Re: [stir] I-D Action: draft-ietf-stir-certificates-13.txt

Tony Rutkowski <tony@yaanatech.com> Wed, 29 March 2017 17:20 UTC

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Subject: Re: [stir] I-D Action: draft-ietf-stir-certificates-13.txt
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Hi all,

In addition to all the major infirmities
of this draft, it's worth noting:

1. The current version of X.509 is 10/2016

2. The current version of X.520 is 10/2016

3. (88) is already registered to id-mod-mudURLExtn2016

4. Thanks to my ASN.1 maven colleague Mike Hammer
who identified a number of issues.  Might be worth gracing
the module with the ASN.1 godfather Olivier Dubuisson
- especially as his colleague is Philippe Fouquart who
is still the designated SG2 editor for the SPN work item.

There are a significant number of communities and
compliance obligations affected by this draft in addition
to the US Robocall PR effort.

--tony

> TNAuthorizationList ::= SEQUENCE SIZE (1..MAX) OF TNEntry
>
> TNEntry ::= CHOICE {
> 	spc [0] ServiceProviderCodeList,
> 	range [1] TelephoneNumberRange,
> 	one E164Number
> 	}
>
> MH>>> Is this a choice of 2 or 3 items?
>               Seems you can't enumerate item number [2]:  one E164Number.
>
> ServiceProviderCodeList ::= SEQUENCE SIZE (1..3) OF IA5String
>
> TelephoneNumberRange ::= SEQUENCE {
> 	start E164Number,
> 	count INTEGER
> 	}
>
> MH>>> What is the difference between:
> 	Range = TelephoneNumber Range, where
> 		Start is an E164Number, and
> 		Count = 1
>       and
> 	One = E164Number?
>       Two alternate codes means more complex coding.
>
> E164Number ::= IA5String (SIZE (1..15)) (FROM ("0123456789#*"))
>
> MH>>>	E164 numbers can be composed only of "0123456789", no?
> 	So, the use of # and * are currently undefined in this ID.
> 	I would assume that:
> 		# would be an ending digit indicating the end of a shorter than 15 digit
> number.
> 		* would be an ending digit wild-card meaning any phone numbers with
> preceding leading digits.
> 	However, that would render the meaning of "One" ambiguous, and
> 		That would provide another way to do Range, which may complicate code.
> 	Also, what would it mean if the # or * appeared at the beginning or middle of
> a digit string?