New Cryptographic Algorithms for HIP
draft-moskowitz-hip-new-crypto-04

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HIP                                                         R. Moskowitz
Internet-Draft                                            HTT Consulting
Updates: 7401 (if approved)                                      S. Card
Intended status: Standards Track                         A. Wiethuechter
Expires: 26 July 2020                                      AX Enterprize
                                                         23 January 2020

                  New Cryptographic Algorithms for HIP
                   draft-moskowitz-hip-new-crypto-04

Abstract

   This document provides new cryptographic algorithms to be used with
   HIP.  The Edwards Elliptic Curve and the Keccak sponge functions are
   the main focus.  The HIP parameters and processing instructions
   impacted by these algorithms are defined.

Status of This Memo

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   This Internet-Draft will expire on 26 July 2020.

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   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   provided without warranty as described in the Simplified BSD License.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terms and Definitions . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Requirements Terminology  . . . . . . . . . . . . . . . .   3
     2.2.  Definitions . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  HIP Parameter values for new Crytpo . . . . . . . . . . . . .   4
     3.1.  Elliptic Curves for Diffie-Hellman  . . . . . . . . . . .   4
       3.1.1.  DIFFIE_HELLMAN  . . . . . . . . . . . . . . . . . . .   4
     3.2.  Edward Digital Signature Algorithm  . . . . . . . . . . .   4
       3.2.1.  HOST_ID . . . . . . . . . . . . . . . . . . . . . . .   5
       3.2.2.  HIT_SUITE_LIST  . . . . . . . . . . . . . . . . . . .   5
     3.3.  Hashing with the Keccak Function  . . . . . . . . . . . .   6
       3.3.1.  The Keccak Permutation  . . . . . . . . . . . . . . .   6
       3.3.2.  RHASH . . . . . . . . . . . . . . . . . . . . . . . .   7
       3.3.3.  HIP_MAC and HIP_MAC2  . . . . . . . . . . . . . . . .   7
     3.4.  HIP Cipher  . . . . . . . . . . . . . . . . . . . . . . .   7
       3.4.1.  HIP_CIPHER  . . . . . . . . . . . . . . . . . . . . .   7
   4.  Generating a HIT from an HI . . . . . . . . . . . . . . . . .   8
   5.  HIP KEYMAT Generation . . . . . . . . . . . . . . . . . . . .   8
   6.  Using Keccak for a Pseudorandom Function  . . . . . . . . . .   8
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
     8.1.  Keymat vulnerabilities  . . . . . . . . . . . . . . . . .   9
     8.2.  KMAC Security as a KDF  . . . . . . . . . . . . . . . . .   9
   9.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  10
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  10
     10.2.  Informative References . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   This document adds new cryptographic algorithms for HIPv2 [RFC7401].
   This includes:

   *  New elliptic curves for ECDH.

   *  The Edwards Elliptic Curve Digital Signature Algorithm (EdDSA)
      used in Host Identities (HI) and for Base Exchange (BEX)
      signatures.

   *  Hashes used in Host Identity Tag (HIT) generation, and wherever
      else hashes are needed.

   *  Keyed hashes used for KEYMAT generation and packet MACing
      operations.

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