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How to write c++ real-time file encryptor? May be anybody has sources. Thanks!
Posted 6-Dec-12 6:33am
bitov271.1K
Comments
Kuthuparakkal at 6-Dec-12 11:37am
   
Whats real-time file encryptor?
ProgramFOX at 6-Dec-12 11:48am
   
It's on-the-fly encryption.
ThatsAlok at 6-Dec-12 21:37pm
   
is there any performance contraint.. since encrypting file is time consuming, based on different method

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Solution 1

Strange question.
Use CryptAPI the CryptEncrypt function and encrypt block by block.
Description of function:
http://msdn.microsoft.com/en-us/library/windows/desktop/aa379924(v=vs.85).aspx[^]
Example of file encryption this example you can easy modify for adding data once it arrive:
http://msdn.microsoft.com/en-us/library/windows/desktop/aa382358(v=vs.85).aspx[^]
Regards,
Maxim.
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