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AVTCore                                                           W. Kim
Internet-Draft                                                    J. Lee
Intended status: Standards Track                                 J. Park
Expires: May 17, 2017                                            D. Kwon
                                                                    NSRI
                                                                  D. Kim
                                                           Kookmin Univ.
                                                       November 13, 2016


 The Addition of SRTP crypto suites based on the ARIA algorithms to the
                       SDP Security Descriptions
                    draft-ietf-avtcore-aria-sdes-02

Abstract

   This document defines SRTP crypto suites based on the ARIA block
   cipher algorithm for use with the Session Description Protocol (SDP)
   security descriptions.

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
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   Internet-Drafts are draft documents valid for a maximum of six months
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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 May 17, 2017.

Copyright Notice

   Copyright (c) 2016 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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   to this document.  Code Components extracted from this document must



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   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 Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  ARIA  . . . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.2.  SRTP Crypto Suites  . . . . . . . . . . . . . . . . . . .   2
     1.3.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Parameters  . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   4.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     4.1.  Normative References  . . . . . . . . . . . . . . . . . .   7
     4.2.  Informative References  . . . . . . . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   This document defines the SDP Security Descriptions attributes
   [RFC4568] corresponding to the ARIA transforms which are defined in
   [I-D.ietf-avtcore-aria-srtp].

1.1.  ARIA

   ARIA is a general-purpose block cipher algorithm developed by Korean
   cryptographers in 2003.  It is an iterated block cipher with 128-,
   192-, and 256-bit keys and encrypts 128-bit blocks in 12, 14, and 16
   rounds, depending on the key size.  It is secure and suitable for
   most software and hardware implementations on 32-bit and 8-bit
   processors.  It was established as a Korean standard block cipher
   algorithm in 2004 [ARIAKS] and has been widely used in Korea,
   especially for government-to-public services.  It was included in
   PKCS #11 in 2007 [ARIAPKCS].  The algorithm specification and object
   identifiers are described in [RFC5794].

1.2.  SRTP Crypto Suites

   The transforms based on ARIA and the corresponding SRTP protection
   profiles for DTLS-SRTP are defined in [I-D.ietf-avtcore-aria-srtp].
   The SDP Security Descriptions [RFC4568] crypto suites corresponding
   to ARIA transforms [I-D.ietf-avtcore-aria-srtp] are sets as shown in
   Table 1.








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    +---------------------------+-----------------+------------------+
    |            Name           | Enc. Key Length | Auth. Tag Length |
    +---------------------------+-----------------+------------------+
    | ARIA_128_CTR_HMAC_SHA1_80 |    16 octets    |    10 octets     |
    | ARIA_128_CTR_HMAC_SHA1_32 |    16 octets    |     4 octets     |
    | ARIA_192_CTR_HMAC_SHA1_80 |    24 octets    |    10 octets     |
    | ARIA_192_CTR_HMAC_SHA1_32 |    24 octets    |     4 octets     |
    | ARIA_256_CTR_HMAC_SHA1_80 |    32 octets    |    10 octets     |
    | ARIA_256_CTR_HMAC_SHA1_32 |    32 octets    |     4 octets     |
    |     AEAD_ARIA_128_GCM     |    16 octets    |    16 octets     |
    |     AEAD_ARIA_256_GCM     |    32 octets    |    16 octets     |
    +---------------------------+-----------------+------------------+

                   Table 1: ARIA Crypto Suites for SRTP

1.3.  Terminology

   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 [RFC2119].

2.  Parameters

   The parameters in each crypto suite listed in Table 1 are described
   for use with the SDP Security Descriptions attributes [RFC4568].

          +---------------------------------+------------------+
          | Parameter                       | Value            |
          +---------------------------------+------------------+
          | Master key length               | 128 bits         |
          | Master salt length              | 112 bits         |
          | Key Derivation Function         | ARIA_128_CTR_PRF |
          | Default key lifetime (SRTP)     | 2^48 packets     |
          | Default key lifetime (SRTCP)    | 2^31 packets     |
          | Cipher (for SRTP and SRTCP)     | ARIA_128_CTR     |
          | SRTP authentication function    | HMAC-SHA1        |
          | SRTP authentication key length  | 160 bits         |
          | SRTP authentication tag length  | 80 bits          |
          | SRTCP authentication function   | HMAC-SHA1        |
          | SRTCP authentication key length | 160 bits         |
          | SRTCP authentication tag length | 80 bits          |
          +---------------------------------+------------------+

            Table 2: The ARIA_128_CTR_HMAC_SHA1_80 Crypto Suite







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          +---------------------------------+------------------+
          | Parameter                       | Value            |
          +---------------------------------+------------------+
          | Master key length               | 128 bits         |
          | Master salt length              | 112 bits         |
          | Key Derivation Function         | ARIA_128_CTR_PRF |
          | Default key lifetime (SRTP)     | 2^48 packets     |
          | Default key lifetime (SRTCP)    | 2^31 packets     |
          | Cipher (for SRTP and SRTCP)     | ARIA_128_CTR     |
          | SRTP authentication function    | HMAC-SHA1        |
          | SRTP authentication key length  | 160 bits         |
          | SRTP authentication tag length  | 32 bits          |
          | SRTCP authentication function   | HMAC-SHA1        |
          | SRTCP authentication key length | 160 bits         |
          | SRTCP authentication tag length | 80 bits          |
          +---------------------------------+------------------+

            Table 3: The ARIA_128_CTR_HMAC_SHA1_32 Crypto Suite

          +---------------------------------+------------------+
          | Parameter                       | Value            |
          +---------------------------------+------------------+
          | Master key length               | 192 bits         |
          | Master salt length              | 112 bits         |
          | Key Derivation Function         | ARIA_192_CTR_PRF |
          | Default key lifetime (SRTP)     | 2^48 packets     |
          | Default key lifetime (SRTCP)    | 2^31 packets     |
          | Cipher (for SRTP and SRTCP)     | ARIA_192_CTR     |
          | SRTP authentication function    | HMAC-SHA1        |
          | SRTP authentication key length  | 160 bits         |
          | SRTP authentication tag length  | 80 bits          |
          | SRTCP authentication function   | HMAC-SHA1        |
          | SRTCP authentication key length | 160 bits         |
          | SRTCP authentication tag length | 80 bits          |
          +---------------------------------+------------------+

            Table 4: The ARIA_192_CTR_HMAC_SHA1_80 Crypto Suite














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          +---------------------------------+------------------+
          | Parameter                       | Value            |
          +---------------------------------+------------------+
          | Master key length               | 192 bits         |
          | Master salt length              | 112 bits         |
          | Key Derivation Function         | ARIA_192_CTR_PRF |
          | Default key lifetime (SRTP)     | 2^48 packets     |
          | Default key lifetime (SRTCP)    | 2^31 packets     |
          | Cipher (for SRTP and SRTCP)     | ARIA_192_CTR     |
          | SRTP authentication function    | HMAC-SHA1        |
          | SRTP authentication key length  | 160 bits         |
          | SRTP authentication tag length  | 32 bits          |
          | SRTCP authentication function   | HMAC-SHA1        |
          | SRTCP authentication key length | 160 bits         |
          | SRTCP authentication tag length | 80 bits          |
          +---------------------------------+------------------+

            Table 5: The ARIA_192_CTR_HMAC_SHA1_32 Crypto Suite

          +---------------------------------+------------------+
          | Parameter                       | Value            |
          +---------------------------------+------------------+
          | Master key length               | 256 bits         |
          | Master salt length              | 112 bits         |
          | Key Derivation Function         | ARIA_256_CTR_PRF |
          | Default key lifetime (SRTP)     | 2^48 packets     |
          | Default key lifetime (SRTCP)    | 2^31 packets     |
          | Cipher (for SRTP and SRTCP)     | ARIA_256_CTR     |
          | SRTP authentication function    | HMAC-SHA1        |
          | SRTP authentication key length  | 160 bits         |
          | SRTP authentication tag length  | 80 bits          |
          | SRTCP authentication function   | HMAC-SHA1        |
          | SRTCP authentication key length | 160 bits         |
          | SRTCP authentication tag length | 80 bits          |
          +---------------------------------+------------------+

            Table 6: The ARIA_256_CTR_HMAC_SHA1_80 Crypto Suite














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          +---------------------------------+------------------+
          | Parameter                       | Value            |
          +---------------------------------+------------------+
          | Master key length               | 256 bits         |
          | Master salt length              | 112 bits         |
          | Key Derivation Function         | ARIA_256_CTR_PRF |
          | Default key lifetime (SRTP)     | 2^48 packets     |
          | Default key lifetime (SRTCP)    | 2^31 packets     |
          | Cipher (for SRTP and SRTCP)     | ARIA_256_CTR     |
          | SRTP authentication function    | HMAC-SHA1        |
          | SRTP authentication key length  | 160 bits         |
          | SRTP authentication tag length  | 32 bits          |
          | SRTCP authentication function   | HMAC-SHA1        |
          | SRTCP authentication key length | 160 bits         |
          | SRTCP authentication tag length | 80 bits          |
          +---------------------------------+------------------+

            Table 7: The ARIA_256_CTR_HMAC_SHA1_32 Crypto Suite

          +--------------------------------+-------------------+
          | Parameter                      | Value             |
          +--------------------------------+-------------------+
          | Master key length              | 128 bits          |
          | Master salt length             | 96 bits           |
          | Key Derivation Function        | ARIA_128_CTR_PRF  |
          | Default key lifetime (SRTP)    | 2^48 packets      |
          | Default key lifetime (SRTCP)   | 2^31 packets      |
          | Cipher (for SRTP and SRTCP)    | AEAD_ARIA_128_GCM |
          | AEAD authentication tag length | 128 bits          |
          +--------------------------------+-------------------+

                Table 8: The AEAD_ARIA_128_GCM Crypto Suite

          +--------------------------------+-------------------+
          | Parameter                      | Value             |
          +--------------------------------+-------------------+
          | Master key length              | 256 bits          |
          | Master salt length             | 96 bits           |
          | Key Derivation Function        | ARIA_256_CTR_PRF  |
          | Default key lifetime (SRTP)    | 2^48 packets      |
          | Default key lifetime (SRTCP)   | 2^31 packets      |
          | Cipher (for SRTP and SRTCP)    | AEAD_ARIA_256_GCM |
          | AEAD authentication tag length | 128 bits          |
          +--------------------------------+-------------------+

                Table 9: The AEAD_ARIA_256_GCM Crypto Suite





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3.  IANA Considerations

   SDP Security Descriptions [RFC4568] defines SRTP "crypto suites".  In
   order to allow SDP to signal the use of the algorithms defined in
   this document, IANA is requested to add the below crypto suites to
   the "SRTP Crypto Suite Registrations" created by [RFC4568], at time
   of writing located on the following IANA page:
   http://www.iana.org/assignments/sdp-security-descriptions/ .

           srtp-crypto-suite-ext = "ARIA_128_CTR_HMAC_SHA1_80"/
                                   "ARIA_128_CTR_HMAC_SHA1_32"/
                                   "ARIA_192_CTR_HMAC_SHA1_80"/
                                   "ARIA_192_CTR_HMAC_SHA1_32"/
                                   "ARIA_256_CTR_HMAC_SHA1_80"/
                                   "ARIA_256_CTR_HMAC_SHA1_32"/
                                   "AEAD_ARIA_128_GCM"        /
                                   "AEAD_ARIA_256_GCM"        /
                                   srtp-crypto-suite-ext

4.  References

4.1.  Normative References

   [I-D.ietf-avtcore-aria-srtp]
              Kim, W., Lee, J., Park, J., and D. Kwon, "The ARIA
              Algorithm and Its Use with the Secure Real-time Transport
              Protocol(SRTP)", draft-ietf-avtcore-aria-srtp-09 (work in
              progress), November 2015.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997,
              <http://www.rfc-editor.org/info/rfc2119>.

   [RFC4568]  Andreasen, F., Baugher, M., and D. Wing, "Session
              Description Protocol (SDP) Security Descriptions for Media
              Streams", RFC 4568, DOI 10.17487/RFC4568, July 2006,
              <http://www.rfc-editor.org/info/rfc4568>.

4.2.  Informative References

   [ARIAKS]   Korean Agency for Technology and Standards, "128 bit block
              encryption algorithm ARIA - Part 1: General (in Korean)",
              KS X 1213-1:2009, December 2009.

   [ARIAPKCS]
              RSA Laboratories, "Additional PKCS #11 Mechanisms",
              PKCS #11 v2.20 Amendment 3 Revision 1, January 2007.



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   [RFC5794]  Lee, J., Lee, J., Kim, J., Kwon, D., and C. Kim, "A
              Description of the ARIA Encryption Algorithm", RFC 5794,
              DOI 10.17487/RFC5794, March 2010,
              <http://www.rfc-editor.org/info/rfc5794>.

Authors' Addresses

   Woo-Hwan Kim
   National Security Research Institute
   P.O.Box 1, Yuseong
   Daejeon  34188
   Korea

   EMail: whkim5@nsr.re.kr


   Jungkeun Lee
   National Security Research Institute
   P.O.Box 1, Yuseong
   Daejeon  34188
   Korea

   EMail: jklee@nsr.re.kr


   Je Hong Park
   National Security Research Institute
   P.O.Box 1, Yuseong
   Daejeon  34188
   Korea

   EMail: jhpark@nsr.re.kr


   Daesung Kwon
   National Security Research Institute
   P.O.Box 1, Yuseong
   Daejeon  34188
   Korea

   EMail: ds_kwon@nsr.re.kr










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   Dong-Chan Kim
   Kookmin University
   77 Jeongneung-ro, Seongbuk-gu
   Seoul  02707
   Korea

   EMail: dckim@kookmin.ac.kr












































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