Hi Fogh,

My corrected statement :
"There are no (standard, legal, documented, supported) public
methods to decrypt a password encrypted Skill code, using a
standard Cadence licence."

Cheers,

===================
Kholdoun TORKI
http://cmp.imag.fr
===================

Jim Cantellini

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Jun 27, 2005, 1:33:39 AM6/27/05
to
sunkey wrote:
> I'v got a encrypt SKILL , of cos, i had the
> password . I can load it , but i cant use the
> 'lineread' to read it ... it alwasy report me
> that the 'password' is necessay....

Ask the true owner for the password.
Oh, you have the password, you say.

Ask the true owner for the source code.
Oh, you have the source code, you say.

Why am I confused about the question & the true source of the file?

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