On Mon, 21 Oct 2002 13:55, vss wrote:
> Hi all.
>
> I am just working on a wee project at the moment, and I wanted to save a
> items in a list to file.
> I ALSO wanted the data to be a bit jumbled to look at, just to put people
> off. I.e. if it looks like HEX, people tend to leave files alone.
>
> To my HORROR !! I opend the file up in note pade, only to fine it was
> plain text :-( :-(
I have a component which is both a XML parser/writer and allows you to save to
a file in encrypted format. You just set the password for the file and call
its SaveToFile( "filename" ) method. Then to load just set the password and
call LoadFromFile( "filename" ).
Although its easy to use the encryption is very strong - well at least as
strong as the password is secure. Since security is not vital you can hard
code the password in your code.
For serious security I should point out that the 'password' can be any length
- it is passed through a MD5 routine before being used as the key material
for AES.
What also occured to me was running the input XML through a compressor prior
to encryption. This way it speeds things up, as :
1. Compressing the data reduces the amount of time the encryption will take.
2. Reducing the amount of data means there is less data for the HDD to store
and retrieve - and is thus faster.
It might be faster to compress and encrypt than to store text directly to
disk! I'll have to implement compression at some stage.
Regards,
Peter
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