Re: problem on windows XP

[Julian P. R. <jul...@gm...>]

Hi again Shachar,

If i am encrypting files that do not already exist on the dst dir, but the
aes symmetric key for that file does exist in the keysdir (since this file
was already encypted before, but simply deleted from the dst dir), is the
same symmetric key already available in keysdir used anyway?
Also, if I understood well, once the RSA key is used to create the symmetric
key, then the RSA key is never used for simple updates of the file (since
the symmetric key is used directly). How much does this speed up the
process?

Also I realised the if a file is changed slightly, and the aes key in the
keysdir is deleted, running an encryption will recreate the key file in
keysdir.
Since this recreated key is the same key encrypted in the file, wouldnt the
private key be needed to recreate the unencrypted aes key in keys dir? Or is
a new key generated from scratch when this happens?

Newxt question..... the man page refers to a gzip file that performs null
compression by redirecting the I/O to cat. I cant seem to find the file in
the source tgz... but my real question is: Is this possible on windows? Is
it possible to bypass compression entirely?

And finally, do you take any precautionary measures to prevent your clients
from choosing wrong dirs, keys etc.. thus generating segmentation faults?

Hopefully this will be my last barrage of 'rsyncrpyto newbie' questions...

Thanks once again
Julian

PS i dont know if you got the email below late yesterday...

OK, I understand... however not too sure about the syntax.. (can i use
> the gzip.exe that came with the rsyncrytpo for windows?)
>
> > Can it be that you are using an encrypted private key? At the moment,
> > rsyncrypto does not support that.
>
> Yep that was the case... I am now happily hot and cold decrypting. Since
> I am new to cryptography, I still cant figure what the pros and cons of
> hot/cold decryption are... the unique "per file" key is also stored in
> the encrypted file itself, so why not just always use the private key to
> decrypt?
> The speed of hot/cold seems to be the same... any hints?... I know i
> need to read up more on the subject...
>
> >> Finally, just a curiosity... in my language (Maltese) Shemesh means
> >> "sun"... is it the same at your end? :)
> >
> > Both my name and my surname have meaning in Hebrew. See
> > http://shemesh.biz/sun.html. Surprisingly enough, my surname's meaning
> > in Hebrew and in Maltese is the same. Do you know of any connection
> > between the languages?
>
> Ah, that makes sense... Maltese is a semitic language with strong
> arabic, spanish, and italian influences (Malta having been conquered by
> everyone and their dog throughout history)... but it remains
> fundamentally semitic.. so there is the interesting connection.
>
> Thanks again.
> Regds
> Julian
>
>
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