Bacula-users

Re: [Bacula-users] file signatures PKI vs FileSet

2012-09-28 07:31:28
Subject: Re: [Bacula-users] file signatures PKI vs FileSet
From: lst_hoe02 AT kwsoft DOT de
To: bacula-users AT lists.sourceforge DOT net
Date: Fri, 28 Sep 2012 13:29:13 +0200
Zitat von Radosław Korzeniewski <radoslaw AT korzeniewski DOT net>:

> Hello,
>
> 2012/9/28 <lst_hoe02 AT kwsoft DOT de>
>>
>> - PKI Signature ensures that the client FD can verify on restore that
>> the data are actually saved by itself signed with the private key
>>
>
> Correct.
>
>
>> - PKI Encryption ensures that no one without any of the private keys
>> used at backup time can read the data
>>
>
> And Master Key if configured. :)
>
>
>> - The FileSet signature (md5/sha) is used to compare (at Bacula SD?)
>> if the data read are unaltered regarding the hash value stored in the
>> database
>>
>
> I think fileset signature is not used during restore. :) I can't
> find appropriate code in extract_data function. Maybe it is computed
> elsewhere.

As far as i know the fielset signature is used for verify jobs, so it  
would be the Storage Daemon using it and not the File Daemon, no?

>>
>> With this in mind we will switch off PKI signatures to eventuelly
>> (re)gain some speed.
>>
>>
> It's a good idea. Especially that pki signatures are computed after whole
> file restore, which could be slow.

Thanks for confirming

Andreas



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