Security Classes for IoT devices
draft-urien-lwig-security-classes-00

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Last updated 2018-11-22
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LWIG Working Group                                           P. Urien 
  Internet Draft                                      Telecom ParisTech 
  Intended status: Experimental                                         
                                                                        
                                                       November 22 2018 
  Expires: May 2019 
 
                     Security Classes for IoT devices 
                  draft-urien-lwig-security-classes-00.txt 
    
    
Abstract 
    
   This draft attempts to define security classes for constraint IoT 
   devices. A device security is characterized by five Boolean security 
   attributes: one time programmable memory (OTP), firmware loader 
   (FLD), secure firmware loader (FLD-SEC), tamper resistant key (TRT-
   KEY) and diversified key (DIV-KEY). 
    
   This leads to the definition of 6 classes of devices, embedding or 
   not OTP resource, whose security increases with the class number (0 
   to 5). The suffix + indicates OTP availability. 
    
Requirements Language 
    
   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", 
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this 
   document are to be interpreted as described in RFC 2119. 
    
Status of this Memo 
    
   This Internet-Draft is submitted in full conformance with the 
   provisions of BCP 78 and BCP 79. 
    
   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 http://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 May 2019. 
    
   . 

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Copyright Notice 
    
   Copyright (c) 2018 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 
   (http://trustee.ietf.org/license-info) in effect on the date of 
   publication of this document. Please review these documents 
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   warranty as described in the Simplified BSD License. 
    
    

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  Security Classes for IoT devices                       November 2018 
 
Table of Contents 
   Abstract........................................................... 1 
   Requirements Language.............................................. 1 
   Status of this Memo................................................ 1 
   Copyright Notice................................................... 2 
   1 Overview......................................................... 4 
   2 Security Attributes.............................................. 6 
      2.1 One Time Programmable Memory, OTP........................... 6 
      2.2 Firmware Loader, FLD........................................ 6 
      2.3 Secure Firmware Loader, FLD-SEC............................. 6 
      2.4 Tamper Resistant Key, TRT-KEY............................... 6 
      2.5 Diversified Key, DIV-KEY.................................... 7 
   3 IANA Considerations.............................................. 7 
   4 Security Considerations.......................................... 7 
   5 References....................................................... 7 
      5.1 Normative References........................................ 7 
      5.2 Informative References...................................... 7 
   6 Authors' Addresses............................................... 7 
 

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  Security Classes for IoT devices                       November 2018 
 
1 Overview 
    
   This draft attempts to define security classes for IoT devices, 
   supporting SUIT [SUIT] protocols. The goal is to provide a 
   qualitative estimation of risks induced by firmware remote updates 
   according to device logical and hardware security resources. 
    
   According to this draft a device comprises a main processor (MP), an 
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