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[Message Deleted] [modified]

Scheduled Pinned Locked Moved Algorithms
algorithms
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  • P pmarfleet

    Your original post states 'the file will remain 100% unchanged'. If you're not changing the file, how can you be hiding data in it? What you're saying just doesn't make sense.

    Paul Marfleet "No, his mind is not for rent To any God or government" Tom Sawyer - Rush

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    Pallab_GT
    wrote on last edited by
    #6

    I said 100% unchanged as far ar reading the file is concerned.

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    • P Pallab_GT

      I said 100% unchanged as far ar reading the file is concerned.

      P Offline
      P Offline
      pmarfleet
      wrote on last edited by
      #7

      Pallab_GT wrote:

      I said 100% unchanged as far ar reading the file is concerned.

      How can you make this claim? In order to hide the data, you are going to have to modify some characters in the file. If I use a diff tool to compare the old and new versions of the file, it's going to flag up some differences. If you make changes to a file, they're going to be noticed.

      Paul Marfleet "No, his mind is not for rent To any God or government" Tom Sawyer - Rush

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      • P pmarfleet

        Pallab_GT wrote:

        I said 100% unchanged as far ar reading the file is concerned.

        How can you make this claim? In order to hide the data, you are going to have to modify some characters in the file. If I use a diff tool to compare the old and new versions of the file, it's going to flag up some differences. If you make changes to a file, they're going to be noticed.

        Paul Marfleet "No, his mind is not for rent To any God or government" Tom Sawyer - Rush

        C Offline
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        CPallini
        wrote on last edited by
        #8

        pmarfleet wrote:

        How can you make this claim? In order to hide the data, you are going to have to modify some characters in the file. If I use a diff tool to compare the old and new versions of the file, it's going to flag up some differences. If you make changes to a file, they're going to be noticed.

        You're wrong. You wrote all the above because you're not aware of occultism superanatural powers. :-D

        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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        • P Pallab_GT

          Hi guys...I am from Bangladesh and my knowledge is very limited.I have developed an algorithm using which any data can be hidden in a text file.After hiding the data in the text file,the size of the text file remains absolutely unchanged and there is no change whatsoever in the file's content as far as reading the file is concerned.I know there r lots of data hiding techniques.Guys can you plse tell me if this techniq has already been implemented the way i have done it...I mean hiding the data in a text file without changing the file size even by a single byte and you wont see a single replacement/change/distortion in any of the letters of the file.As far as reading the file is concerned...the file will remain 100% unchanged even after hiding the data in it.

          modified on Tuesday, March 18, 2008 8:42 PM

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          mabo42
          wrote on last edited by
          #9

          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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          • M mabo42

            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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            Luc Pattyn
            wrote on last edited by
            #10

            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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            • L Luc Pattyn

              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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              mabo42
              wrote on last edited by
              #11

              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. :zzz: Matthias

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              • M mabo42

                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. :zzz: Matthias

                L Offline
                L Offline
                Luc Pattyn
                wrote on last edited by
                #12

                then create a font that holds the ASCII char set twice, and make it the default font. :)

                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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                • L Luc Pattyn

                  then create a font that holds the ASCII char set twice, and make it the default font. :)

                  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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                  mabo42
                  wrote on last edited by
                  #13

                  ... and any more tricks, but this will hide the data only on his own box ... [edit](and only for him)[/edit] :-D Matthias

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                  • C CPallini

                    pmarfleet wrote:

                    How can you make this claim? In order to hide the data, you are going to have to modify some characters in the file. If I use a diff tool to compare the old and new versions of the file, it's going to flag up some differences. If you make changes to a file, they're going to be noticed.

                    You're wrong. You wrote all the above because you're not aware of occultism superanatural powers. :-D

                    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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                    P Offline
                    Pallab_GT
                    wrote on last edited by
                    #14

                    You read it wrong.I said AS FAR AS READING THE FILE IS CONCERNED,the file remains 100% unmodified.Ofcourse i have to make some modification but that does not affect the size of the file or for that matter the readability of the file even by a bit.

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                    • P Pallab_GT

                      You read it wrong.I said AS FAR AS READING THE FILE IS CONCERNED,the file remains 100% unmodified.Ofcourse i have to make some modification but that does not affect the size of the file or for that matter the readability of the file even by a bit.

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                      CPallini
                      wrote on last edited by
                      #15

                      Do you know a text file contains just character codes?

                      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

                      P 1 Reply Last reply
                      0
                      • P Pallab_GT

                        Hi guys...I am from Bangladesh and my knowledge is very limited.I have developed an algorithm using which any data can be hidden in a text file.After hiding the data in the text file,the size of the text file remains absolutely unchanged and there is no change whatsoever in the file's content as far as reading the file is concerned.I know there r lots of data hiding techniques.Guys can you plse tell me if this techniq has already been implemented the way i have done it...I mean hiding the data in a text file without changing the file size even by a single byte and you wont see a single replacement/change/distortion in any of the letters of the file.As far as reading the file is concerned...the file will remain 100% unchanged even after hiding the data in it.

                        modified on Tuesday, March 18, 2008 8:42 PM

                        L Offline
                        L Offline
                        Lost User
                        wrote on last edited by
                        #16

                        Are you using NTFS Alternate Data Streams? http://support.microsoft.com/kb/105763[^]

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                        • C CPallini

                          Do you know a text file contains just character codes?

                          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

                          P Offline
                          P Offline
                          Pallab_GT
                          wrote on last edited by
                          #17

                          I know that a text file contains only character codes.And knowing that i am claiming that i can hide data in the text file without replacing/changing/distorting any of the readable letters.

                          P 1 Reply Last reply
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                          • L Lost User

                            Are you using NTFS Alternate Data Streams? http://support.microsoft.com/kb/105763[^]

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                            Pallab_GT
                            wrote on last edited by
                            #18

                            No i am not using NTFS alternate file streams.

                            1 Reply Last reply
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                            • L Lost User

                              Are you using NTFS Alternate Data Streams? http://support.microsoft.com/kb/105763[^]

                              P Offline
                              P Offline
                              Pallab_GT
                              wrote on last edited by
                              #19

                              Text file contains only character codes.What if i can hide data inside the text file without distorting/changing/replacing a single readable character.

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                              • L Luc Pattyn

                                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.


                                P Offline
                                P Offline
                                Pallab_GT
                                wrote on last edited by
                                #20

                                No...I am not assuming ASCII codes to be 7 bit.

                                1 Reply Last reply
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                                • M mabo42

                                  If you have done it with techniques like Alternate Data Stream[^] , then it's not really data hiding. Please describe your idea. Matthias

                                  P Offline
                                  P Offline
                                  Pallab_GT
                                  wrote on last edited by
                                  #21

                                  No Sir,I have not used the alternate data stream technique.

                                  1 Reply Last reply
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                                  • P Pallab_GT

                                    I know that a text file contains only character codes.And knowing that i am claiming that i can hide data in the text file without replacing/changing/distorting any of the readable letters.

                                    P Offline
                                    P Offline
                                    pmarfleet
                                    wrote on last edited by
                                    #22

                                    Pallab_GT wrote:

                                    i am claiming that i can hide data in the text file without replacing/changing/distorting any of the readable letters

                                    Then your claim is obviously false. Common sense dictates that data cannot be hidden in a file without requiring the file to be modified. If the file is modified, a diff tool will pick up the changes. If you still believe your claim is true, you are more deluded than I first thought. If you want to perform miracles, maybe you should consider changing careers and become a magician instead of a software developer.

                                    Paul Marfleet "No, his mind is not for rent To any God or government" Tom Sawyer - Rush

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                                    • P pmarfleet

                                      Pallab_GT wrote:

                                      i am claiming that i can hide data in the text file without replacing/changing/distorting any of the readable letters

                                      Then your claim is obviously false. Common sense dictates that data cannot be hidden in a file without requiring the file to be modified. If the file is modified, a diff tool will pick up the changes. If you still believe your claim is true, you are more deluded than I first thought. If you want to perform miracles, maybe you should consider changing careers and become a magician instead of a software developer.

                                      Paul Marfleet "No, his mind is not for rent To any God or government" Tom Sawyer - Rush

                                      P Offline
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                                      Pallab_GT
                                      wrote on last edited by
                                      #23

                                      You are missing one point again and again...i am insisting upon the fact that i am not going to change/replace/distort any of the READBLE CHARACTERS. Before u pass comment u should know that it is not necessary that you will know each and every trick of software development.There might be things beyond ur knowing.One more thing...No body in this world knows everything.

                                      P C 2 Replies Last reply
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                                      • P Pallab_GT

                                        You are missing one point again and again...i am insisting upon the fact that i am not going to change/replace/distort any of the READBLE CHARACTERS. Before u pass comment u should know that it is not necessary that you will know each and every trick of software development.There might be things beyond ur knowing.One more thing...No body in this world knows everything.

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                                        pmarfleet
                                        wrote on last edited by
                                        #24

                                        Pallab_GT wrote:

                                        i am not going to change/replace/distort any of the READBLE CHARACTERS

                                        All characters in a text file are readable. That's the whole point; data is stored in text files so it can be read by humans as well as computers. Have a look at the ASCII table[^]. Notice anything? That's right, all the characters are human-readable. Now ask yourself this: if all ASCII characters are readable, what changes can your algorithm make that won't be easily noticed?

                                        Paul Marfleet "No, his mind is not for rent To any God or government" Tom Sawyer - Rush

                                        P 1 Reply Last reply
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                                        • P Pallab_GT

                                          You are missing one point again and again...i am insisting upon the fact that i am not going to change/replace/distort any of the READBLE CHARACTERS. Before u pass comment u should know that it is not necessary that you will know each and every trick of software development.There might be things beyond ur knowing.One more thing...No body in this world knows everything.

                                          C Offline
                                          C Offline
                                          CPallini
                                          wrote on last edited by
                                          #25

                                          And what are the UNREADABLE CHARACTERS of a text file? I have to admit I know only a few tricks of software development :sigh: , but I'm striving to learn :rolleyes:

                                          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

                                          P L 2 Replies Last reply
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