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HellBound Hackers | Computer General | Increasing Security

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RE: CAPTCHA Questions


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Posted on 07-09-08 04:20
slpctrl wrote:
I'm posting video proof that his scripts time out to an almost useless state.


After the fact... after the whole argument.


And I hope that you, a 26 year old programmer are enjoying the hell out of burning people online. LOLZ. That's so fucking pathetic/wrong on so many levels, especially given your contributions here.


Oh, now I have contributions? About 20 posts ago, you said I didn't. Nice contradiction.


And by the way, I have proven my original argument...after the 1st code which did nothing more than return the characters (I missed your cached png file that produced the image from captcha.php), I said it had to work 100% of the time. Your optimized code doesn't come close.


The argument was about the second code. You didn't state, at the time, that the second code submission didn't work. Read back; my arguments have stayed consistent and to the point while yours... have changed to fulfill your goal.

Argue about the original topic, not about your perception of me. Otherwise, your arguments are not valid. Enjoy.


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RE: CAPTCHA Questions


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Posted on 07-09-08 04:21
Zephyr_Pure wrote:
slpctrl wrote:
I'm posting video proof that his scripts time out to an almost useless state.


After the fact... after the whole argument.


And I hope that you, a 26 year old programmer are enjoying the hell out of burning people online. LOLZ. That's so fucking pathetic/wrong on so many levels, especially given your contributions here.


Oh, now I have contributions? About 20 posts ago, you said I didn't. Nice contradiction.


And by the way, I have proven my original argument...after the 1st code which did nothing more than return the characters (I missed your cached png file that produced the image from captcha.php), I said it had to work 100% of the time. Your optimized code doesn't come close.


The argument was about the second code. You didn't state, at the time, that the second code submission didn't work. Read back; my arguments have stayed consistent and to the point while yours... have changed to fulfill your goal.

Argue about the original topic, not about your perception of me. Otherwise, your arguments are not valid. Enjoy.


That's what I've been meaning THIS ENTIRE TIME

LOL. I HAVEN'T BEEN ONCE REFERRING TO HIS 1ST CODE. LOL. MY apologies for the misunderstanding. Chinchilla, I'll still pay you because I learned from the code, although I'm displeased that you rushed through it and didn't create the quality I know you probably could have.



LOL.

And no, I've pretty much been arguing, that at least using his script remotely on mine and not locally, it works pretty much less than 50% of the time. And where have I seen that 'Argue about the original topic, not about your perception of me. Otherwise, your arguments are not valid. Enjoy.' before....can't quite put my finger on it though I know I've seen it before.




Edited by on 07-09-08 04:23
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RE: CAPTCHA Questions


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Posted on 07-09-08 04:32
slpctrl wrote:
That's what I've been meaning THIS ENTIRE TIME

LOL. I HAVEN'T BEEN ONCE REFERRING TO HIS 1ST CODE.


Numerous times in the thread you did. I'm not going to bother quoting them anymore. However...

MY apologies for the misunderstanding.


I accept, partially. I'm still pissed that you would disrespect me the way you did. However, the fact that this whole argument is taking a turn for the better is an improvement.


And where have I seen that 'Argue about the original topic, not about your perception of me. Otherwise, your arguments are not valid. Enjoy.' before....can't quite put my finger on it though I know I've seen it before.


Probably in another argument where you argued with personal attacks instead of logical retorts.


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Posted on 07-09-08 04:35
slpctrl wrote:
I only made 2 attempts, wanted to do a 3rd. But anyways, I'll pay you...it's not a big deal. I'm having more fun with zephyr_pure, a grown man that is getting so pissed off over the internet hahahaha. What a pathetic piece of shit!

also, now that you're here, you ran the captcha in the video locally didn't you? That's okay for recording purposes, but I simply said way long time ago that it had to connect to the one on freehostia.


Yep, I ran it locally.. if you actually think that's what makes a significant difference then you're more ignorant than yours3lf or Coder Disaster (I thought I would use a comparison you can relate to). Sending a request over the net compared to requesting it locally is trivial .. it at best would make a couple second difference in the TOTAL execution time (that's a generous estimation in your favour).

Also, I know I'm biased in this argument .. but I agree with Zeyphyr.. I fulfilled the requirements you specified.. you didn't even show the supposed incorrect results in your video.. and ALL the fatal errors you showed (I believe you implied that there were many) was only a timeout.. you didn't even specify which language we had to use to solve the captcha.. if I had done this in C this way it wouldn't be an issue cause there would be no default setting that would cause it to timeout. I said it could take over 30 seconds to solve. That's why I assumed the time-limit wouldn't be an issue.

Zephyr's age doesn't matter... if you value knowledge as much as you claimed earlier (when you said you were happy to learn) then you should only focus on his arguments and directly reply instead of repeating about how you shouldn't have to pay - but you do cause you're a nice guy - because the code took over 30 seconds to execute.

And to be fair, I am younger than you... and if you want me to help you with OCR then I'll still help.

edit: smileys

Edited by on 07-09-08 04:36
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Posted on 07-09-08 05:12
The argument's over; a truce was agreed. Let the Captcha experiments continue. Smile


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Posted on 07-09-08 13:03
Just thought I'd point out that he could make it not time out by doing:

Code
ini_set('max_execution_time','360');




Put that right at the top and wow, no time out!
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Posted on 07-09-08 15:24
or Coder Disaster (I thought I would use a comparison you can relate to)


Dont bring me into it, i defended you.





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RE: CAPTCHA Questions

spyware
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Posted on 07-09-08 15:38
Coder Disaster wrote:
Dont bring me into it, i defended you.


I re-he-heaaaally doubt that you could defend Zephyr. Well, perhaps as a human shield, but in a conversation? Oh no, you weren't defending anything, you were actually a disturbance in this conversation. A red ant among human beings, an annoying instance of a bug.

Squish, bug, squish.



img507.imageshack.us/img507/3580/spynewsig3il1.png
"The chowner of property." - Zeph
[small]
Widespread intellectual and moral docility may be convenient for leaders in the short term,
but it is suicidal for nations in the long term.
- Carl Sagan
“Since the grid is inescapable, what were the earlier lasers about? Does the corridor have a sense of humor?” - Ebert
[/s
http://bitsofspy.net
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Posted on 07-09-08 15:39
Read what i wrote, where does it say i am talking about z_pure, i was talking about chinchilla


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Posted on 07-09-08 15:49
Coder Disaster wrote:
Read what i wrote, where does it say i am talking about z_pure, i was talking about chinchilla


Oh sorry. That's because you fail at quoting. Whatever, replace Zephyr's name from my post with Chinchilla3k's, done.

So, to sum it up. You can't quote, still can't defend shit AND, stop talking. Please. Lets leave this subject alone. It's over, done, like privacy.



img507.imageshack.us/img507/3580/spynewsig3il1.png
"The chowner of property." - Zeph
[small]
Widespread intellectual and moral docility may be convenient for leaders in the short term,
but it is suicidal for nations in the long term.
- Carl Sagan
“Since the grid is inescapable, what were the earlier lasers about? Does the corridor have a sense of humor?” - Ebert
[/s
http://bitsofspy.net
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RE: CAPTCHA Questions


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Posted on 08-09-08 07:02
I made one that breaks slpctrl's latest one (the one with a bunch of red random alpha text).. this one runs in roughly <1 - 2 seconds.

http://pastebin.ca/1196978

I uploaded it on freehostia

http://eetcake.freehostia.com/filter.php

his captcha is here

http://eetcake.freehostia.com/captcha.php

and the image is temporarily stored in

http://eetcake.freehostia.com/tmp.png

So if you run filter.php.. you should see the server time before the script execs.. the text in the image.. and the server time after the script execs.. and the image should be stored as tmp.png

If you read the src code and wonder where data.txt is.. it's here

http://eetcake.freehostia.com/data.txt
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RE: CAPTCHA Questions

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Posted on 08-09-08 13:16
Thank you all for turning this into a "crack my code for money! ohh shit it got cracked *cry*." Thread.

I wanted constructive words on how to improve mine, not try this one which has very inefficient code because it cannot (ohh shit it did) get cracked!

Please let me know where I can improve on mine and what you personally think could make it better. If you have snippets please let me know.

I am currently working on character location displacement as well as character color randomization PER character. This has taken a total of about 1 hour of off and on coding to get to where it is right now so please let me know where it can be improved upon.
http://ipicstorag. . .a/form.php to test it out.

Thank you and lets get this back on track PLEASE!


Just ask Yahoo!Taboo! http://www.erikwestlake.com
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Posted on 08-09-08 15:18
AldarHawk wrote:
Advice pls


Use a randomized wave function on the letters.. preferably one where the "straight boundaries" overlap.. i.e. although the letters won't overlap.. if you were to enclose a letter in a rectangle.. another letter would intersect that rectangle. Well.. you could always allow the letters to overlap.. but it wouldn't be as aesthetically pleasing.

Wavy letters are probably one of the more computationally expensive things to recognize.

What you have right now isn't that much further of a leap than slpctrl's latest one.. It would require a bit more effort and a bit more computational power but when a bot filters out the background and handles the rotation.. the only other thing it has to account for is the limited number of shapes the letters can take on.

Edit: misspelled wavy.

Edited by on 08-09-08 17:37
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RE: CAPTCHA Questions

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Posted on 08-09-08 17:23
Thanks for the constructive criticism. Any idea the function(s) needed to accommodate this?

If not I will delve.


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Posted on 08-09-08 18:05
AldarHawk wrote:
How to do waviness?


http://ca.php.net/manual/en/function.imagick-waveimage.php

Or if you want to use your own implementation then you could always perform varying shear transformations on each (x,y) coordinate of the letter.

What I would probably do is take each letter in your captcha, set each of them at slightly varying angles (important), apply the wave function to each - using varying amplitudes and lengths(also important).. and then piece it all together in the final image. I wouldn't do any other distortion (i.e. the background would be white)

I'm not sure on how I would break this.. I have several ideas but I'm not sure of the practicality of them.
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RE: CAPTCHA Questions

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Posted on 08-09-08 18:25
http://ipicstorag. . .a/form.php

No wave implemented yet but, what do you all think....do 10 and post your score Grin


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Posted on 08-09-08 19:21
AldarHawk wrote:
http://ipicstorag. . .a/form.php

No wave implemented yet but, what do you all think....do 10 and post your score Grin


I don't like some of the fonts.. they're hard to read. Smaller fonts won't work too well with wave functions.. so I would use larger fonts... or you could resize the smaller ones. I would put each letter closer together.. and reduce the angle of rotation.. for some images I'm not sure if I'm looking at a tilted 'm' or a tilted '3'. The text should be larger.. just because it's hard for a human to read doesn't mean it's hard for a computer to read. Conversely, just because it's really easy for a human to read doesn't mean it's really easy for a computer to read.

Google has a really good captcha.

https://www.google.com/accounts/DisplayUnlockCaptcha

Use really simple, readable, large fonts.

Hmm.. google seems to create random strings that are phonetically friendly.. (that can be pronounced).. they probably have a list of consonant/vowel combinations to build the string... this probably makes it easier to read.

Edited by on 08-09-08 20:22
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RE: CAPTCHA Questions

AldarHawk
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Posted on 09-09-08 12:26
Thank you for the honest, constructive answer man. Anyone else? I will work on a waved one soon.


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RE: CAPTCHA Questions

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Posted on 09-09-08 12:30
why not just make one that is upside down? as far as i know programs are not made to read them upside down..that would be easily read and if its like 5 chars it shouldn't be to hectic for users.


Debugging is what programmers do to beta software to make it take up more room on your hard drive if it is running too efficiently.


img259.imageshack.us/img259/3713/sigr.png

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RE: CAPTCHA Questions

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Posted on 09-09-08 12:46
Yes, bots that a coded now are not...but how simple would it be to say, "read letter upside down"? It is a simple filter.


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