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charset="utf-7" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: cert.org X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BN2P110MB1107.NAMP110.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-Network-Message-Id: c66659a8-ecee-4b75-9d9c-08dc86f9a480 X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Jun 2024 13:56:34.4452 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 95a9dce2-04f2-4043-995d-1ec3861911c6 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN2P110MB1558 Message-ID-Hash: BNXICDRO6HUEQ5QW5EXLTN4QP2SRFR5W X-Message-ID-Hash: BNXICDRO6HUEQ5QW5EXLTN4QP2SRFR5W X-MailFrom: rdd@cert.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-mpls.ietf.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: "draft-ietf-mpls-ri-rsvp-frr@ietf.org" , "mpls-chairs@ietf.org" , "mpls@ietf.org" X-Mailman-Version: 3.3.9rc4 Precedence: list Subject: =?utf-8?q?=5Bmpls=5D_Re=3A_Roman_Danyliw=27s_Discuss_on_draft-ietf-mpls-ri-r?= =?utf-8?q?svp-frr-18=3A_=28with_DISCUSS_and_COMMENT=29?= List-Id: Multi-Protocol Label Switching WG Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Hi+ACE- +AD4- -----Original Message----- +AD4- From: Chandrasekar Ramachandran +AD4- Sent: Wednesday, June 5, 2024 8:22 AM +AD4- To: Roman Danyliw +ADs- The IESG +AD4- Cc: draft-ietf-mpls-ri-rsvp-frr+AEA-ietf.org+ADs- mpls-chairs+AEA-iet= f.org+ADs- mpls+AEA-ietf.org +AD4- Subject: RE: +AFs-mpls+AF0- Roman Danyliw's Discuss on draft-ietf-mpl= s-ri-rsvp-frr-18: +AD4- (with DISCUSS and COMMENT) +AD4-=20 +AD4- Warning: External Sender - do not click links or open attachments unl= ess you +AD4- recognize the sender and know the content is safe. +AD4-=20 +AD4-=20 +AD4- Please refer inline (prefixed +AFs-CR+AF0-) for responses. +AD4-=20 +AD4- Thanks, +AD4- Chandra. +AD4-=20 +AD4-=20 +AD4- Juniper Business Use Only +AD4- +AD4- -----Original Message----- +AD4- +AD4- From: Roman Danyliw via Datatracker +ADw-noreply+AEA-ietf.org+A= D4- +AD4- +AD4- Sent: Wednesday, May 29, 2024 2:37 AM +AD4- +AD4- To: The IESG +ADw-iesg+AEA-ietf.org+AD4- +AD4- +AD4- Cc: draft-ietf-mpls-ri-rsvp-frr+AEA-ietf.org+ADs- mpls-chairs+A= EA-ietf.org+ADs- +AD4- +AD4- mpls+AEA-ietf.org +AD4- +AD4- Subject: +AFs-mpls+AF0- Roman Danyliw's Discuss on draft-ietf-m= pls-ri-rsvp-frr-18: +AD4- +AD4- (with DISCUSS and COMMENT) +AD4- +AD4- +AD4- +AD4- +AFs-External Email. Be cautious of content+AF0- +AD4- +AD4- +AD4- +AD4- +AD4- +AD4- Roman Danyliw has entered the following ballot position for +AD4- +AD4- draft-ietf-mpls-ri-rsvp-frr-18: Discuss +AD4- +AD4- +AD4- +AD4- When responding, please keep the subject line intact and reply = to all +AD4- +AD4- email addresses included in the To and CC lines. (Feel free to = cut +AD4- +AD4- this introductory paragraph, however.) +AD4- +AD4- +AD4- +AD4- +AD4- +AD4- Please refer to +AD4- +AD4- https://urldefense.com/v3/+AF8AXw-https://www.ietf.org/about/gr= oups/iesg/sta +AD4- +AD4- tem +AD4- +AD4- ents/handling-ballot-positions/+AF8AXwA7ACEAIQ-NEt6yMaO- +AD4- +AD4- gk+ACE-G9rzzTtk1jM0eBeHTMYsdLgilxZEHzdBz3G8bmjPDat2PCQy-S- +AD4- +AD4- xrRsjoiNFqQZXR+AF8-IIRRYpmZKExw+ACQ- +AD4- +AD4- for more information about how to handle DISCUSS and COMMENT +AD4- +AD4- positions. +AD4- +AD4- +AD4- +AD4- +AD4- +AD4- The document, along with other ballot positions, can be found h= ere: +AD4- +AD4- https://urldefense.com/v3/+AF8AXw-https://datatracker.ietf.org/= doc/draft-iet +AD4- +AD4- f-mpls- +AD4- +AD4- ri-rsvp-frr/+AF8AXwA7ACEAIQ-NEt6yMaO- +AD4- +AD4- gk+ACE-G9rzzTtk1jM0eBeHTMYsdLgilxZEHzdBz3G8bmjPDat2PCQy-S- +AD4- +AD4- xrRsjoiNFqQZXR+AF8-IIRRawJCD8lA+ACQ- +AD4- +AD4- +AD4- +AD4- +AD4- +AD4- +AD4- +AD4- ---------------------------------------------------------------= ------- +AD4- +AD4- DISCUSS: +AD4- +AD4- ---------------------------------------------------------------= ------- +AD4- +AD4- +AD4- +AD4- +ACoAKg- Section 5 +AD4- +AD4- When using RSVP +AD4- +AD4- Cryptographic Authentication +AFs-RFC2747+AF0-, more robust = algorithms +AD4- +AD4- +AFs-RFC2104+AF0- +AFs-FIPS-180-3+AF0- SHOULD be used when c= omputing the keyed +AD4- +AD4- message digest where possible. +AD4- +AD4- +AD4- +AD4- I don+IBk-t intended to open the generic topic of RSVP authenti= cation. +AD4- +AD4- However, I need help understanding the proposed guidance on +AD4- +AD4- cryptographic authentication. +AD4- +AD4- +AD4- +AD4- RFC2104 specifies the core HMAC construction and HMAC-MD5 +AD4- +AD4- +AD4- +AD4- RFC2747 says +IBw-HMAC-MD5 is required as a baseline to be univ= ersally +AD4- +AD4- included in RSVP implementations providing cryptographic +AD4- +AD4- authentication, with other proposals optional+IB0- +AD4- +AD4- +AD4- +AD4- FIPS-180-3 +AD0- specifies SHA-1, SHA-256, SHA-384, and SHA-512 +AD4- +AD4- +AD4- +AD4- What exactly is the recommendation on the +IBw-more robust algo= rithms +ICY- +AD4- +AD4- where possible+IB0-? Across all the referenced drafts, HMAC-MD= 5, -SHA1, +AD4- +AD4- -SHA256, - +AD4- +AD4- SHA386 and -SHA512 were cited. +AD4- +AD4- +AD4- +AD4- Is this document intending to recommend MD5 and SHA1 as +IBw-ro= bust +AD4- +AD4- algorithms+IB0-? My recommendation would be that implementation= s using +AD4- +AD4- RSVP Cryptographic Authentication SHOULD use HMAC-256/-386/-512= . +AD4- +AD4- Based on the RFC2747, HMAC-MD5 remains MTI. +AD4- +AD4- +AD4-=20 +AD4- +AFs-CR+AF0- The initial versions of the draft did not explicitly rec= ommend +AD4- authentication mechanisms and only contained generic text taking cue = from +AD4- existing RFCs in RSVP. +AD4- Subsequent to your comments in 2019 (mail thread url - +AD4- https://mailarchive.ietf.org/arch/msg/mpls/DQluEtXhVh06Urwqb7ncc3X3dU= E/ +AD4- ), the sentence +ACI-When using RSVP Cryptographic Authentication +AF= s-RFC2747+AF0-, +AD4- more robust algorithms +AFs-RFC2104+AF0- +AFs-FIPS-180-3+AF0- SHOULD = be used when +AD4- computing the keyed message digest where possible+ACI- was introduced= without +AD4- explicitly specifying the algorithms. +AD4-=20 +AD4- Will the following taking from your original recommendation be good? = FIPS- +AD4- 180-3 document has been superseded by FIPS-180-4 and hence the change= in +AD4- reference from your original recommended NEW text in +AD4- https://mailarchive.ietf.org/arch/msg/mpls/DQluEtXhVh06Urwqb7ncc3X3dU= E/. +AD4-=20 +AD4- OLD: +AD4- The security considerations pertaining to +AFs-RFC2961+AF0-, +AFs-= RFC4090+AF0-, +AD4- +AFs-RFC8370+AF0-, +AFs-RFC8796+AF0- and +AFs-RFC5920+AF0- remain = relevant. When using RSVP +AD4- Cryptographic Authentication +AFs-RFC2747+AF0-, more robust algori= thms +AD4- +AFs-RFC2104+AF0- +AFs-FIPS-180-3+AF0- SHOULD be used when computi= ng the keyed +AD4- message digest where possible. +AD4-=20 +AD4- NEW: +AD4- The security considerations pertaining to the original RSVP protoc= ol +AD4- +AFs-RFC2205+AF0-, +AFs-RFC3209+AF0- and +AFs-RFC5920+AF0- remain = relevant. When using +AD4- RSVP Cryptographic Authentication +AFs-RFC2747+AF0-, more robust a= lgorithms +AD4- such as HMAC-SHA256, HMAC-SHA384, or HMAC-SHA-512 +AD4- +AFs-RFC2104+AF0AWw-FIPS-180-4+AF0- SHOULD be used when computing = the keyed +AD4- message digest where possible. Yes, that new text would address my feedback. Thanks, Roman