> Am 02.04.2015 um 17:08 schrieb Osterweil, Eric <[email protected]>:
> 
> 
> On Apr 2, 2015, at 10:23 AM, Olafur Gudmundsson <[email protected]> wrote:
> 
>> <chair-hat on> 
>> The drafts will be advanced with the same lookup mechanism. 
>> The process is defined in OPENPGP draft, the SMIME draft will follow OPENPGP 
>> lead in email address “transformation”. 
> 
> Hey all,
> 
> As a clarifying side comment (to the hashing algo): there is still some 
> interest in having _encr and _sign labels in the SMIMEA RR’s lookup name.  
> imho, this can offer a lot of benefits in managing user preference when 
> looking up the association between a mailbox and crypto material.  I only 
> mention that because I think this could be seen as part of the ``lookup 
> mechanism.’’
> 
> libsmaug uses these labels (as well as our soon-to-be available provisioning 
> portal).

Just a question for ._encr and ._sign:

Do you really plan to store private keys in public DNS? Is it, what ._sign will 
be used for? Isn’t this really a security issue?

I am not a DNS expert, but isn’t it possible to walk through a DNS zone using 
NSEC and get all records of a zone and therefor you also would get all private 
keys in the subdomain ._sign?

I personally only would store public keys in DNS for opportunistic encryption. 
Therefor I would not see a need for an extra subdomain ._encr (and of course 
not ._sign)

Christian
--
Bachelor of Science Informatik
Erlenwiese 14, 36304 Alsfeld
T: +49 6631 78823400, F: +49 6631 78823409, M: +49 171 9905345
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