Uniform Data Fingerprint (UDF)
draft-hallambaker-udf-06

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Last updated 2017-08-14
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Network Working Group                                    P. Hallam-Baker
Internet-Draft                                         Comodo Group Inc.
Intended status: Informational                           August 14, 2017
Expires: February 15, 2018

                     Uniform Data Fingerprint (UDF)
                        draft-hallambaker-udf-06

Abstract

   This document is also available online at
   http://prismproof.org/Documents/draft-hallambaker-udf.html .

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
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   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 February 15, 2018.

Copyright Notice

   Copyright (c) 2017 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
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   described in the Simplified BSD License.

Hallam-Baker            Expires February 15, 2018               [Page 1]
Internet-Draft       Uniform Data Fingerprint (UDF)          August 2017

Table of Contents

   1.  Abstract  . . . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Algorithm Identifier  . . . . . . . . . . . . . . . . . .   4
     2.2.  Content Type Identifier . . . . . . . . . . . . . . . . .   4
     2.3.  Representation  . . . . . . . . . . . . . . . . . . . . .   5
     2.4.  Truncation  . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Definitions . . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  Requirements Language . . . . . . . . . . . . . . . . . .   6
   4.  Encoding  . . . . . . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Binary Fingerprint Value  . . . . . . . . . . . . . . . .   7
       4.1.1.  Version ID  . . . . . . . . . . . . . . . . . . . . .   7
     4.2.  Truncation  . . . . . . . . . . . . . . . . . . . . . . .   8
     4.3.  Base32 Representation . . . . . . . . . . . . . . . . . .   8
     4.4.  Examples  . . . . . . . . . . . . . . . . . . . . . . . .   8
       4.4.1.  Using SHA-2-512 Digest  . . . . . . . . . . . . . . .   8
     4.5.  Fingerprint Improvement . . . . . . . . . . . . . . . . .   9
     4.6.  Compressed Presentation . . . . . . . . . . . . . . . . .   9
     4.7.  Identifiers formed using UDFs . . . . . . . . . . . . . .   9
       4.7.1.  URI Representation  . . . . . . . . . . . . . . . . .  10
       4.7.2.  DNS Name  . . . . . . . . . . . . . . . . . . . . . .  10
   5.  Content Types . . . . . . . . . . . . . . . . . . . . . . . .  11
     5.1.  PKIX Certificates and Keys  . . . . . . . . . . . . . . .  11
     5.2.  OpenPGP Key . . . . . . . . . . . . . . . . . . . . . . .  11
     5.3.  DNSSEC  . . . . . . . . . . . . . . . . . . . . . . . . .  11
   6.  Additional UDF Renderings . . . . . . . . . . . . . . . . . .  12
     6.1.  Machine Readable Rendering  . . . . . . . . . . . . . . .  12
     6.2.  Word Lists  . . . . . . . . . . . . . . . . . . . . . . .  12
     6.3.  Image List  . . . . . . . . . . . . . . . . . . . . . . .  12
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
     7.1.  Work Factor and Precision . . . . . . . . . . . . . . . .  13
     7.2.  Semantic Substitution . . . . . . . . . . . . . . . . . .  14
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
     8.1.  URI Registration  . . . . . . . . . . . . . . . . . . . .  14
     8.2.  Content Type Registration . . . . . . . . . . . . . . . .  14
     8.3.  Version Registry  . . . . . . . . . . . . . . . . . . . .  15
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  15
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  15
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  15
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