Hi Brian,
I think the IANA registry actually has the key length specified as
part of the suite enumeration.
Examples are:
TLS_RSA_WITH_AES_128_CBC_SHA256
TLS_RSA_WITH_AES_256_CBC_SHA256
There are other suites that don't specify numeric key sizes, but in
these cases, the algorithm itself
(3DES for example) work with a specific key size that doesn't vary.
In this case, we may be able to just specify that we're talking about
a minimum suite, with a reference to RFC 5246 and
the IANA registry itself.
Randy
On Jan 30, 2009, at 6:26 PM, Brian Smithson wrote:
> I am still wondering how these two attributes can be used in
> practice. I
> know that we can uniquely identify cipher suites using the IANA
> registry, but is there an authoritative source to specify that one
> suite
> is "more minimum" than another? And if you consider different key
> lengths that might be acceptable for a given suite, then can we really
> say that suite X is more minimum than suite Y even if an HCD
> supports a
> relatively long key length for X but only supports a relatively short
> one for Y?
>> --
> Regards,
> Brian Smithson
> PM, Security Research
> PMP, CISSP, CISA, ISO 27000 PA
> Advanced Imaging and Network Technologies
> Ricoh Americas Corporation
> (408)346-4435
>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.pwg.org/archives/ids/attachments/20090130/af6053d9/attachment.html