Data Structure for the Security Suitability of Cryptographic Algorithms (DSSC)
RFC 5698

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Network Working Group                                            T. Kunz
Request for Comments: 5698                                Fraunhofer SIT
Category: Standards Track                                     S. Okunick
                                                    pawisda systems GmbH
                                                             U. Pordesch
                                                 Fraunhofer Gesellschaft
                                                           November 2009

              Data Structure for the Security Suitability
                   of Cryptographic Algorithms (DSSC)

Abstract

   Since cryptographic algorithms can become weak over the years, it is
   necessary to evaluate their security suitability.  When signing or
   verifying data, or when encrypting or decrypting data, these
   evaluations must be considered.  This document specifies a data
   structure that enables an automated analysis of the security
   suitability of a given cryptographic algorithm at a given point of
   time, which may be in the past, the present, or the future.

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (c) 2009 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
   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
   described in the BSD License.

Kunz, et al.                Standards Track                     [Page 1]
RFC 5698                          DSSC                     November 2009

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Kunz, et al.                Standards Track                     [Page 2]
RFC 5698                          DSSC                     November 2009

Table of Contents

   1. Introduction ....................................................4
      1.1. Motivation .................................................4
      1.2. Terminology ................................................5
           1.2.1. Conventions Used in This Document ...................5
      1.3. Use Cases ..................................................5
   2. Requirements and Assumptions ....................................5
      2.1. Requirements ...............................................6
      2.2. Assumptions ................................................6
   3. Data Structures .................................................7
      3.1. SecuritySuitabilityPolicy ..................................7
      3.2. PolicyName .................................................8
      3.3. Publisher ..................................................9
      3.4. PolicyIssueDate ............................................9
      3.5. NextUpdate .................................................9
      3.6. Usage ......................................................9
      3.7. Algorithm ..................................................9
      3.8. AlgorithmIdentifier .......................................10
      3.9. Evaluation ................................................10
      3.10. Parameter ................................................11
      3.11. Validity .................................................12
      3.12. Information ..............................................12
      3.13. Signature ................................................12
   4. DSSC Policies ..................................................13
   5. Definition of Parameters .......................................13