On Thu, 28 Jul 2011 10:44:06 +0400, Alex Peshkoff <peshk...@mail.ru> wrote:
> On 07/27/11 17:10, Adriano dos Santos Fernandes wrote:
>>  From FB POV, signed code for sysadmin means nothing. Sysadmin should 
>> just be able to put files where it wants and like UDFs, if it's in the 
>> right place it should be used.
>>
>> What I see good about code signing is that sysadmin could delegate code 
>> installation to others users (or just the DBA) from remote*.
>>
>> So the certificate (public key) is put on the server, and anyone able to

>> sign the binaries with the correspondent private key are good people.
> 
> I like the idea.
> 
>> * In the Java plugin, users can install code (in the database) from 
>> client application or from already installed external routines. These 
>> external routines are just wrappers with runs the same client code, but 
>> now in the server.
> 
> As long as mentioned restrictions (browser-like mode) are applied, there
> is no big need to sign Java code.

In general for Java (if you look at applets and Java WebStart), signed code
(with a trusted certificate) is allowed more privileges than
unsigned/untrusted code. Maybe a similar construct is useful for privilege
escalation where a specific parts of Java code needs more access (eg local
filesystem access, or access to other hosts, etc).

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