--- 1/draft-ietf-ipsecme-ikev2-intermediate-05.txt	2021-03-22 13:37:38.634063228 -0700
+++ 2/draft-ietf-ipsecme-ikev2-intermediate-06.txt	2021-03-22 13:37:38.662063924 -0700
@@ -1,18 +1,18 @@
 
 Network Working Group                                         V. Smyslov
 Internet-Draft                                                ELVIS-PLUS
-Intended status: Standards Track                      September 10, 2020
-Expires: March 14, 2021
+Intended status: Standards Track                           March 9, 2021
+Expires: September 10, 2021
 
               Intermediate Exchange in the IKEv2 Protocol
-                draft-ietf-ipsecme-ikev2-intermediate-05
+                draft-ietf-ipsecme-ikev2-intermediate-06
 
 Abstract
 
    This documents defines a new exchange, called Intermediate Exchange,
    for the Internet Key Exchange protocol Version 2 (IKEv2).  This
    exchange can be used for transferring large amount of data in the
    process of IKEv2 Security Association (SA) establishment.
    Introducing Intermediate Exchange allows re-using existing IKE
    fragmentation mechanism, that helps to avoid IP fragmentation of
    large IKE messages, but cannot be used in the initial IKEv2 exchange.
@@ -25,25 +25,25 @@
    Internet-Drafts are working documents of the Internet Engineering
    Task Force (IETF).  Note that other groups may also distribute
    working documents as Internet-Drafts.  The list of current Internet-
    Drafts is at https://datatracker.ietf.org/drafts/current/.
 
    Internet-Drafts are draft documents valid for a maximum of six months
    and may be updated, replaced, or obsoleted by other documents at any
    time.  It is inappropriate to use Internet-Drafts as reference
    material or to cite them other than as "work in progress."
 
-   This Internet-Draft will expire on March 14, 2021.
+   This Internet-Draft will expire on September 10, 2021.
 
 Copyright Notice
 
-   Copyright (c) 2020 IETF Trust and the persons identified as the
+   Copyright (c) 2021 IETF Trust and the persons identified as the
    document authors.  All rights reserved.
 
    This document is subject to BCP 78 and the IETF Trust's Legal
    Provisions Relating to IETF Documents
    (https://trustee.ietf.org/license-info) in effect on the date of
    publication of this document.  Please review these documents
    carefully, as they describe your rights and restrictions with respect
    to this document.  Code Components extracted from this document must
    include Simplified BSD License text as described in Section 4.e of
    the Trust Legal Provisions and are provided without warranty as
@@ -54,23 +54,23 @@
    1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
    2.  Terminology and Notation  . . . . . . . . . . . . . . . . . .   3
    3.  Intermediate Exchange Details . . . . . . . . . . . . . . . .   3
      3.1.  Support for Intermediate Exchange Negotiation . . . . . .   3
      3.2.  Using Intermediate Exchange . . . . . . . . . . . . . . .   4
      3.3.  The IKE_INTERMEDIATE Exchange Protection and
            Authentication  . . . . . . . . . . . . . . . . . . . . .   5
        3.3.1.  Protection of the IKE_INTERMEDIATE Messages . . . . .   5
        3.3.2.  Authentication of the IKE_INTERMEDIATE Exchanges  . .   5
      3.4.  Error Handling in the IKE_INTERMEDIATE Exchange . . . . .   8
-   4.  Interaction with other IKEv2 Extensions . . . . . . . . . . .   8
+   4.  Interaction with other IKEv2 Extensions . . . . . . . . . . .   9
    5.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
-   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
+   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
    7.  Implementation Status . . . . . . . . . . . . . . . . . . . .  10
    8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
    9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
      9.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
      9.2.  Informative References  . . . . . . . . . . . . . . . . .  11
    Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  11
 
 1.  Introduction
 
    The Internet Key Exchange protocol version 2 (IKEv2) defined in
@@ -297,30 +297,34 @@
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ d |
    |                          Message ID                           | r A
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
    |                       Adjusted Length                         | | |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ v |
    |                                                               |   |
    ~                 Unencrypted payloads (if any)                 ~   |
    |                                                               |   |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ^ |
    | Next Payload  |C|  RESERVED   |    Adjusted Payload Length    | | |
-   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ E v
-   |                     Initialization Vector                     | n
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | v
+   |                                                               | |
+   ~                     Initialization Vector                     ~ E
+   |                                                               | E
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ c ^
    |                                                               | r |
    ~             Inner payloads (not yet encrypted)                ~   P
    |                                                               | P |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ l v
    |              Padding (0-255 octets)           |  Pad Length   | d
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+   |                                                               | |
    ~                    Integrity Checksum Data                    ~ |
+   |                                                               | |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ v
 
       Figure 1: Data to Authenticate in the IKE_INTERMEDIATE Exchange
                                  Messages
 
    Figure 1 illustrates the layout of the IntAuth_*_[I/R]_P (denoted as
    P) and the IntAuth_*_[I/R]_A (denoted as A) chunks in case the
    Encrypted payload is not empty.
 
    For the purpose of prf calculation the Length field in the IKE header