[ntpwg] NTP WG Last Call:draft-ietf-ntp-autokey-03.txt

David L. Mills mills at udel.edu
Fri Aug 8 18:08:50 UTC 2008


Guys,

Oop; Danny speaks of the autokey last call, not the NTPv4. I can take 
care of this.

Dave

David L. Mills wrote:

> Brian,
>
> I don't have the XML for the current version 10. Can you make the changes?
>
> Dave
>
> Danny Mayer wrote:
>
>> Here is my review of the document. I have read the document and except
>> for the minors issues detailed below, I believe that it is ready to be
>> moved forward.
>>
>> P1. Header
>> Obsoletes RFC1305. Autokey is not described in RFC 1305 and in any
>> case this is an Informational RFC rather than standards track and
>> should not be able to obsolete any standards track RFC. That would
>> require another standards track RFC. I am however supportive of making
>> this a standards track RFC.
>>
>> P7 Section 3
>> Change "with exceptions as noted in the NTP software documentation" to
>> "with exceptions as noted in the NTPv4 RFC [Reference here]."
>>
>> P7 Section 3 Item 1
>> change the reference of [RFC1305] to [NTPv4 RFC].
>>
>> P12 Section 5
>> Change "posts the client keys on a public web site" to "delivers the
>> client keys by secure means"
>>
>> P14 Item 1
>> Change "The girls" to "The servers"
>>
>> P17 at top of page
>> The sentence "In order to foil such attacks, every Autokey message
>> carries a timestamp in the form of the NTP seconds when it was. "
>> is missing a word or two at the end. Please complete the sentence. Is
>> this just missing the word "created"?
>>
>> P18 Last item: Cookie exchange
>> "The request includes the public key of the." is missing a word. Is
>> this meant to be "server"?
>>
>> P19 Second item: Sign exchange
>> "It
>> extracts the subject, issuer, and extension fields, builds a new
>> certificate with these data along with its own serial number and
>> expiration time, then signs it using its own public key and
>> includes it in the response."
>>
>> I would have expected it to use its private key to sign the response
>> not its public key or am I misunderstanding the design?
>>
>> P22 Bottom of page
>> Change "remaining data are the MAC" to "remaining data is the MAC"
>> (singular, not plural, there's only one MAC).
>> Change "lengthuses uses" to "length uses"
>>
>> P21 Section 10 Autokey Protocol Messages
>> Add a separate paragraph after the first paragraph that states the
>> following:
>> "The following terms: light, lit, etc. means that the bit value is set
>> to 1, while the terms dark, dim, etc. means that the bit value is set
>> to 0".
>> This is necessary since the terms are used liberally throughout this
>> section without assigning a specific meaning to them.
>>
>> P27 Section 11.1
>> The term livelock is used without being defined as to its meaning.
>>
>> P30 Section 11.4.1 Last sentence
>> Change "This example and others assumes the IFF identity scheme has
>> been selected in the parameter exchange.." to
>> "The following example and others assumes the IFF identity scheme has
>> been selected in the parameter exchange."
>>
>> P34 second paragraph from bottom
>> "In order to reduce
>> the vulnerability in such cases, the crypto-NAK, as well as all
>> responses, is believed only if the result of a previous packet sent
>> by the client and not a replay, as confirmed by the NTP on-wire
>> protocol."
>> to
>> "In order to reduce
>> the vulnerability in such cases, the crypto-NAK, as well as all
>> responses, is believed only if the result of a previous packet sent
>> by the client is not a replay, as confirmed by the NTP on-wire
>> protocol."
>> I'm changing "and not a replay" to "is not a replay" which is what I
>> believe is the intent of the sentence.
>>
>> P35 Section 11.7
>> Change "tempoerarily revers" to "temporarily reverts"
>>
>> P37 Section 12
>> "Any IANA registries needed?" to
>> "IANA is requested to add to the Extension Field Types associated with
>> the NTP protocol (see NTPv4 RFC section 16), the values 1 through 7
>> for the autokey protocol."
>>
>> Please let me know if you need additional clarification on these items.
>>
>> Danny
>
>
>
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