Pawel,

Thank you again for your review and feedback.  I provide answers to your 
feedback embedded below.

-- 
 
JG



James Gould
Fellow Engineer
jgo...@verisign.com 
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On 12/19/22, 2:43 AM, "Pawel Kowalik" <kowa...@denic.de> wrote:

    Hi James,

    Thanks for posting the new version incorporating the changes. I reviewed 
    it and have few comments on that:

    1. As the WG consensus seems to be to keep normative language in the 
    form "placeholder text XXXX, MUST NOT be used for redaction" I would 
    recommend to extend Abstract and Introduction accordingly, that the 
    document also specifies allowed methods of RDAP response redaction.

JG - Other forms of redaction can be created and used, which can also result in 
a future update to the draft or RFC.  As an example, the new Redaction by 
Partial Value Method was added in draft-ietf-regext-rdap-redacted-10 to cover a 
newly raised use case.  The proposal to use of placeholder text for redaction 
drove the initial creation of this draft to define an explicit redaction signal 
that didn't touch the content of the response body, which is the reason why 
placeholder text redaction needs to be called out.
  
Do you have a redaction use case that is not effectively covered by the methods 
defined in the draft that needs to be considered?  

Have you implemented placeholder text redaction in a way that can't be 
transitioned to use the redaction extension?  


    2. The description of "path" member in 4.3 is now correctly describing 
    all the cases for different redaction methods, but due to that it became 
    very complex. I would still reconsider, if it wouldn't be better to have 
    2 members "preredactedPath" and "redactedPath", which refer to 
    pre-redacted response and redacted response accordingly. Then for 
    different redaction method you would apply:

    - Redaction By Removal Method: preredactedPath (OPTIONAL, same as path 
    in -10)

    - Redaction by Empty Value Method: redactedPath (MANDATORY, same as path 
    in -10)

    - Redaction by Partial Value Method: redactedPath (MANDATORY, same as 
    path in -10)

    - Redaction by Replacement Value Method: preredactedPath (OPTIONAL, same 
    as path in -10) and redactedPath (MANDATORY, same as replacementPath in -10)

    I see a clear advantage of this approach that the clients can always use 
    "redactedPath" on the response object without tedious logic depending on 
    redaction method.

JG - I agree that embedding the path context (pre or post redaction) into the 
member names provides a more explicit signal.  I would view the members as 
being mutually exclusive, as reflected by the second sentences of the 
descriptions below.  I don't see any impact on the use of the "replacementPath" 
member.  One variance with what you describe is that the "redactedPath" is only 
required for the Redaction by Replacement Value Method when the redacted member 
does exist in the redacted response (e.g., empty instead of removed).  How 
about shortening the member names with some additional normative descriptive 
language below?

"prePath": OPTIONAL JSON expression referencing a redacted JSON field in the 
pre-redacted response.  The "prePath" member MAY be set when the redacted field 
does not exist in the redacted response for the Redaction by Removal Method 
(Section 3.1) and the Redaction by Replacement Value Method (Section 3.4).  The 
"prePath" member MUST NOT be set when the "postPath" member is set.  
"postPath: OPTIONAL JSON expression referencing a redacted JSON field in the 
redacted (post-redacted) response.    The "postPath" member MUST be set when 
the redacted field does exist in the redacted response for the Redaction by 
Empty Value Method (Section 3.2), the Redaction by Partial Value Method 
(Section 3.3), and the Redaction by Replacement Value Method (Section 3.4),  
The "postPath" member MUST NOT be set when the "prePath" member is set.

A nuance is that the "postPath" member is required for the Redaction by 
Replacement Value Method only when the redacted field does exist in the 
redacted response (e.g., empty instead of removed).  The focus of the normative 
language is whether the redacted field exists in the redacted response, where 
the list of the methods applies.  Is this clear?  

    Kind Regards,

    Pawel


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