help about creating the key disks

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  1. #1
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    Question help about creating the key disks

    hello
    i am new to programming please help to create a key disk of any software under c
    the key stored in the disk should be hidden in every sense. if the disk is coppied then the duuplicate disk should not respond accordingly
    i wnat a program or some help about it
    waiting for you all
    singhrimpy@yahoo.com
    singh_rimpy@hotmail.com

    bye

  2. #2
    Confused Magos's Avatar
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    What do you mean by disk?
    MagosX.com

    Give a man a fish and you feed him for a day.
    Teach a man to fish and you feed him for a lifetime.

  3. #3
    Normal vector Carlos's Avatar
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    Hmm, some kind of copy protection?

    This is not a simple task, which can be shortly answered on a discussion board.

    I assume this is a try to hide some kind of passwort (?).
    Low-level disk access would do it (e.g. writing the encrypted password or checksum to an unused sector on the disk), but this needs some advanced hardware and assembly knowledge.

    vpsingh25
    i am new to programming
    Really hard task, not a "low hanging fruit" for a newbie, isn't it?
    Besides, this software protection technique is not so reliable: many tools allow a sector-to-sector copy of a given drive
    (e.g. Norton's DiskImage).

    There are many other ways to do this :
    - check for Disk Serial Number AND implement some password checking
    - if you are selling your software on diskettes, mark some sectors as bad, and check for these upon each startup
    etc.

    Combining these methods will increase the protection.

    A more advanced technique is hardware copy protection - a device placed on the serial or parallel port, which returns some predefined values when querying it's ports.

    You'd perform a quick search on the net (e.g. on www.google.com with keywords like Software AND copy AND protection AND source), maybe you're lucky and find some ready to use component and/or source code.

    Bye!

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