Re: SignatureType Attribute OID

I submitted an errata.

http://www.rfc-editor.org/errata_search.php?eid=3757

Russ


On Oct 18, 2013, at 10:03 AM, Russ Housley wrote:

> I'm not sure.  RFC 3183 says:
> 
>   An S/MIME signed attribute is used to indicate the type of signature.
>   This should be used in conjunction with the naming conventions
>   specified in the previous section.  When an S/MIME signed message
>   containing the signature type attribute is received it triggers the
>   software to verify that the correct naming convention has been used.
> 
>   The ASN.1 [4] notation of this attribute is: -
> 
>      SignatureType ::= SEQUENCE OF OBJECT IDENTIFIER
> 
> It seems to me that the specification fails to also say that the signature type attribute is identified by
> 
>>> id-aa-signatureType        OBJECT IDENTIFIER ::= { id-aa 28 }
> 
> Russ
> 
> 
> On Oct 17, 2013, at 6:15 PM, Jim Schaad wrote:
> 
>> Mistype - 
>> 
>> RFC 3183 seems to be where it started from - but is now using a different
>> marker.  However, it seems to have been overloaded in a strange way.  I
>> think this may be a fault in the way the RFC progressed.
>> 
>> Jim
>> 
>> 
>>> -----Original Message-----
>>> From: [email protected] [mailto:[email protected]] On
>>> Behalf Of Russ Housley
>>> Sent: Thursday, October 17, 2013 2:54 PM
>>> To: IETF SMIME
>>> Subject: [smime] SignatureType Attribute OID
>>> 
>>> The S/MIME arc contains an assignment for this OID.
>>> 
>>> id-smime OBJECT IDENTIFIER ::= { iso(1) member-body(2)
>>>         us(840) rsadsi(113549) pkcs(1) pkcs9(9) 16 }
>>> 
>>> id-aa   OBJECT IDENTIFIER ::= { id-smime  2 }  -- attributes
>>> 
>>> id-aa-signatureType        OBJECT IDENTIFIER ::= { id-aa 28 }
>>> 
>>> I cannot find an RFC that makes use of this OID.  Does anyone know where
>> it
>>> it used?  It seems to be related to the Domain Security stuff in RFC 3183,
>> but
>>> it is not used in that document.
>>> 
>>> If no one can point me to a place where this OID is used, I will mark it
>>> "reserved and obsolete".
>>> 
>>> Russ
>> 
>> 
> 
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