Encrypt / Decrypt a complete file

belotrei

Member
Very nice code! I've tried this and that's great..

Can crypto control decrypt a file -on the fly-? So no need to always make a temporary one and then delete it after the application is closed. In my project I want to use the already encrypted sql database file, and then decrypt it just when the app read them. But don't want to make a temporary file, because there's always a possibility, while the file is not in the encrypted state, that file (temporary decrypted file) can be copied by user, and.. in that case, the protection is gone.

One more question, Is the decryption process from files need high 'power' of pda's device? Because i don't want it slows down my app's performance.

Thank you..
 

belotrei

Member
Thanks Erel. So the only thing to consider is the performance. I've tried the method at ipaq hx2750 a little bit slow. and at o2 atom exec slower than 2750. At rx3417 faster than atom exec but slower than 2750. At 1940 just 'like' stuck (too long for me)..
 
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