RE: Coding Of Public Signature Algorithm Identifier

I took a closer look at X.690 and found that OIDs are coded a bit more
compactly than my first guess.  The OIDs given in RFC 3279 come out as
follows (all numbers in hex):

Algorithm                 Tag    Length  Value

md2WithRSAEncryption:      06      09    2a864886f70d010102
md5WithRSAEncryption       06      09    2a864886f70d010104
sha-1WithRSAEncryption     06      09    2a864886f70d010105
id-dsa-with-sha1           06      07    2a86488e380403
ecdsa-with-SHA1            06      07    2a86488e3d0401

Hence the OIDs range from 9 to 11 octets in total length.  I note a
discrepancy between what RFC 3279 offers and what list participants have
suggested.

> -----Original Message-----
> From: Taylor, Tom-PT [CAR:5N00:EXCH] 
> Sent: Tuesday, January 14, 2003 1:22 PM
> To: Leech, Marcus [CAR:8M70:EXCH]
> Cc: [email protected]
> Subject: RE: Coding Of Public Signature Algorithm Identifier
> 
> 
> I'd estimate something in the order of 20 octets per OID: OID 
> tag, length, and roughly five integers each with tag, length, 
> and value.
> 
> > -----Original Message-----
> > From: Leech, Marcus [CAR:8M70:EXCH]
> > Sent: Tuesday, January 14, 2003 12:56 PM
> > To: Taylor, Tom-PT [CAR:5N00:EXCH]
> > Cc: [email protected]
> > Subject: Re: Coding Of Public Signature Algorithm Identifier
> > 
> > 
> > "Taylor, Tom-PT [CAR:5N00:EXCH]" wrote:
> > > 
> > > 1) use the OIDs.  In that case, how do I specify the
> > encoding in our
> > > record: use only the value portion of the OID as encoded in
> > ASN.1, or
> > > use the entire ASN.1 object?
> > >
> > Much as I dislike OIDs, it might be best here to use the
> > entire ASN.1 object.
> >    It can't be that big, can it?
> > 
> > --
> > 
> ----------------------------------------------------------------------
> > Marcus Leech                             Mail:   Dept 8M70, 
> > MS 012, FITZ
> > Advisor                                  Phone: (ESN) 
> > 393-9145  +1 613 763 9145
> > Security Architecture and Planning       Fax:   (ESN) 
> > 393-9435  +1 613 763 9435
> > Nortel Networks                          [email protected]
> > -----------------Expressed opinions are my own, not my 
> > employer's------
> > 
>