<pre>Network Working Group                                   S. Leontiev, Ed.
Request for Comments: 4490                                G. Chudov, Ed.
Category: Standards Track                                     CRYPTO-PRO
                                                                May 2006


               <span class="h1">Using the GOST 28147-89, GOST R 34.11-94,</span>
         <span class="h1">GOST R 34.10-94, and GOST R 34.10-2001 Algorithms with</span>
                   <span class="h1">Cryptographic Message Syntax (CMS)</span>

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) The Internet Society (2006).

Abstract

   This document describes the conventions for using the cryptographic
   algorithms GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and
   GOST R 34.11-94 with the Cryptographic Message Syntax (CMS).  The CMS
   is used for digital signature, digest, authentication, and encryption
   of arbitrary message contents.






















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Table of Contents

   <a href="#section-1">1</a>. Introduction ....................................................<a href="#page-3">3</a>
      <a href="#section-1.1">1.1</a>. Terminology ................................................<a href="#page-3">3</a>
   <a href="#section-2">2</a>. Message Digest Algorithms .......................................<a href="#page-3">3</a>
      <a href="#section-2.1">2.1</a>. Message Digest Algorithm GOST R 34.11-94 ...................<a href="#page-3">3</a>
   <a href="#section-3">3</a>. Signature Algorithms ............................................<a href="#page-4">4</a>
      <a href="#section-3.1">3.1</a>. Signature Algorithm GOST R 34.10-94 ........................<a href="#page-4">4</a>
      <a href="#section-3.2">3.2</a>. Signature Algorithm GOST R 34.10-2001 ......................<a href="#page-5">5</a>
   <a href="#section-4">4</a>. Key Management Algorithms .......................................<a href="#page-5">5</a>
      <a href="#section-4.1">4.1</a>. Key Agreement Algorithms ...................................<a href="#page-6">6</a>
           4.1.1. Key Agreement Algorithms Based on GOST R
                  34.10-94/2001 Public ................................<a href="#page-6">6</a>
      <a href="#section-4.2">4.2</a>. Key Transport Algorithms ...................................<a href="#page-8">8</a>
           4.2.1. Key Transport Algorithm Based on GOST R
                  34.10-94/2001 Public ................................<a href="#page-8">8</a>
   <a href="#section-5">5</a>. Content Encryption Algorithms ...................................<a href="#page-9">9</a>
      <a href="#section-5.1">5.1</a>. Content Encryption Algorithm GOST 28147-89 ................<a href="#page-10">10</a>
   <a href="#section-6">6</a>. MAC Algorithms .................................................<a href="#page-10">10</a>
      <a href="#section-6.1">6.1</a>. HMAC with GOST R 34.11-94 .................................<a href="#page-10">10</a>
   <a href="#section-7">7</a>. Use with S/MIME ................................................<a href="#page-11">11</a>
      <a href="#section-7.1">7.1</a>. Parameter micalg ..........................................<a href="#page-11">11</a>
      <a href="#section-7.2">7.2</a>. Attribute SMIMECapabilities ...............................<a href="#page-11">11</a>
   <a href="#section-8">8</a>. Security Considerations ........................................<a href="#page-12">12</a>
   <a href="#section-9">9</a>. Examples .......................................................<a href="#page-12">12</a>
      <a href="#section-9.1">9.1</a>. Signed Message ............................................<a href="#page-12">12</a>
      <a href="#section-9.2">9.2</a>. Enveloped Message Using Key Agreement .....................<a href="#page-14">14</a>
      <a href="#section-9.3">9.3</a>. Enveloped Message Using Key Transport .....................<a href="#page-17">17</a>
   <a href="#section-10">10</a>. ASN.1 Modules .................................................<a href="#page-19">19</a>
      <a href="#section-10.1">10.1</a>. GostR3410-EncryptionSyntax ...............................<a href="#page-19">19</a>
      <a href="#section-10.2">10.2</a>. GostR3410-94-SignatureSyntax .............................<a href="#page-21">21</a>
      <a href="#section-10.3">10.3</a>. GostR3410-2001-SignatureSyntax ...........................<a href="#page-22">22</a>
   <a href="#section-11">11</a>. Acknowledgements ..............................................<a href="#page-23">23</a>
   <a href="#section-12">12</a>. References ....................................................<a href="#page-24">24</a>
      <a href="#section-12.1">12.1</a>. Normative References .....................................<a href="#page-24">24</a>
      <a href="#section-12.2">12.2</a>. Informative References ...................................<a href="#page-25">25</a>















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<span class="h2"><a class="selflink" id="section-1" href="#section-1">1</a>.  Introduction</span>

   The Cryptographic Message Syntax [<a href="#ref-CMS" title="&quot;Cryptographic Message Syntax (CMS)&quot;">CMS</a>] is used for digital signature,
   digest, authentication, and encryption of arbitrary message contents.
   This companion specification describes the use of cryptographic
   algorithms GOST 28147-89 [<a href="#ref-GOST28147" title="&quot;Cryptographic Protection for Data Processing System&quot;">GOST28147</a>], GOST R 34.10-94 [GOST3431095,
   GOSTR341094], GOST R 34.10-2001 [<a href="#ref-GOST3431004" title="&quot;Information technology. Cryptographic Data Security. Formation and verification processes of (electronic) digital signature based on Asymmetric Cryptographic Algorithm.&quot;">GOST3431004</a>, <a href="#ref-GOSTR341001" title="&quot;Information technology. Cryptographic data security. Signature and verification processes of [electronic] digital signature.&quot;">GOSTR341001</a>], and GOST
   R 34.11-94 [<a href="#ref-GOST3431195" title="&quot;Information technology. Cryptographic Data Security. Cashing function.&quot;">GOST3431195</a>, <a href="#ref-GOSTR341194" title="&quot;Information technology. Cryptographic Data Security. Hashing function.&quot;">GOSTR341194</a>] in CMS, as proposed by the
   CRYPTO-PRO Company for the "Russian Cryptographic Software
   Compatibility Agreement" community.  This document does not describe
   these cryptographic algorithms; they are defined in corresponding
   national standards.

   The CMS values are generated using ASN.1 [<a href="#ref-X.208-88">X.208-88</a>], using BER
   encoding [<a href="#ref-X.209-88">X.209-88</a>].  This document specifies the algorithm
   identifiers for each algorithm, including ASN.1 for object
   identifiers and any associated parameters.

   The fields in the CMS employed by each algorithm are identified.

<span class="h3"><a class="selflink" id="section-1.1" href="#section-1.1">1.1</a>.  Terminology</span>

   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 [<a href="./rfc2119" title="&quot;Key words for use in RFCs to Indicate Requirement Levels&quot;">RFC2119</a>].

<span class="h2"><a class="selflink" id="section-2" href="#section-2">2</a>.  Message Digest Algorithms</span>

   This section specifies the conventions for using the digest algorithm
   GOST R 34.11-94 employed by CMS.

   Digest values are located in the DigestedData digest field and the
   Message Digest authenticated attribute.  In addition, digest values
   are input to signature algorithms.

<span class="h3"><a class="selflink" id="section-2.1" href="#section-2.1">2.1</a>.  Message Digest Algorithm GOST R 34.11-94</span>

   The hash function GOST R 34.11-94 has been developed by "GUBS of
   Federal Agency Government Communication and Information" and "All-
   Russian Scientific and Research Institute of Standardization".  The
   algorithm GOST R 34.11-94 produces a 256-bit hash value of the
   arbitrary finite bit-length input.  This document does not contain
   the full GOST R 34.11-94 specification, which can be found in
   [<a href="#ref-GOSTR341194" title="&quot;Information technology. Cryptographic Data Security. Hashing function.&quot;">GOSTR341194</a>] in Russian.  [<a href="#ref-Schneier95" title="Second Edition">Schneier95</a>], ch. 18.11, p. 454, contains
   a brief technical description in English.






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   The hash algorithm GOST R 34.11-94 has the following identifier:

   id-GostR3411-94 OBJECT IDENTIFIER ::=
         { iso(1) member-body(2) ru(643) rans(2) cryptopro(2)
           gostr3411(9) }

   The AlgorithmIdentifier parameters field MUST be present, and the
   parameters field MUST contain NULL.  Implementations MAY accept the
   GOST R 34.11-94 AlgorithmIdentifiers with absent parameters as well
   as NULL parameters.

   This function is always used with default parameters id-GostR3411-
   94-CryptoProParamSet (see Section 8.2 of [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>]).

   When the Message Digest authenticated attribute is present, the
   DigestedData digest contains a 32-byte digest in little-endian
   representation:

   GostR3411-94-Digest ::= OCTET STRING (SIZE (32))

<span class="h2"><a class="selflink" id="section-3" href="#section-3">3</a>.  Signature Algorithms</span>

   This section specifies the CMS procedures for the GOST R 34.10-94 and
   GOST R 34.10-2001 signature algorithms.

   Signature algorithm identifiers are located in the SignerInfo
   signatureAlgorithm field of SignedData.  Also, signature algorithm
   identifiers are located in the SignerInfo signatureAlgorithm field of
   countersignature attributes.

   Signature values are located in the SignerInfo signature field of
   SignedData.  Also, signature values are located in the SignerInfo
   signature field of countersignature attributes.

<span class="h3"><a class="selflink" id="section-3.1" href="#section-3.1">3.1</a>.  Signature Algorithm GOST R 34.10-94</span>

   GOST R 34.10-94 has been developed by "GUBS of Federal Agency
   Government Communication and Information" and "All-Russian Scientific
   and Research Institute of Standardization".  This signature algorithm
   MUST be used conjointly with the GOST R 34.11-94 message digest
   algorithm.  This document does not contain the full GOST R 34.10-94
   specification, which is fully described in [<a href="#ref-GOSTR341094" title="&quot;Information technology. Cryptographic Data Security. Produce and check procedures of Electronic Digital Signatures based on Asymmetric Cryptographic Algorithm.&quot;">GOSTR341094</a>] in Russian;
   and a brief description in English can be found in [<a href="#ref-Schneier95" title="Second Edition">Schneier95</a>], ch.
   20.3, p. 495.

   The GOST R 34.10-94 signature algorithm has the following public key
   algorithm identifier:




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   id-GostR3410-94-signature OBJECT IDENTIFIER ::= id-GostR3410-94

   id-GostR3410-94 is defined in Section 2.3.1 of [<a href="#ref-CPPK" title="&quot;Using the GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms with the Internet X.509 Public Key Infrastructure Certificate and CRL Profile&quot;">CPPK</a>].

   The signature algorithm GOST R 34.10-94 generates a digital signature
   in the form of two 256-bit numbers, r' and s.  Its octet string
   representation consists of 64 octets, where the first 32 octets
   contain the big-endian representation of s and the second 32 octets
   contain the big-endian representation of r'.

   GostR3410-94-Signature ::= OCTET STRING (SIZE (64))

<span class="h3"><a class="selflink" id="section-3.2" href="#section-3.2">3.2</a>.  Signature Algorithm GOST R 34.10-2001</span>

   GOST R 34.10-2001 has been developed by "GUBS of Federal Agency
   Government Communication and Information" and "All-Russian Scientific
   and Research Institute of Standardization".  This signature algorithm
   MUST be used conjointly with GOST R 34.11-94.  This document does not
   contain the full GOST R 34.10-2001 specification, which is fully
   described in [<a href="#ref-GOSTR341001" title="&quot;Information technology. Cryptographic data security. Signature and verification processes of [electronic] digital signature.&quot;">GOSTR341001</a>].

   The signature algorithm GOST R 34.10-2001 has the following public
   key algorithm identifier:

   id-GostR3410-2001-signature OBJECT IDENTIFIER ::= id-GostR3410-2001

   id-GostR3410-2001 is defined in Section 2.3.2 of [<a href="#ref-CPPK" title="&quot;Using the GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms with the Internet X.509 Public Key Infrastructure Certificate and CRL Profile&quot;">CPPK</a>].

   The signature algorithm GOST R 34.10-2001 generates a digital
   signature in the form of two 256-bit numbers, r and s.  Its octet
   string representation consists of 64 octets, where the first 32
   octets contain the big-endian representation of s and the second 32
   octets contain the big-endian representation of r.

   GostR3410-2001-Signature ::= OCTET STRING (SIZE (64))

<span class="h2"><a class="selflink" id="section-4" href="#section-4">4</a>.  Key Management Algorithms</span>

   This chapter describes the key agreement and key transport
   algorithms, based on the VKO GOST R 34.10-94 and VKO GOST R 34.10-
   2001 key derivation algorithms, and the CryptoPro and GOST 28147-89
   key wrap algorithms, described in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>].  They MUST be used only
   with the content encryption algorithm GOST 28147-89, defined in
   <a href="#section-5">Section 5</a> of this document.







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<span class="h3"><a class="selflink" id="section-4.1" href="#section-4.1">4.1</a>.  Key Agreement Algorithms</span>

   This section specifies the conventions employed by CMS
   implementations that support key agreement using both the VKO GOST R
   34.10-94 and VKO GOST R 34.10-2001 algorithms, described in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>].

   Key agreement algorithm identifiers are located in the EnvelopedData
   RecipientInfos KeyAgreeRecipientInfo keyEncryptionAlgorithm and
   AuthenticatedData RecipientInfos KeyAgreeRecipientInfo
   keyEncryptionAlgorithm fields.

   Wrapped content-encryption keys are located in the EnvelopedData
   RecipientInfos KeyAgreeRecipientInfo RecipientEncryptedKeys
   encryptedKey field.  Wrapped message-authentication keys are located
   in the AuthenticatedData RecipientInfos KeyAgreeRecipientInfo
   RecipientEncryptedKeys encryptedKey field.

<span class="h4"><a class="selflink" id="section-4.1.1" href="#section-4.1.1">4.1.1</a>.  Key Agreement Algorithms Based on GOST R 34.10-94/2001 Public</span>
<span class="h4">        Keys</span>

   The EnvelopedData RecipientInfos KeyAgreeRecipientInfo field is used
   as follows:

      The version MUST be 3.

      The originator MUST be the originatorKey alternative.  The
      originatorKey algorithm field MUST contain the object identifier
      id-GostR3410-94 or id-GostR3410-2001 and corresponding parameters
      (defined in Sections <a href="#section-2.3.1">2.3.1</a>, <a href="#section-2.3.2">2.3.2</a> of [<a href="#ref-CPPK" title="&quot;Using the GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms with the Internet X.509 Public Key Infrastructure Certificate and CRL Profile&quot;">CPPK</a>]).

      The originatorKey publicKey field MUST contain the sender's public
      key.

      keyEncryptionAlgorithm MUST be the id-GostR3410-94-CryptoPro-ESDH
      or the id-GostR3410-2001-CryptoPro-ESDH algorithm identifier,
      depending on the recipient public key algorithm.  The algorithm
      identifier parameter field for these algorithms is
      KeyWrapAlgorithm, and this parameter MUST be present.  The
      KeyWrapAlgorithm denotes the algorithm and parameters used to
      encrypt the content-encryption key with the pairwise key-
      encryption key generated using the VKO GOST R 34.10-94 or the VKO
      GOST R 34.10-2001 key agreement algorithms.

      The algorithm identifiers and parameter syntax is:

        id-GostR3410-94-CryptoPro-ESDH OBJECT IDENTIFIER ::=
            { iso(1) member-body(2) ru(643) rans(2) cryptopro(2)
              gostR3410-94-CryptoPro-ESDH(97) }



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        id-GostR3410-2001-CryptoPro-ESDH OBJECT IDENTIFIER ::=
            { iso(1) member-body(2) ru(643) rans(2) cryptopro(2)
              gostR3410-2001-CryptoPro-ESDH(96) }

        KeyWrapAlgorithm ::= AlgorithmIdentifier

      When keyEncryptionAlgorithm is id-GostR3410-94-CryptoPro-ESDH,
      KeyWrapAlgorithm algorithm MUST be the id-Gost28147-89-CryptoPro-
      KeyWrap algorithm identifier.

        id-Gost28147-89-CryptoPro-KeyWrap OBJECT IDENTIFIER ::=
            { iso(1) member-body(2) ru(643) rans(2) cryptopro(2)
              keyWrap(13) cryptoPro(1) }

      The CryptoPro Key Wrap algorithm is described in Sections <a href="#section-6.3">6.3</a> and
      6.4 of [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>].

      When keyEncryptionAlgorithm is id-GostR3410-2001-CryptoPro-ESDH,
      KeyWrapAlgorithm algorithm MUST be either the id-Gost28147-89-
      CryptoPro-KeyWrap or id-Gost28147-89-None-KeyWrap algorithm
      identifier.

        id-Gost28147-89-None-KeyWrap OBJECT IDENTIFIER ::=
            { iso(1) member-body(2) ru(643) rans(2) cryptopro(2)
              keyWrap(13) none(0) }

      The GOST 28147-89 Key Wrap algorithm is described in Sections <a href="#section-6.1">6.1</a>
      and 6.2 of [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>].

      KeyWrapAlgorithm algorithm parameters MUST be present.  The syntax
      for KeyWrapAlgorithm algorithm parameters is

        Gost28147-89-KeyWrapParameters ::=
          SEQUENCE {
              encryptionParamSet Gost28147-89-ParamSet,
              ukm                OCTET STRING (SIZE (8)) OPTIONAL
          }
          Gost28147-89-ParamSet ::= OBJECT IDENTIFIER

      Gost28147-89-KeyWrapParameters ukm MUST be absent.

      KeyAgreeRecipientInfo ukm MUST be present and contain eight
      octets.

      encryptedKey MUST encapsulate Gost28147-89-EncryptedKey, where
      maskKey MUST be absent.





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      Gost28147-89-EncryptedKey ::=   SEQUENCE {
        encryptedKey         Gost28147-89-Key,
        maskKey              [0] IMPLICIT Gost28147-89-Key
                                 OPTIONAL,
        macKey               Gost28147-89-MAC
      }

   Using the secret key corresponding to the originatorKey publicKey and
   the recipient's public key, the algorithm VKO GOST R 34.10-94 or VKO
   GOST R 34.10-2001 (described in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>]) is applied to produce the
   KEK.

   Then the key wrap algorithm, specified by KeyWrapAlgorithm, is
   applied to produce CEK_ENC, CEK_MAC, and UKM.  Gost28147-89-
   KeyWrapParameters encryptionParamSet is used for all encryption
   operations.

   The resulting encrypted key (CEK_ENC) is placed in the Gost28147-89-
   EncryptedKey encryptedKey field, its mac (CEK_MAC) is placed in the
   Gost28147-89-EncryptedKey macKey field, and UKM is placed in the
   KeyAgreeRecipientInfo ukm field.

<span class="h3"><a class="selflink" id="section-4.2" href="#section-4.2">4.2</a>.  Key Transport Algorithms</span>

   This section specifies the conventions employed by CMS
   implementations that support key transport using both the VKO GOST R
   34.10-94 and VKO GOST R 34.10-2001 algorithms, described in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>].

   Key transport algorithm identifiers are located in the EnvelopedData
   RecipientInfos KeyTransRecipientInfo keyEncryptionAlgorithm field.

   Key transport encrypted content-encryption keys are located in the
   EnvelopedData RecipientInfos KeyTransRecipientInfo encryptedKey
   field.

<span class="h4"><a class="selflink" id="section-4.2.1" href="#section-4.2.1">4.2.1</a>.  Key Transport Algorithm Based on GOST R 34.10-94/2001 Public</span>
<span class="h4">        Keys</span>

   The EnvelopedData RecipientInfos KeyTransRecipientInfo field is used
   as follows:

      The version MUST be 0 or 3.

      keyEncryptionAlgorithm and parameters MUST be identical to the
      recipient public key algorithm and parameters.






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      encryptedKey encapsulates GostR3410-KeyTransport, which consists
      of encrypted content-encryption key, its MAC, GOST 28147-89
      algorithm parameters used for key encryption, the sender's
      ephemeral public key, and UKM (UserKeyingMaterial; see [<a href="#ref-CMS" title="&quot;Cryptographic Message Syntax (CMS)&quot;">CMS</a>],
      Section 10.2.6).

      transportParameters MUST be present.

      ephemeralPublicKey MUST be present and its parameters, if present,
      MUST be equal to the recipient public key parameters;

      GostR3410-KeyTransport ::= SEQUENCE {
        sessionEncryptedKey   Gost28147-89-EncryptedKey,
        transportParameters
          [0] IMPLICIT GostR3410-TransportParameters OPTIONAL
      }

      GostR3410-TransportParameters ::= SEQUENCE {
        encryptionParamSet   OBJECT IDENTIFIER,
        ephemeralPublicKey   [0] IMPLICIT SubjectPublicKeyInfo OPTIONAL,
        ukm                  OCTET STRING
      }

   Using the secret key corresponding to the GostR3410-
   TransportParameters ephemeralPublicKey and the recipient's public
   key, the algorithm VKO GOST R 34.10-94 or VKO GOST R 34.10-2001
   (described in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>]) is applied to produce the KEK.

   Then the CryptoPro key wrap algorithm is applied to produce CEK_ENC,
   CEK_MAC, and UKM.  GostR3410-TransportParameters encryptionParamSet
   is used for all encryption operations.

   The resulting encrypted key (CEK_ENC) is placed in the Gost28147-89-
   EncryptedKey encryptedKey field, its mac (CEK_MAC) is placed in the
   Gost28147-89-EncryptedKey macKey field, and UKM is placed in the
   GostR3410-TransportParameters ukm field.

<span class="h2"><a class="selflink" id="section-5" href="#section-5">5</a>.  Content Encryption Algorithms</span>

   This section specifies the conventions employed by CMS
   implementations that support content encryption using GOST 28147-89.

   Content encryption algorithm identifiers are located in the
   EnvelopedData EncryptedContentInfo contentEncryptionAlgorithm and the
   EncryptedData EncryptedContentInfo contentEncryptionAlgorithm fields.






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<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-10" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


   Content encryption algorithms are used to encipher the content
   located in the EnvelopedData EncryptedContentInfo encryptedContent
   field and the EncryptedData EncryptedContentInfo encryptedContent
   field.

<span class="h3"><a class="selflink" id="section-5.1" href="#section-5.1">5.1</a>.  Content Encryption Algorithm GOST 28147-89</span>

   This section specifies the use of GOST 28147-89 algorithm for data
   encipherment.

   GOST 28147-89 is fully described in [<a href="#ref-GOST28147" title="&quot;Cryptographic Protection for Data Processing System&quot;">GOST28147</a>] (in Russian).

   This document specifies the following object identifier (OID) for
   this algorithm:

   id-Gost28147-89 OBJECT IDENTIFIER ::=
         { iso(1) member-body(2) ru(643) rans(2) cryptopro(2)
           gost28147-89(21) }

   Algorithm parameters MUST be present and have the following
   structure:

     Gost28147-89-Parameters ::=
       SEQUENCE {
         iv                   Gost28147-89-IV,
         encryptionParamSet   OBJECT IDENTIFIER
        }

     Gost28147-89-IV ::= OCTET STRING (SIZE (8))

   encryptionParamSet specifies the set of corresponding Gost28147-89-
   ParamSetParameters (see Section 8.1 of [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>])

<span class="h2"><a class="selflink" id="section-6" href="#section-6">6</a>.  MAC Algorithms</span>

   This section specifies the conventions employed by CMS
   implementations that support the message authentication code (MAC)
   based on GOST R 34.11-94.

   MAC algorithm identifiers are located in the AuthenticatedData
   macAlgorithm field.

   MAC values are located in the AuthenticatedData mac field.

<span class="h3"><a class="selflink" id="section-6.1" href="#section-6.1">6.1</a>.  HMAC with GOST R 34.11-94</span>

   HMAC_GOSTR3411 (K,text) function is based on hash function GOST R
   34.11-94, as defined in Section 3 of [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>].



<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 10]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-11" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


   This document specifies the following OID for this algorithm:

   id-HMACGostR3411-94 OBJECT IDENTIFIER ::=
         { iso(1) member-body(2) ru(643) rans(2) cryptopro(2)
           hmacgostr3411(10) }

   This algorithm has the same parameters as the GOST R 34.11-94 digest
   algorithm and uses the same OIDs for their identification (see
   [<a href="#ref-CPPK" title="&quot;Using the GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms with the Internet X.509 Public Key Infrastructure Certificate and CRL Profile&quot;">CPPK</a>]).

<span class="h2"><a class="selflink" id="section-7" href="#section-7">7</a>.  Use with S/MIME</span>

   This section defines the use of the algorithms defined in this
   document with S/MIME [<a href="./rfc3851" title="&quot;Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.1 Message Specification&quot;">RFC3851</a>].

<span class="h3"><a class="selflink" id="section-7.1" href="#section-7.1">7.1</a>.  Parameter micalg</span>

   When using the algorithms defined in this document, micalg parameter
   SHOULD be set to "gostr3411-94"; otherwise, it MUST be set to
   "unknown".

<span class="h3"><a class="selflink" id="section-7.2" href="#section-7.2">7.2</a>.  Attribute SMIMECapabilities</span>

   The SMIMECapability value that indicates support for the GOST R
   34.11-94 digest algorithm is the SEQUENCE with the capabilityID field
   containing the object identifier id-GostR3411-94 and no parameters.
   The DER encoding is:

     30 08 06 06  2A 85 03 02  02 09

   The SMIMECapability value that indicates support for the GOST
   28147-89 encryption algorithm is the SEQUENCE with the capabilityID
   field containing the object identifier id-Gost28147-89 and no
   parameters.  The DER encoding is:

     30 08 06 06  2A 85 03 02  02 15

   If the sender wishes to indicate support for a specific parameter
   set, SMIMECapability parameters MUST contain the Gost28147-89-
   Parameters structure.  Recipients MUST ignore the Gost28147-89-
   Parameters iv field and assume that the sender supports the
   parameters specified in the Gost28147-89-Parameters
   encryptionParamSet field.

   The DER encoding for the SMIMECapability, indicating support for GOST
   28147-89 with id-Gost28147-89-CryptoPro-A-ParamSet (see [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>]),
   is:




<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 11]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-12" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


     30 1D 06 06  2A 85 03 02  02 15 30 13  04 08 00 00
     00 00 00 00  00 00 06 07  2A 85 03 02  02 1F 01

<span class="h2"><a class="selflink" id="section-8" href="#section-8">8</a>.  Security Considerations</span>

   Conforming applications MUST use unique values for ukm and iv.
   Recipients MAY verify that ukm and iv, specified by the sender, are
   unique.

   It is RECOMMENDED that software applications verify that signature
   values, subject public keys, and algorithm parameters conform to
   [<a href="#ref-GOSTR341001" title="&quot;Information technology. Cryptographic data security. Signature and verification processes of [electronic] digital signature.&quot;">GOSTR341001</a>] and [<a href="#ref-GOSTR341094" title="&quot;Information technology. Cryptographic Data Security. Produce and check procedures of Electronic Digital Signatures based on Asymmetric Cryptographic Algorithm.&quot;">GOSTR341094</a>] standards prior to their use.

   Cryptographic algorithm parameters affect algorithm strength.  The
   use of parameters not listed in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>] is NOT RECOMMENDED (see the
   Security Considerations section of [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>]).

   Use of the same key for signature and key derivation is NOT
   RECOMMENDED.  When signed CMS documents are used as an analogue to a
   manual signing, in the context of Russian Federal Electronic Digital
   Signature Law [<a href="#ref-RFEDSL" title="&quot;Russian Federal Electronic Digital Signature Law&quot;">RFEDSL</a>], signer certificate MUST contain the keyUsage
   extension, it MUST be critical, and keyUsage MUST NOT include
   keyEncipherment or keyAgreement (see [<a href="#ref-PROFILE" title="&quot;Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile&quot;">PROFILE</a>], Section 4.2.1.3).
   Application SHOULD be submitted for examination by an authorized
   agency in appropriate levels of target_of_evaluation (TOE), according
   to [<a href="#ref-RFEDSL" title="&quot;Russian Federal Electronic Digital Signature Law&quot;">RFEDSL</a>], [<a href="#ref-RFLLIC" title="&quot;Russian Federal Law on Licensing of Selected Activity Categories&quot;">RFLLIC</a>], and [<a href="#ref-CRYPTOLIC" title="&quot;Russian Federal Government Regulation on Licensing of Selected Activity Categories in Cryptography Area&quot;">CRYPTOLIC</a>].

<span class="h2"><a class="selflink" id="section-9" href="#section-9">9</a>.  Examples</span>

   Examples here are stored in the same format as the examples in
   [<a href="./rfc4134" title="&quot;Examples of S/MIME Messages&quot;">RFC4134</a>] and can be extracted using the same program.

   If you want to extract without the program, copy all the lines
   between the "|&gt;" and "|&lt;" markers, remove any page breaks, and remove
   the "|" in the first column of each line.  The result is a valid
   Base64 blob that can be processed by any Base64 decoder.

<span class="h3"><a class="selflink" id="section-9.1" href="#section-9.1">9.1</a>.  Signed Message</span>

   This message is signed using the sample certificate from Section 4.2
   of [<a href="#ref-CPPK" title="&quot;Using the GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms with the Internet X.509 Public Key Infrastructure Certificate and CRL Profile&quot;">CPPK</a>].  The public key (x,y) from the same section can be used to
   verify the message signature.

   0  296: SEQUENCE {
   4    9:  OBJECT IDENTIFIER signedData
  15  281:  [0] {
  19  277:   SEQUENCE {
  23    1:    INTEGER 1



<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 12]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-13" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


  26   12:    SET {
  28   10:     SEQUENCE {
  30    6:      OBJECT IDENTIFIER id-GostR3411-94
  38    0:      NULL
         :      }
         :     }
  40   27:    SEQUENCE {
  42    9:     OBJECT IDENTIFIER data
  53   14:     [0] {
  55   12:      OCTET STRING 73 61 6D 70 6C 65 20 74 65 78 74 0A
         :      }
         :     }
  69  228:    SET {
  72  225:     SEQUENCE {
  75    1:      INTEGER 1
  78  129:      SEQUENCE {
  81  109:       SEQUENCE {
  83   31:        SET {
  85   29:         SEQUENCE {
  87    3:          OBJECT IDENTIFIER commonName
  92   22:          UTF8String 'GostR3410-2001 example'
         :          }
         :         }
 116   18:        SET {
 118   16:         SEQUENCE {
 120    3:          OBJECT IDENTIFIER organizationName
 125    9:          UTF8String 'CryptoPro'
         :          }
         :         }
 136   11:        SET {
 138    9:         SEQUENCE {
 140    3:          OBJECT IDENTIFIER countryName
 145    2:          PrintableString 'RU'
         :          }
         :         }
 149   41:        SET {
 151   39:         SEQUENCE {
 153    9:          OBJECT IDENTIFIER emailAddress
 164   26:          IA5String 'GostR3410-2001@example.com'
         :          }
         :         }
         :        }
 192   16:       INTEGER
         :        2B F5 C6 1E C2 11 BD 17 C7 DC D4 62 66 B4 2E 21
         :       }
 210   10:      SEQUENCE {
 212    6:       OBJECT IDENTIFIER id-GostR3411-94
 220    0:       NULL



<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 13]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-14" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


         :       }
 222   10:      SEQUENCE {
 224    6:       OBJECT IDENTIFIER id-GostR3410-2001
 232    0:       NULL
         :       }
 234   64:      OCTET STRING
         :       C0 C3 42 D9 3F 8F FE 25 11 11 88 77 BF 89 C3 DB
         :       83 42 04 D6 20 F9 68 2A 99 F6 FE 30 3B E4 F4 C8
         :       F8 D5 B4 DA FB E1 C6 91 67 34 1F BC A6 7A 0D 12
         :       7B FD 10 25 C6 51 DB 8D B2 F4 8C 71 7E ED 72 A9
         :      }
         :     }
         :    }
         :   }
         :  }

|&gt;GostR3410-2001-signed.bin
|MIIBKAYJKoZIhvcNAQcCoIIBGTCCARUCAQExDDAKBgYqhQMCAgkFADAbBgkqhkiG
|9w0BBwGgDgQMc2FtcGxlIHRleHQKMYHkMIHhAgEBMIGBMG0xHzAdBgNVBAMMFkdv
|c3RSMzQxMC0yMDAxIGV4YW1wbGUxEjAQBgNVBAoMCUNyeXB0b1BybzELMAkGA1UE
|BhMCUlUxKTAnBgkqhkiG9w0BCQEWGkdvc3RSMzQxMC0yMDAxQGV4YW1wbGUuY29t
|AhAr9cYewhG9F8fc1GJmtC4hMAoGBiqFAwICCQUAMAoGBiqFAwICEwUABEDAw0LZ
|P4/+JRERiHe/icPbg0IE1iD5aCqZ9v4wO+T0yPjVtNr74caRZzQfvKZ6DRJ7/RAl
|xlHbjbL0jHF+7XKp
|&lt;GostR3410-2001-signed.bin

<span class="h3"><a class="selflink" id="section-9.2" href="#section-9.2">9.2</a>.  Enveloped Message Using Key Agreement</span>

   This message is encrypted using the sample certificate from <a href="#section-4.2">Section</a>
   <a href="#section-4.2">4.2</a> of [<a href="#ref-CPPK" title="&quot;Using the GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms with the Internet X.509 Public Key Infrastructure Certificate and CRL Profile&quot;">CPPK</a>] as a recipient certificate.  The private key 'd' from
   the same section can be used to decrypt this message.

   0  420: SEQUENCE {
   4    9:  OBJECT IDENTIFIER envelopedData
  15  405:  [0] {
  19  401:   SEQUENCE {
  23    1:    INTEGER 2
  26  336:    SET {
  30  332:     [1] {
  34    1:      INTEGER 3
  37  101:      [0] {
  39   99:       [1] {
  41   28:        SEQUENCE {
  43    6:         OBJECT IDENTIFIER id-GostR3410-2001
  51   18:         SEQUENCE {
  53    7:          OBJECT IDENTIFIER
         :           id-GostR3410-2001-CryptoPro-XchA-ParamSet
  62    7:          OBJECT IDENTIFIER



<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 14]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-15" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


         :           id-GostR3411-94-CryptoProParamSet
         :          }
         :         }
  71   67:        BIT STRING, encapsulates {
  74   64:         OCTET STRING
         :          B3 55 39 F4 67 81 97 2B A5 C4 D9 84 1F 27 FB 81
         :          ED 08 32 E6 9A D4 F2 00 78 B8 FF 83 64 EA D2 1D
         :          B0 78 3C 7D FE 03 C1 F4 06 E4 3B CC 16 B9 C5 F6
         :          F6 19 37 1C 17 B8 A0 AA C7 D1 A1 94 B3 A5 36 20
         :         }
         :        }
         :       }
 140   10:      [1] {
 142    8:       OCTET STRING 2F F0 F6 D1 86 4B 32 8A
         :       }
 152   30:      SEQUENCE {
 154    6:       OBJECT IDENTIFIER id-GostR3410-2001-CryptoPro-ESDH
 162   20:       SEQUENCE {
 164    7:        OBJECT IDENTIFIER id-Gost28147-89-None-KeyWrap
 173    9:        SEQUENCE {
 175    7:         OBJECT IDENTIFIER
         :          id-Gost28147-89-CryptoPro-A-ParamSet
         :         }
         :        }
         :       }
 184  179:      SEQUENCE {
 187  176:       SEQUENCE {
 190  129:        SEQUENCE {
 193  109:         SEQUENCE {
 195   31:          SET {
 197   29:           SEQUENCE {
 199    3:            OBJECT IDENTIFIER commonName
 204   22:            UTF8String 'GostR3410-2001 example'
         :            }
         :           }
 228   18:          SET {
 230   16:           SEQUENCE {
 232    3:            OBJECT IDENTIFIER organizationName
 237    9:            UTF8String 'CryptoPro'
         :            }
         :           }
 248   11:          SET {
 250    9:           SEQUENCE {
 252    3:            OBJECT IDENTIFIER countryName
 257    2:            PrintableString 'RU'
         :            }
         :           }
 261   41:          SET {



<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 15]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-16" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


 263   39:           SEQUENCE {
 265    9:            OBJECT IDENTIFIER emailAddress
 276   26:            IA5String 'GostR3410-2001@example.com'
         :            }
         :           }
         :          }
 304   16:         INTEGER
         :          2B F5 C6 1E C2 11 BD 17 C7 DC D4 62 66 B4 2E 21
         :         }
 322   42:        OCTET STRING, encapsulates {
 324   40:         SEQUENCE {
 326   32:          OCTET STRING
         :           16 A3 1C E7 CE 4E E9 0D F1 EC 74 69 04 68 1E C7
         :           9F 3A ED B8 3B 1F 1D 4A 7E F9 A5 D9 CB 19 D5 E8
 360    4:          OCTET STRING
         :           93 FD 86 7E
         :          }
         :         }
         :        }
         :       }
         :      }
         :     }
 366   56:    SEQUENCE {
 368    9:     OBJECT IDENTIFIER data
 379   29:     SEQUENCE {
 381    6:      OBJECT IDENTIFIER id-Gost28147-89
 389   19:      SEQUENCE {
 391    8:       OCTET STRING B7 35 E1 7A 07 35 A2 1D
 401    7:       OBJECT IDENTIFIER id-Gost28147-89-CryptoPro-A-ParamSet
         :       }
         :      }
 410   12:     [0] 39 B1 8A F4 BF A9 E2 65 25 B6 55 C9
         :     }
         :    }
         :   }
         :  }

|&gt;GostR3410-2001-keyagree.bin
|MIIBpAYJKoZIhvcNAQcDoIIBlTCCAZECAQIxggFQoYIBTAIBA6BloWMwHAYGKoUD
|AgITMBIGByqFAwICJAAGByqFAwICHgEDQwAEQLNVOfRngZcrpcTZhB8n+4HtCDLm
|mtTyAHi4/4Nk6tIdsHg8ff4DwfQG5DvMFrnF9vYZNxwXuKCqx9GhlLOlNiChCgQI
|L/D20YZLMoowHgYGKoUDAgJgMBQGByqFAwICDQAwCQYHKoUDAgIfATCBszCBsDCB
|gTBtMR8wHQYDVQQDDBZHb3N0UjM0MTAtMjAwMSBleGFtcGxlMRIwEAYDVQQKDAlD
|cnlwdG9Qcm8xCzAJBgNVBAYTAlJVMSkwJwYJKoZIhvcNAQkBFhpHb3N0UjM0MTAt
|MjAwMUBleGFtcGxlLmNvbQIQK/XGHsIRvRfH3NRiZrQuIQQqMCgEIBajHOfOTukN
|8ex0aQRoHsefOu24Ox8dSn75pdnLGdXoBAST/YZ+MDgGCSqGSIb3DQEHATAdBgYq
|hQMCAhUwEwQItzXhegc1oh0GByqFAwICHwGADDmxivS/qeJlJbZVyQ==
|&lt;GostR3410-2001-keyagree.bin



<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 16]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-17" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


<span class="h3"><a class="selflink" id="section-9.3" href="#section-9.3">9.3</a>.  Enveloped Message Using Key Transport</span>

   This message is encrypted using the sample certificate from <a href="#section-4.2">Section</a>
   <a href="#section-4.2">4.2</a> of [<a href="#ref-CPPK" title="&quot;Using the GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms with the Internet X.509 Public Key Infrastructure Certificate and CRL Profile&quot;">CPPK</a>] as a recipient certificate.  The private key 'd' from
   the same section can be used to decrypt this message.

   0  423: SEQUENCE {
   4    9:  OBJECT IDENTIFIER envelopedData
  15  408:  [0] {
  19  404:   SEQUENCE {
  23    1:    INTEGER 0
  26  339:    SET {
  30  335:     SEQUENCE {
  34    1:      INTEGER 0
  37  129:      SEQUENCE {
  40  109:       SEQUENCE {
  42   31:        SET {
  44   29:         SEQUENCE {
  46    3:          OBJECT IDENTIFIER commonName
  51   22:          UTF8String 'GostR3410-2001 example'
         :          }
         :         }
  75   18:        SET {
  77   16:         SEQUENCE {
  79    3:          OBJECT IDENTIFIER organizationName
  84    9:          UTF8String 'CryptoPro'
         :          }
         :         }
  95   11:        SET {
  97    9:         SEQUENCE {
  99    3:          OBJECT IDENTIFIER countryName
 104    2:          PrintableString 'RU'
         :          }
         :         }
 108   41:        SET {
 110   39:         SEQUENCE {
 112    9:          OBJECT IDENTIFIER emailAddress
 123   26:          IA5String 'GostR3410-2001@example.com'
         :          }
         :         }
         :        }
 151   16:       INTEGER
         :        2B F5 C6 1E C2 11 BD 17 C7 DC D4 62 66 B4 2E 21
         :       }
 169   28:      SEQUENCE {
 171    6:       OBJECT IDENTIFIER id-GostR3410-2001
 179   18:       SEQUENCE {
 181    7:        OBJECT IDENTIFIER



<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 17]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-18" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


         :         id-GostR3410-2001-CryptoPro-XchA-ParamSet
 190    7:        OBJECT IDENTIFIER
         :         id-GostR3411-94-CryptoProParamSet
         :        }
         :       }
 199  167:      OCTET STRING, encapsulates {
 202  164:       SEQUENCE {
 205   40:        SEQUENCE {
 207   32:         OCTET STRING
         :          6A 2F A8 21 06 95 68 9F 9F E4 47 AA 9E CB 61 15
         :          2B 7E 41 60 BC 5D 8D FB F5 3D 28 1B 18 9A F9 75
 241    4:         OCTET STRING
         :          36 6D 98 B7
         :         }
 247  120:        [0] {
 249    7:         OBJECT IDENTIFIER
         :          id-Gost28147-89-CryptoPro-A-ParamSet
 258   99:         [0] {
 260   28:          SEQUENCE {
 262    6:           OBJECT IDENTIFIER id-GostR3410-2001
 270   18:           SEQUENCE {
 272    7:            OBJECT IDENTIFIER
         :             id-GostR3410-2001-CryptoPro-XchA-ParamSet
 281    7:            OBJECT IDENTIFIER
         :             id-GostR3411-94-CryptoProParamSet
         :            }
         :           }
 290   67:          BIT STRING encapsulates {
 293   64:           OCTET STRING
         :            4D 2B 2F 33 90 E6 DC A3 DD 55 2A CD DF E0 EF FB
         :            31 F7 73 7E 4E FF BF 78 89 8A 2B C3 CD 31 94 04
         :            4B 0E 60 48 96 1F DB C7 5D 12 6F DA B2 40 8A 77
         :            B5 BD EA F2 EC 34 CB 23 9F 9B 8B DD 9E 12 C0 F6
         :           }
         :          }
 359    8:         OCTET STRING
         :          97 95 E3 2C 2B AD 2B 0C
         :         }
         :        }
         :       }
         :      }
         :     }
 369   56:    SEQUENCE {
 371    9:     OBJECT IDENTIFIER data
 382   29:     SEQUENCE {
 384    6:      OBJECT IDENTIFIER id-Gost28147-89
 392   19:      SEQUENCE {
 394    8:       OCTET STRING BC 10 8B 1F 0B FF 34 29



<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 18]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-19" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


 404    7:       OBJECT IDENTIFIER id-Gost28147-89-CryptoPro-A-ParamSet
         :       }
         :      }
 413   12:     [0] AA 8E 72 1D EE 4F B3 2E E3 0F A1 37
         :     }
         :    }
         :   }
         :  }

|&gt;GostR3410-2001-keytrans.bin
|MIIBpwYJKoZIhvcNAQcDoIIBmDCCAZQCAQAxggFTMIIBTwIBADCBgTBtMR8wHQYD
|VQQDDBZHb3N0UjM0MTAtMjAwMSBleGFtcGxlMRIwEAYDVQQKDAlDcnlwdG9Qcm8x
|CzAJBgNVBAYTAlJVMSkwJwYJKoZIhvcNAQkBFhpHb3N0UjM0MTAtMjAwMUBleGFt
|cGxlLmNvbQIQK/XGHsIRvRfH3NRiZrQuITAcBgYqhQMCAhMwEgYHKoUDAgIkAAYH
|KoUDAgIeAQSBpzCBpDAoBCBqL6ghBpVon5/kR6qey2EVK35BYLxdjfv1PSgbGJr5
|dQQENm2Yt6B4BgcqhQMCAh8BoGMwHAYGKoUDAgITMBIGByqFAwICJAAGByqFAwIC
|HgEDQwAEQE0rLzOQ5tyj3VUqzd/g7/sx93N+Tv+/eImKK8PNMZQESw5gSJYf28dd
|Em/askCKd7W96vLsNMsjn5uL3Z4SwPYECJeV4ywrrSsMMDgGCSqGSIb3DQEHATAd
|BgYqhQMCAhUwEwQIvBCLHwv/NCkGByqFAwICHwGADKqOch3uT7Mu4w+hNw==
|&lt;GostR3410-2001-keytrans.bin

<span class="h2"><a class="selflink" id="section-10" href="#section-10">10</a>.  ASN.1 Modules</span>

   Additional ASN.1 modules, referenced here, can be found in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>].

<span class="h3"><a class="selflink" id="section-10.1" href="#section-10.1">10.1</a>.  GostR3410-EncryptionSyntax</span>

GostR3410-EncryptionSyntax
    { iso(1) member-body(2) ru(643) rans(2) cryptopro(2)
      other(1) modules(1) gostR3410-EncryptionSyntax(5) 2 }
DEFINITIONS ::=
BEGIN
-- EXPORTS All --
-- The types and values defined in this module are exported for
-- use in the other ASN.1 modules contained within the Russian
-- Cryptography "GOST" &amp; "GOST R" Specifications, and for the use
-- of other applications which will use them to access Russian
-- Cryptography services.  Other applications may use them for
-- their own purposes, but this will not constrain extensions and
-- modifications needed to maintain or improve the Russian
-- Cryptography service.
    IMPORTS
        id-CryptoPro-algorithms,
        gost28147-89-EncryptionSyntax,
        gostR3410-94-PKISyntax,
        gostR3410-2001-PKISyntax,
        ALGORITHM-IDENTIFIER,
        cryptographic-Gost-Useful-Definitions



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<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-20" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


        FROM Cryptographic-Gost-Useful-Definitions -- in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>]
            { iso(1) member-body(2) ru(643) rans(2)
              cryptopro(2) other(1) modules(1)
              cryptographic-Gost-Useful-Definitions(0) 1 }
        id-GostR3410-94
        FROM GostR3410-94-PKISyntax -- in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>]
            gostR3410-94-PKISyntax
        id-GostR3410-2001
        FROM GostR3410-2001-PKISyntax -- in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>]
            gostR3410-2001-PKISyntax
        Gost28147-89-ParamSet,
        Gost28147-89-EncryptedKey
        FROM Gost28147-89-EncryptionSyntax -- in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>]
             gost28147-89-EncryptionSyntax
        SubjectPublicKeyInfo
        FROM PKIX1Explicit88 {iso(1) identified-organization(3)
        dod(6) internet(1) security(5) mechanisms(5) pkix(7)
        id-mod(0) id-pkix1-explicit-88(1)}
    ;
  -- CMS/PKCS#7 key agreement algorithms &amp; parameters
    Gost28147-89-KeyWrapParameters ::=
      SEQUENCE {
        encryptionParamSet Gost28147-89-ParamSet,
        ukm                OCTET STRING (SIZE (8)) OPTIONAL
      }
    id-Gost28147-89-CryptoPro-KeyWrap OBJECT IDENTIFIER ::=
      { id-CryptoPro-algorithms keyWrap(13) cryptoPro(1) }
    id-Gost28147-89-None-KeyWrap OBJECT IDENTIFIER ::=
      { id-CryptoPro-algorithms keyWrap(13) none(0) }
    Gost28147-89-KeyWrapAlgorithms  ALGORITHM-IDENTIFIER ::= {
      { Gost28147-89-KeyWrapParameters IDENTIFIED BY
        id-Gost28147-89-CryptoPro-KeyWrap } |
      { Gost28147-89-KeyWrapParameters IDENTIFIED BY
        id-Gost28147-89-None-KeyWrap }
    }
    id-GostR3410-2001-CryptoPro-ESDH OBJECT IDENTIFIER ::=
      { id-CryptoPro-algorithms
        gostR3410-2001-CryptoPro-ESDH(96) }
    id-GostR3410-94-CryptoPro-ESDH OBJECT IDENTIFIER ::=
      { id-CryptoPro-algorithms
        gostR3410-94-CryptoPro-ESDH(97) }
  -- CMS/PKCS#7 key transport algorithms &amp; parameters
    -- OID for CMS/PKCS#7 Key transport is id-GostR3410-94 from
    --      GostR3410-94-PKISyntax or id-GostR3410-2001 from
    --      GostR3410-2001-PKISyntax
    -- Algorithms for CMS/PKCS#7 Key transport are
    --      GostR3410-94-PublicKeyAlgorithms from
    --      GostR3410-94-PKISyntax or



<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 20]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-21" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


    --      GostR3410-2001-PublicKeyAlgorithms from
    --      GostR3410-2001-PKISyntax
    -- SMIMECapability for CMS/PKCS#7 Key transport are
    --      id-GostR3410-94 from GostR3410-94-PKISyntax or
    --      id-GostR3410-2001 from GostR3410-2001-PKISyntax
    id-GostR3410-94-KeyTransportSMIMECapability
        OBJECT IDENTIFIER ::= id-GostR3410-94
    id-GostR3410-2001-KeyTransportSMIMECapability
        OBJECT IDENTIFIER ::= id-GostR3410-2001
    GostR3410-KeyTransport ::=
        SEQUENCE {
            sessionEncryptedKey Gost28147-89-EncryptedKey,
            transportParameters [0]
                IMPLICIT GostR3410-TransportParameters OPTIONAL
        }
    GostR3410-TransportParameters ::=
        SEQUENCE {
            encryptionParamSet Gost28147-89-ParamSet,
            ephemeralPublicKey [0]
                IMPLICIT SubjectPublicKeyInfo OPTIONAL,
            ukm                OCTET STRING ( SIZE(8) )
        }
END -- GostR3410-EncryptionSyntax

<span class="h3"><a class="selflink" id="section-10.2" href="#section-10.2">10.2</a>.  GostR3410-94-SignatureSyntax</span>

GostR3410-94-SignatureSyntax
    { iso(1) member-body(2) ru(643) rans(2) cryptopro(2)
      other(1) modules(1) gostR3410-94-SignatureSyntax(3) 1 }
DEFINITIONS ::=
BEGIN
-- EXPORTS All --
-- The types and values defined in this module are exported for
-- use in the other ASN.1 modules contained within the Russian
-- Cryptography "GOST" &amp; "GOST R" Specifications, and for the use
-- of other applications which will use them to access Russian
-- Cryptography services.  Other applications may use them for
-- their own purposes, but this will not constrain extensions and
-- modifications needed to maintain or improve the Russian
-- Cryptography service.
    IMPORTS
        gostR3410-94-PKISyntax, ALGORITHM-IDENTIFIER,
        cryptographic-Gost-Useful-Definitions
        FROM Cryptographic-Gost-Useful-Definitions -- in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>]
            { iso(1) member-body(2) ru(643) rans(2)
              cryptopro(2) other(1) modules(1)
              cryptographic-Gost-Useful-Definitions(0) 1 }
        id-GostR3410-94,



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<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


        GostR3410-94-PublicKeyParameters
        FROM GostR3410-94-PKISyntax -- in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>]
            gostR3410-94-PKISyntax
    ;
  -- GOST R 34.10-94 signature data type
    GostR3410-94-Signature ::=
        OCTET STRING (SIZE (64))
  -- GOST R 34.10-94 signature algorithm &amp; parameters
    GostR3410-94-CMSSignatureAlgorithms  ALGORITHM-IDENTIFIER ::= {
        { GostR3410-94-PublicKeyParameters IDENTIFIED BY
                        id-GostR3410-94 }
    }

END -- GostR3410-94-SignatureSyntax

<span class="h3"><a class="selflink" id="section-10.3" href="#section-10.3">10.3</a>.  GostR3410-2001-SignatureSyntax</span>

GostR3410-2001-SignatureSyntax
    { iso(1) member-body(2) ru(643) rans(2) cryptopro(2)
      other(1) modules(1) gostR3410-2001-SignatureSyntax(10) 1 }
DEFINITIONS ::=
BEGIN
-- EXPORTS All --
-- The types and values defined in this module are exported for
-- use in the other ASN.1 modules contained within the Russian
-- Cryptography "GOST" &amp; "GOST R" Specifications, and for the use
-- of other applications which will use them to access Russian
-- Cryptography services. Other applications may use them for
-- their own purposes, but this will not constrain extensions and
-- modifications needed to maintain or improve the Russian
-- Cryptography service.
    IMPORTS
        gostR3410-2001-PKISyntax, ALGORITHM-IDENTIFIER,
        cryptographic-Gost-Useful-Definitions
        FROM Cryptographic-Gost-Useful-Definitions -- in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>]
            { iso(1) member-body(2) ru(643) rans(2)
              cryptopro(2) other(1) modules(1)
              cryptographic-Gost-Useful-Definitions(0) 1 }
        id-GostR3410-2001,
        GostR3410-2001-PublicKeyParameters -- in [<a href="#ref-CPALGS" title="&quot;Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms&quot;">CPALGS</a>]
        FROM GostR3410-2001-PKISyntax
            gostR3410-2001-PKISyntax
    ;
  -- GOST R 34.10-2001 signature data type
    GostR3410-2001-Signature ::=
        OCTET STRING (SIZE (64))
  -- GOST R 34.10-2001 signature algorithms and parameters
    GostR3410-2001-CMSSignatureAlgorithms



<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 22]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-23" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


        ALGORITHM-IDENTIFIER ::= {
                { GostR3410-2001-PublicKeyParameters IDENTIFIED BY
                        id-GostR3410-2001 }
        }
END -- GostR3410-2001-SignatureSyntax

<span class="h2"><a class="selflink" id="section-11" href="#section-11">11</a>.  Acknowledgements</span>

   This document was created in accordance with "Russian Cryptographic
   Software Compatibility Agreement", signed by FGUE STC "Atlas",
   CRYPTO-PRO, Factor-TS, MD PREI, Infotecs GmbH, SPRCIS (SPbRCZI),
   Cryptocom, R-Alpha.  The aim of this agreement is to achieve mutual
   compatibility of the products and solutions.

   The authors wish to thank:

      Microsoft Corporation Russia for providing information about
      company products and solutions, and also for technical consulting
      in PKI.

      RSA Security Russia and Demos Co Ltd for active collaboration and
      critical help in creation of this document.

      Russ Housley (Vigil Security, LLC, housley@vigilsec.com) and
      Vasilij Sakharov (DEMOS Co Ltd, svp@dol.ru) for encouraging the
      authors to create this document.

      Prikhodko Dmitriy (VSTU, PrikhodkoDV@volgablob.ru) for invaluable
      assistance in proofreading this document and verifying the form
      and the contents of the ASN.1 structures mentioned or used in this
      document.




















<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 23]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-24" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


<span class="h2"><a class="selflink" id="section-12" href="#section-12">12</a>.  References</span>

<span class="h3"><a class="selflink" id="section-12.1" href="#section-12.1">12.1</a>.  Normative References</span>

   [<a id="ref-CMS">CMS</a>]         Housley, R., "Cryptographic Message Syntax (CMS)", <a href="./rfc3852">RFC</a>
                 <a href="./rfc3852">3852</a>, July 2004.

   [<a id="ref-CPALGS">CPALGS</a>]      Popov, V., Kurepkin, I., and S. Leontiev, "Additional
                 Cryptographic Algorithms for Use with GOST 28147-89,
                 GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94
                 Algorithms", <a href="./rfc4357">RFC 4357</a>, January 2006.

   [<a id="ref-CPPK">CPPK</a>]        Leontiev, S., Ed. and D. Shefanovskij, Ed., "Using the
                 GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94
                 Algorithms with the Internet X.509 Public Key
                 Infrastructure Certificate and CRL Profile", <a href="./rfc4491">RFC 4491</a>,
                 May 2006.

   [<a id="ref-GOST28147">GOST28147</a>]   "Cryptographic Protection for Data Processing System",
                 GOST 28147-89, Gosudarstvennyi Standard of USSR,
                 Government Committee of the USSR for Standards, 1989.
                 (In Russian)

   [<a id="ref-GOST3431195">GOST3431195</a>] "Information technology. Cryptographic Data Security.
                 Cashing function.", GOST 34.311-95, Council for
                 Standardization, Metrology and Certification of the
                 Commonwealth of Independence States (EASC), Minsk,
                 1995. (In Russian)

   [<a id="ref-GOST3431095">GOST3431095</a>] "Information technology. Cryptographic Data Security.
                 Produce and check procedures of Electronic Digital
                 Signature based on Asymmetric Cryptographic
                 Algorithm.", GOST 34.310-95, Council for
                 Standardization, Metrology and Certification of the
                 Commonwealth of Independence States (EASC), Minsk,
                 1995. (In Russian)

   [<a id="ref-GOST3431004">GOST3431004</a>] "Information technology. Cryptographic Data Security.
                 Formation and verification processes of (electronic)
                 digital signature based on Asymmetric Cryptographic
                 Algorithm.", GOST 34.310-2004, Council for
                 Standardization, Metrology and Certification of the
                 Commonwealth of Independence States (EASC), Minsk,
                 2004. (In Russian)







<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 24]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-25" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


   [<a id="ref-GOSTR341094">GOSTR341094</a>] "Information technology. Cryptographic Data Security.
                 Produce and check procedures of Electronic Digital
                 Signatures based on Asymmetric Cryptographic
                 Algorithm.", GOST R 34.10-94, Gosudarstvennyi Standard
                 of Russian Federation, Government Committee of the
                 Russia for Standards, 1994. (In Russian)

   [<a id="ref-GOSTR341001">GOSTR341001</a>] "Information technology. Cryptographic data security.
                 Signature and verification processes of [electronic]
                 digital signature.", GOST R 34.10-2001, Gosudarstvennyi
                 Standard of Russian Federation, Government Committee of
                 the Russia for Standards, 2001. (In Russian)

   [<a id="ref-GOSTR341194">GOSTR341194</a>] "Information technology. Cryptographic Data Security.
                 Hashing function.", GOST R 34.10-94, Gosudarstvennyi
                 Standard of Russian Federation, Government Committee of
                 the Russia for Standards, 1994. (In Russian)

   [<a id="ref-PROFILE">PROFILE</a>]     Housley, R., Polk, W., Ford, W., and D. Solo, "Internet
                 X.509 Public Key Infrastructure Certificate and
                 Certificate Revocation List (CRL) Profile", <a href="./rfc3280">RFC 3280</a>,
                 April 2002.

   [<a id="ref-RFC2119">RFC2119</a>]     Bradner, S., "Key words for use in RFCs to Indicate
                 Requirement Levels", <a href="https://www.rfc-editor.org/bcp/bcp14">BCP 14</a>, <a href="./rfc2119">RFC 2119</a>, March 1997.

   [<a id="ref-RFC3851">RFC3851</a>]     Ramsdell, B., "Secure/Multipurpose Internet Mail
                 Extensions (S/MIME) Version 3.1 Message Specification",
                 <a href="./rfc3851">RFC 3851</a>, July 2004.

   [<a id="ref-X.208-88">X.208-88</a>]    CCITT.  Recommendation X.208: Specification of Abstract
                 Syntax Notation One (ASN.1).  1988.

   [<a id="ref-X.209-88">X.209-88</a>]    CCITT.  Recommendation X.209: Specification of Basic
                 Encoding Rules for Abstract Syntax Notation One
                 (ASN.1).  1988.

<span class="h3"><a class="selflink" id="section-12.2" href="#section-12.2">12.2</a>.  Informative References</span>

   [<a id="ref-CRYPTOLIC">CRYPTOLIC</a>]   "Russian Federal Government Regulation on Licensing of
                 Selected Activity Categories in Cryptography Area", 23
                 Sep 2002 N 691.

   [<a id="ref-RFC4134">RFC4134</a>]     Hoffman, P., "Examples of S/MIME Messages", <a href="./rfc4134">RFC 4134</a>,
                 July 2005.

   [<a id="ref-RFEDSL">RFEDSL</a>]      "Russian Federal Electronic Digital Signature Law", 10
                 Jan 2002 N 1-FZ.



<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 25]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-26" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


   [<a id="ref-RFLLIC">RFLLIC</a>]      "Russian Federal Law on Licensing of Selected Activity
                 Categories", 08 Aug 2001 N 128-FZ.

   [<a id="ref-Schneier95">Schneier95</a>]  B. Schneier, Applied Cryptography, Second Edition, John
                 Wiley &amp; Sons, Inc., 1995.














































<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 26]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-27" ></span>
<span class="grey"><a href="./rfc4490">RFC 4490</a>                  Using GOST with CMS                   May 2006</span>


Authors' Addresses

   Serguei Leontiev, Ed.
   CRYPTO-PRO
   38, Obraztsova,
   Moscow, 127018, Russian Federation

   EMail: lse@cryptopro.ru


   Grigorij Chudov, Ed.
   CRYPTO-PRO
   38, Obraztsova,
   Moscow, 127018, Russian Federation

   EMail: chudov@cryptopro.ru


   Vladimir Popov
   CRYPTO-PRO
   38, Obraztsova,
   Moscow, 127018, Russian Federation

   EMail: vpopov@cryptopro.ru


   Alexandr Afanasiev
   Factor-TS
   office 711, 14, Presnenskij val,
   Moscow, 123557, Russian Federation

   EMail: afa1@factor-ts.ru


   Nikolaj Nikishin
   Infotecs GmbH
   p/b 35, 80-5, Leningradskij prospekt,
   Moscow, 125315, Russian Federation

   EMail: nikishin@infotecs.ru


   Boleslav Izotov
   FGUE STC "Atlas"
   38, Obraztsova,
   Moscow, 127018, Russian Federation

   EMail: izotov@nii.voskhod.ru



<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 27]</span></pre>
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   Elena Minaeva
   MD PREI
   build 3, 6A, Vtoroj Troitskij per.,
   Moscow, Russian Federation

   EMail: evminaeva@mail.ru


   Igor Ovcharenko
   MD PREI
   Office 600, 14, B.Novodmitrovskaya,
   Moscow, Russian Federation

   EMail: igori@mo.msk.ru


   Serguei Murugov
   R-Alpha
   4/1, Raspletina,
   Moscow, 123060, Russian Federation

   EMail: msm@top-cross.ru


   Igor Ustinov
   Cryptocom
   office 239, 51, Leninskij prospekt,
   Moscow, 119991, Russian Federation

   EMail: igus@cryptocom.ru


   Anatolij Erkin
   SPRCIS (SPbRCZI)
   1, Obrucheva,
   St.Petersburg, 195220, Russian Federation

   EMail: erkin@nevsky.net













<span class="grey">Leontiev &amp; Chudov           Standards Track                    [Page 28]</span></pre>
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Full Copyright Statement

   Copyright (C) The Internet Society (2006).

   This document is subject to the rights, licenses and restrictions
   contained in <a href="https://www.rfc-editor.org/bcp/bcp78">BCP 78</a>, and except as set forth therein, the authors
   retain all their rights.

   This document and the information contained herein are provided on an
   "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
   OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
   ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
   INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
   INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
   WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Intellectual Property

   The IETF takes no position regarding the validity or scope of any
   Intellectual Property Rights or other rights that might be claimed to
   pertain to the implementation or use of the technology described in
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   might or might not be available; nor does it represent that it has
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   on the procedures with respect to rights in RFC documents can be
   found in <a href="https://www.rfc-editor.org/bcp/bcp78">BCP 78</a> and <a href="https://www.rfc-editor.org/bcp/bcp79">BCP 79</a>.

   Copies of IPR disclosures made to the IETF Secretariat and any
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   such proprietary rights by implementers or users of this
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   <a href="http://www.ietf.org/ipr">http://www.ietf.org/ipr</a>.

   The IETF invites any interested party to bring to its attention any
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   rights that may cover technology that may be required to implement
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Acknowledgement

   Funding for the RFC Editor function is provided by the IETF
   Administrative Support Activity (IASA).







Leontiev &amp; Chudov           Standards Track                    [Page 29]
</pre>