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I can't see who you are asking, but if you are asking me what my point was, I would summarise this thread as being about a simple data obscuration technique that may be useful for your purpose. As it is easily detected it doesn't appear to be of any great general interest.
You ask in your first post:
Pallab_GT wrote: Guys can you plse tell me if this techniq has already been implemented the way i have done it
The answer to this is that it has almost certainly been done somewhere by someone, but really - who cares? Is it a commonly known/used technique - no.
I suspect that you are asking this question thinking that you have invented something (possibly of value). Whilst I encourage you to continue to try to develop new and interesting ideas, this one is no world beater. Unless you have the killer application in mind, use it to impress your friends by hiding data in text files and move on.
Peter
"Until the invention of the computer, the machine gun was the device that enabled humans to make the most mistakes in the smallest amount of time."
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And what are the UNREADABLE CHARACTERS of a text file?
I have to admit I know only a few tricks of software development  , but I'm striving to learn 
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
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Sir,my knowledge of software development is very limited and you know a lot more than me.
I will definitely share my idea...tell me...will it be something new if i can do what i claim?
Aspects of my idea-
1.All readable/printable letters of the text file remains absolutely unchanged
2.The size of the file does not change even by a single byte after hiding the data.
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all the bytes between the logical end-of-file and the physical end-of-file
is unreadable to the normal application associated with the file type.
It can range up to an entire disk cluster (that is several sectors) without
being noticed.
Luc Pattyn [Forum Guidelines] [My Articles]
This month's tips:
- before you ask a question here, search CodeProject, then Google;
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get;
- use PRE tags to preserve formatting when showing multi-line code snippets.
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OK, now put your text file on a floppy or perhaps transfer file content on a network.
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
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Tell me will it be something new if i can prove what i am claiming?
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Pallab_GT wrote: Tell me will it be something new if i can prove what i am claiming?
Do you need my approval?
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
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Sir,My knowledge is very limited in compared to you.So i want to know if i can do what i am claiming...will it be something new?
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Why don't you just tell that this would be indeed a first application and algorithm that would be capable of data hiding in the way he claims it to do?
codito ergo sum
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Well Sir,if you comapare the text files(prior and post hiding data versions) bit by bit...there will be obviously some chages.But that change will have no impact whatsoever in any of the readable/printable letters of the file.Not even a single readable/printable letter will be changed/replaced or distorted.Plse note my emphasise on readable/printable letters.There will be some changes in the file in binary level.But,i say again that change in binary level will have no impact whatsoever in the readable/printable letters of the text file,the readable/printable letters will remain absolutely the same as they were before hiding the data.And the size of the file will also remain absolutely unchanged.The size will not change even by a single byte.
Considering the above...do u still think its impossible?
Sir,does it really matter if somebody tells me something because of my persistance?The question is if i can honour what i am saying?
I know very little about software development and i sincerely consider you people far more learned than me.That why i am just asking u people if this techniq has already been implemented the way i am claiming it.
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No, the technique the way you are claiming it, doesn't yet exist, because until now people didn't think is was possible.
So you would be the first to create this algorithm.
codito ergo sum
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I think we're beating a dead horse.
The purpose of this thread is becoming a useless increasing of the poor Mathematics and Algorithms forum.
I don't bother if your technique is new or old. I'm just wondering if your algo is able to accomplish the task (the way you claimed) or not.
Now, IMHO there are the following alternatives:
(1) You want to keep your algo secret.And you don't want to give any
evidence of its results.
(2) You want to keep your algo secret, But you want to give some evidence
of the results.
(3) You don't want to keep it secret.
Under (1) hypothesys, we should stop to beat the horse.
Under (2) one, you can provide us a text file with hidden info inside and the original file (without the hidden info inside).
Under (3) hypothesys, you may tell us about you prodigious algo or even write an article on the argument.
BTW I can't give you a prize for the innovative idea, It is not my role.
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
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Well Sir,I will take the second option.But You wont be able to notice any difference whatsoever between the files using any text editor(I have used MS-WORD,WORDPAD,NOTEPAD).
My point is...the softwares that are avaiable to hide data in a carrier file...they change the file size,and the changes are visible using any simple text editor.But in my technic...u wont notice any change whatsoever using any text editor.
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OK. Now, where are the two files?
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
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You have beared with me so long...plse bear with me a little more and give me a day plse.
Sir onemore thing...if u cant notice any change in any of the readable/printable change using MS-WORD/WORDPAD/NOTEPAD using UTF-8 encoding,do u think the change can be noticed using other editor.If so can u plse refer me some text editor and where can i download them?If i am wrong i will sincerely beg ur apology to waste ur valuable time.
Sir,I am a novice in compared to you n software development.I am just knocking ur door just to be sure if i am right.I dont have any other intention whatsoever.
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Pallab_GT wrote: You have beared with me so long...plse bear with me a little more and give me a day plse.
Take you time. I'll be waiting for.
Pallab_GT wrote: Sir onemore thing...if u cant notice any change in any of the readable/printable change using MS-WORD/WORDPAD/NOTEPAD using UTF-8 encoding,do u think the change can be noticed using other editor.If so can u plse refer me some text editor and where can i download them?If i am wrong i will sincerely beg ur apology to waste ur valuable time.
Sir,I am a novice in compared to you n software development.I am just knocking ur door just to be sure if i am right.I dont have any other intention whatsoever.
Don't worry, you will receive all my comments and suggestions.
Good luck and have a nice day.
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
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Thanks for bearing with me.You too have a nice day.
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One thing you're ignoring that the space character IS a READABLE/PRINTABLE character. Just replacing the space with some other non-printable character is not going to work. At least, not within the parameters you've specified.
Seriously, with the spec's that you've laid out, what you want to do just isn't possible. There is simply not enough bits available to play with to make the technique usable for anything other than very short messages. This is why you just don't see the technique being used.
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So, do you think he needs my approval?
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
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No Sir...i am not using that approach.I am usin a very simple but effective approach.And using this approach...i am being able to hide the data in a text file without any change/replacement/distortion whatsoever in the readable/printable letters of the file and without changing the file size.
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While you're listing a set of viable options (though in lost battle, IMHO), our friend keep talking about his occultism superpowers http://www.codeproject.com/script/Forums/View.aspx?fid=326859&msg=2474129[^].
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
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If you have done it with techniques like Alternate Data Stream[^] , then it's not really data hiding. Please describe your idea.
Matthias
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possible hint: ASCII is a 7-bit code.
Luc Pattyn [Forum Guidelines] [My Articles]
This month's tips:
- before you ask a question here, search CodeProject, then Google;
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get;
- use PRE tags to preserve formatting when showing multi-line code snippets.
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Luc Pattyn wrote: ASCII is a 7-bit code
Hmm, I know, but I don't know any Text-Editor that would not reflect the MSB-Bit set to 1. 
Matthias
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