Subject: [ppsp] [Errata Verified] RFC7574 (4880)

From: RFC Errata System <[email-masked]>
Date: Mon, 21 Aug 2017 06:58:21 -0700 (PDT)

The following errata report has been verified for RFC7574,
"Peer-to-Peer Streaming Peer Protocol (PPSPP)". 

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You may review the report below and at:
http://www.rfc-editor.org/errata/eid4880

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Status: Verified
Type: Technical

Reported by: Sung Hei Kim, Chang Kyu Lee <[email-masked]>
Date Reported: 2016-12-07
Verified by: Spencer Dawkins (IESG)

Section: 7.5

Original Text
-------------
   A peer MUST include the content integrity method used by a swarm.
   The code for this option is 3.  Defined values are listed in Table 4.

                   +--------+-------------------------+
                   | Method | Description             |
                   +--------+-------------------------+
                   | 0      | No integrity protection |
                   | 1      | Merkle Hash Tree        |
                   | 2      | Sign All                |
                   | 3      | Unified Merkle Tree     |
                   | 4-255  | Unassigned              |
                   +--------+-------------------------+

            Table 4: PPSPP Content Integrity Protection Methods

Corrected Text
--------------
   A peer MUST include the content integrity method used by a swarm.
   The code for this option is 3.  Defined values are listed in Table 4.

                   +--------+-------------------------+
                   | Method | Description             |
                   +--------+-------------------------+
                   | 0      | Unassigned              |
                   | 1      | Merkle Hash Tree        |
                   | 2      | Sign All                |
                   | 3      | Unified Merkle Tree     |
                   | 4-255  | Unassigned              |
                   +--------+-------------------------+

            Table 4: PPSPP Content Integrity Protection Methods

Notes
-----
As stated in the first sentence of chapter 7.5, “A peer MUST include the content integrity method used by a swarm.”, “No integrity protection” must not be one of the option for PPSPP content integrity protection method. Or, IETF 7574 must define PPSP-PP that does not use the integrity protection method.

The proposed is to remove option of “No integrity protection”  in Table 4.

Spencer: confirmed in conversations with Victor Grishchenko <[email-masked]> on the PPSP mailing list.

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RFC7574 (draft-ietf-ppsp-peer-protocol-12)
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Title               : Peer-to-Peer Streaming Peer Protocol (PPSPP)
Publication Date    : July 2015
Author(s)           : A. Bakker, R. Petrocco, V. Grishchenko
Category            : PROPOSED STANDARD
Source              : Peer to Peer Streaming Protocol
Area                : Transport
Stream              : IETF
Verifying Party     : IESG