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Password in Image Technology
Author: Hugo Ahlenius
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:32997#165613
You can do all these things using ImageMagick (I think). For more info
on images, google for "captcha"
--
Hugo Ahlenius
-------------------------------------------------------------
Hugo Ahlenius E-Mail: hugo.ahlenius@grida.no
Project Officer Phone: +46 8 230460
UNEP GRID-Arendal Fax: +46 8 230441
Stockholm Office Mobile: +46 733 467111
WWW: http://www.grida.no
-------------------------------------------------------------
| -----Original Message-----
|
| Sent: Saturday, June 05, 2004 10:38
| To: CF-Talk
| Subject: Re: Password in Image Technology
|
| I think the question is more a how-to, I have been reading
| the image functions in PHP for creatnig new images from PNG's
| or simply from scratch. That is how a lot of sites do it by
| adding an overlay and adding a filter to a set of
| characters... so you could do the following in PGP:
| Create image
| add text
| add overlay to confuse it
| add a distortion filter to confuse OCR systems
|
|
| I hope this helps (as you can run PGP and CF together on most
| systems!)
|
|
| Regards
|
| Mark Drew
|
| On Fri, 04 Jun 2004 15:02:48 -0400, Claude Schneegans
| <schneegans@internetique.com> wrote:
| >
| > >>the image is obscurred so OCR software can't read the
| "special code"
| >
| > Exact, and some use similar character, like I and 1, Z and
| 2, S and 5, etc. in order to goof the OCR systems even more.
| >
| > --
| > _______________________________________
| > REUSE CODE! Use custom tags;
| > See http://www.contentbox.com/claude/customtags/tagstore.cfm
| > (Please send any spam to this address: piegeacon@internetique.com)
| > Thanks.
| >
| >
|
|
Author: Mark Drew
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:32997#165588
I think the question is more a how-to, I have been reading the image
functions in PHP for creatnig new images from PNG's or simply from
scratch. That is how a lot of sites do it by adding an overlay and
adding a filter to a set of characters... so you could do the
following in PGP:
Create image
add text
add overlay to confuse it
add a distortion filter to confuse OCR systems
I hope this helps (as you can run PGP and CF together on most systems!)
Regards
Mark Drew
----- Excess quoted text cut - see Original Post for more -----
Author: Claude Schneegans
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:32997#165559
>>the image is obscurred so OCR software can't read the "special code"
Exact, and some use similar character, like I and 1, Z and 2, S and 5, etc. in
order to goof the OCR systems even more.
--
_______________________________________
REUSE CODE! Use custom tags;
See http://www.contentbox.com/claude/customtags/tagstore.cfm
(Please send any spam to this address: piegeacon@internetique.com)
Thanks.
Author: Bryan Stevenson
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:32997#165547
you gotter otter ;-)
pretty simple really...the image is obscurred so OCR software can't read the
"special code" and post the form automatically using what it read
Bryan Stevenson B.Comm.
VP & Director of E-Commerce Development
Electric Edge Systems Group Inc.
t. 250.920.8830
e. bryan@electricedgesystems.com
---------------------------------------------------------
Macromedia Associate Partner
www.macromedia.com
---------------------------------------------------------
Vancouver Island ColdFusion Users Group
Founder & Director
www.cfug-vancouverisland.com
Does anyone know anything about the technology that a lot
of people use including Network Solutions, that displays a
password in a fuzzy image and forces the user to type in
that password to proceed? I'm assuming it's primary
purpose is to stop automated hacking technology from
abusing forms.
Lee Surma
Author: Lee
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:32997#165546
Does anyone know anything about the technology that a lot
of people use including Network Solutions, that displays a
password in a fuzzy image and forces the user to type in
that password to proceed? I'm assuming it's primary
purpose is to stop automated hacking technology from
abusing forms.
Lee Surma
|
May 24, 2012
|
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