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November 13th, 2008, 07:33 AM
#1
Securing Web Email pages by changing Pictures with letters
Hi friends !
I have seen some internet pages where you can send a request to a firm. If you want to do the request additional to your data, you need to type in some letters which are obviously painted into a picture so it cannot get readout by simple looking into the pages HTML source. text This gives security against auto spammers abuse of such pages IMHO.
The letters most arn't in one line, have sometimes different sizes and colors are maybe turned to some degree. Could be read by human, but not by automatic code. Great !
I want to use such a system for a page of my own, so where to get this web-control which paints such pictures. Or could this be easily created by C# code? Whats the name for such controls, so I can google for it ? 
Jonny Poet
To be Alive is depending on the willingsness to help others and also to permit others to help you. So lets be alive. !
Using Code Tags makes the difference: Code is easier to read, so its easier to help. Do it like this: [CODE] Put Your Code here [/code]
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November 13th, 2008, 07:41 AM
#2
 Re: Securing Web Email pages by changing Pictures with letters
 Originally Posted by JonnyPoet
Hi friends !
I have seen some internet pages where you can send a request to a firm. If you want to do the request additional to your data, you need to type in some letters which are obviously painted into a picture so it cannot get readout by simple looking into the pages HTML source. text This gives security against auto spammers abuse of such pages IMHO.
The letters most arn't in one line, have sometimes different sizes and colors are maybe turned to some degree. Could be read by human, but not by automatic code. Great !
I want to use such a system for a page of my own, so where to get this web-control which paints such pictures. Or could this be easily created by C# code? Whats the name for such controls, so I can google for it ?
This is called as "CAPTCHA" image.
-Completely Automated Public Turing test to tell Computers and Humans Apart.
Search net using "CAPTCHA" keyword.
Also look into the following:
http://www.captcha.net/
Regards,
MMH
Rate my post if you find it usefull.
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November 14th, 2008, 08:49 AM
#3
Re: Securing Web Email pages by changing Pictures with letters
Originally Posted by MMH
That was exactly what I wanted to know. Thx a lot
Jonny Poet
To be Alive is depending on the willingsness to help others and also to permit others to help you. So lets be alive. !
Using Code Tags makes the difference: Code is easier to read, so its easier to help. Do it like this: [CODE] Put Your Code here [/code]
If anyone felt he has got help, show it in rating the post.
Also dont forget to set a post which is fully answered to 'resolved'. For more details look to FAQ's about Forum Usage. BTW I'm using Framework 3.5 and you ?
My latest articles :
Creating a Dockable Panel-Controlmanager Using C#, Part 1 | Part 2 | Part 3 | Part 4 | Part 5 | Part 6 | Part 7
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November 14th, 2008, 12:50 PM
#4
Re: Securing Web Email pages by changing Pictures with letters
this question also was my question and the answer was very helpful to me also.
Please rate my post if it was helpful for you. Java, C#, C++, PHP, ASP.NET
SQL Server, MySQL
DirectX
MATH Touraj Ebrahimi
[toraj_e] [at] [yahoo] [dot] [com]
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November 14th, 2008, 02:37 PM
#5
Re: Securing Web Email pages by changing Pictures with letters
Originally Posted by toraj58
this question also was my question and the answer was very helpful to me also.
Now knowing what is exactly needed to do I'm just starting to create my own random asp.net solution using C# 
Jonny Poet
To be Alive is depending on the willingsness to help others and also to permit others to help you. So lets be alive. !
Using Code Tags makes the difference: Code is easier to read, so its easier to help. Do it like this: [CODE] Put Your Code here [/code]
If anyone felt he has got help, show it in rating the post.
Also dont forget to set a post which is fully answered to 'resolved'. For more details look to FAQ's about Forum Usage. BTW I'm using Framework 3.5 and you ?
My latest articles :
Creating a Dockable Panel-Controlmanager Using C#, Part 1 | Part 2 | Part 3 | Part 4 | Part 5 | Part 6 | Part 7
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