X.509 Certificate Extension for Secure/Multipurpose Internet Mail Extensions (S/MIME) Capabilities 4262 Справочная информация по SSL сертификатам Украина ☎ +380672576220 

☎ +380443834054
☎ +380672576220
Ukrainian Symantec Partner
Ukrainian DigiCert Partner
Контакты
Официальные документы RFC для сертификатов
технические требования, спецификации и стандарты

Переход на сайт по продаже сертификатов SSL и подписи кода документов почты CSR
pKey
Установка
SSL
Цепочка
SSL
Проверка
SSL
Seal
SSL
Экспорт-Импорт
Конвертер
Code Sign
сертификаты
Email Smime
сертификаты
PDF и Word
сертификаты
База
знаний

Обзор требований стандарта сертификатов x.509Стандарт x.509
Документы RFC
rfc765 протокол ФТП
rfc854 протокол ТЕЛНЕТ
rfc1035 доменные имена
rfc1321 алгоритм MD5
rfc1945 протокол HTTP/1.0
rfc2119 ключевые слова
rfc2246 TLS протокол v.1.0
rfc2246* TLS протокол v.1 new
rfc2437 спецификация RSA 2.0
rfc2459 x.509 профиль CRL
rfc2511 x.509 форма запроса
rfc2527 x.509 принципы
rfc2549 стандарт IP
rfc2560 x.509 - OCSP
rfc2585 x.509 FTP HTTP
rfc2616 протокол HTTP / 1.1
rfc2986 Спецификация CSR
rfc3029 x.509 протокол данных
rfc3161 x.509 метка времени
rfc3279 x.509 профиль CRL
rfc3280 x.509 профиль CRL*
rfc3281 атрибуты сертификата
rfc3443 процесс TTL
rfc3447 спецификация RSA 2.1
rfc3546 расширения TLS
rfc3597 обработка DNS RR
rfc3647 x.509 полис*
rfc3709 x.509 логотипы
rfc3739 x.509 профиль*
rfc3779 x.509 IP и AS
rfc4043 x.509 идентификатор
rfc4051 XML URI
rfc4055 x.509 RSA
rfc4059 x.509 гарантии
rfc4158 x.509 цепь доверия
rfc4210 x.509 протокол CMP
rfc4211 x.509 запрос*
rfc4212 x.509 CRMF PKIX
rfc4262 x.509 s/mime
rfc4325 x.509 профиль CRL**
rfc4346 TLS протокол v.1.1
rfc4366 TLS протокол v.1.1*
rfc4523 x.509 протокол LDAP
rfc5019 SMTP для особых сред
rfc5070 Обмена данными
rfc5246 TLS протокол 1.2
rfc5280 x.509 профиль CRL
rfc5480 ECC криптография
rfc5698 DSSC структура
rfc5741 RFC информация
rfc5750 s/mime v.3.2
rfc6066 TLS протокол
rfc6101 SSL протокол v.3.0
rfc6394 DNS DANE
rfc6454 Концепция Web Origin
rfc6455 WebSocket протокол
rfc6520 DTLS расширения TLS
rfc6546 RID HTTP/TLS
rfc6698 TLSA и DNS DANE
rfc6797 HSTS протокол
rfc6844 CAA DNS записи
rfc6960 OCSP статус
rfc6962 Прозрачность
rfc8446 TLS 1.3

We are an Authorized Reseller for DigiCert™ SSL a WebTrust Certified
SSL Certificate Authority.

x.509 Расширение сертификата для защищенных / многоцелевых расширений интернет-почты (S / MIME)


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.

Abstract

   This document defines a certificate extension for inclusion of
   Secure/Multipurpose Internet Mail Extensions (S/MIME) Capabilities in
   X.509 public key certificates, as defined by RFC 3280.  This
   certificate extension provides an optional method to indicate the
   cryptographic capabilities of an entity as a complement to the S/MIME
   Capabilities signed attribute in S/MIME messages according to RFC    3851.

=====================================

Network Working Group                                       S. Santesson
Request for Comments: 4262                                     Microsoft
Category: Standards Track                                  December 2005


                    X.509 Certificate Extension for
   Secure/Multipurpose Internet Mail Extensions (S/MIME) Capabilities

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 (2005).

Abstract

   This document defines a certificate extension for inclusion of
   Secure/Multipurpose Internet Mail Extensions (S/MIME) Capabilities in
   X.509 public key certificates, as defined by RFC 3280.  This
   certificate extension provides an optional method to indicate the
   cryptographic capabilities of an entity as a complement to the S/MIME
   Capabilities signed attribute in S/MIME messages according to RFC
   3851.

1.  Introduction

   This document defines a certificate extension for inclusion of S/MIME
   Capabilities in X.509 public key certificates, as defined by RFC 3280
   [RFC3280].

   The S/MIME Capabilities attribute, defined in RFC 3851 [RFC3851], is
   defined to indicate cryptographic capabilities of the sender of a
   signed S/MIME message.  This information can be used by the recipient
   in subsequent S/MIME secured exchanges to select appropriate
   cryptographic properties.

   However, S/MIME does involve also the scenario where, for example, a
   sender of an encrypted message has no prior established knowledge of
   the recipient's cryptographic capabilities through recent S/MIME
   exchanges.





Santesson                   Standards Track                     [Page 1]

RFC 4262             S/MIME Capabilities Extensions        December 2005


   In such a case, the sender is forced to rely on out-of-band means or
   its default configuration to select a content encryption algorithm
   for encrypted messages to recipients with unknown capabilities.  Such
   default configuration may, however, be incompatible with the
   recipient's capabilities and/or security policy.

   The solution defined in this specification leverages the fact that
   S/MIME encryption requires possession of the recipient's public key
   certificate.  This certificate already contains information about the
   recipient's public key and the cryptographic capabilities of this
   key.  Through the extension mechanism defined in this specification,
   the certificate may also identify the subject's cryptographic S/MIME
   capabilities.  This may then be used as an optional information
   resource to select appropriate encryption settings for the
   communication.

   This document is limited to the "static" approach where asserted
   cryptographic capabilities remain unchanged until the certificate
   expires or is revoked.  Other "dynamic" approaches, which allow
   retrieval of certified dynamically updateable capabilities during the
   lifetime of a certificate, are out of scope of this document.

1.1.  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 RFC 2119 [STDWORDS].

2.  S/MIME Capabilities Extension

   This section defines the S/MIME Capabilities extension.

   The S/MIME Capabilities extension data structure used in this
   specification is identical to the data structure of the
   SMIMECapabilities attribute defined in RFC 3851 [RFC3851].  (The
   ASN.1 structure of smimeCapabilities is included below for
   illustrative purposes only.)

      smimeCapabilities OBJECT IDENTIFIER ::=
         {iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1)
         pkcs-9(9) 15}

      SMIMECapabilities ::= SEQUENCE OF SMIMECapability

      SMIMECapability ::= SEQUENCE {
         capabilityID OBJECT IDENTIFIER,
         parameters ANY DEFINED BY capabilityID OPTIONAL }




Santesson                   Standards Track                     [Page 2]

RFC 4262             S/MIME Capabilities Extensions        December 2005


   All content requirements defined for the SMIMECapabilities attribute
   in RFC 3851 apply also to this extension.

   There are numerous different types of S/MIME Capabilities that have
   been defined in various documents.  While all of the different
   capabilities can be placed in this extension, the intended purpose of
   this specification is mainly to support inclusion of S/MIME
   Capabilities specifying content encryption algorithms.

   Certification Authorities (CAs) SHOULD limit the type of included
   S/MIME Capabilities in this extension to types that are considered
   relevant to the intended use of the certificate.

   Client applications processing this extension MAY at their own
   discretion ignore any present S/MIME Capabilities and SHOULD always
   gracefully ignore any present S/MIME Capabilities that are not
   considered relevant to the particular use of the certificate.

   This extension MUST NOT be marked critical.

3.  Use in Applications

   Applications using the S/MIME Capabilities extension SHOULD NOT use
   information in the extension if more reliable and relevant
   authenticated capabilities information is available to the
   application.

   It is outside the scope of this specification to define what is, or
   is not, regarded as a more reliable source of information by the
   application that is using the certificate.

4.  Security Considerations

   The S/MIME Capabilities extension contains a statement about the
   subject's capabilities made at the time of certificate issuance.
   Implementers should therefore take into account any effect caused by
   the change of these capabilities during the lifetime of the
   certificate.

   Change in the subject's capabilities during the lifetime of a
   certificate may require revocation of the certificate.  Revocation
   should, however, only be motivated if a listed algorithm is
   considered broken or considered too weak for the governing security
   policy.







Santesson                   Standards Track                     [Page 3]

RFC 4262             S/MIME Capabilities Extensions        December 2005


   Implementers should take into account that the use of this extension
   does not change the fact that it is always the responsibility of the
   sender to choose sufficiently strong encryption for its information
   disclosure.

5.  Normative References

   [STDWORDS] Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC3280]  Housley, R., Polk, W., Ford, W., and D. Solo, "Internet
              X.509 Public Key Infrastructure Certificate and
              Certificate Revocation List (CRL) Profile", RFC 3280,
              April 2002.

   [RFC3851]  Ramsdell, B., "Secure/Multipurpose Internet Mail
              Extensions (S/MIME) Version 3.1 Message Specification",
              RFC 3851, July 2004.

Author's Address

   Stefan Santesson
   Microsoft
   Tuborg Boulevard 12
   2900 Hellerup
   Denmark

   EMail: stefans@microsoft.com























Santesson                   Standards Track                     [Page 4]

RFC 4262             S/MIME Capabilities Extensions        December 2005


Full Copyright Statement

   Copyright (C) The Internet Society (2005).

   This document is subject to the rights, licenses and restrictions
   contained in BCP 78, 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
   this document or the extent to which any license under such rights
   might or might not be available; nor does it represent that it has
   made any independent effort to identify any such rights.  Information
   on the procedures with respect to rights in RFC documents can be
   found in BCP 78 and BCP 79.

   Copies of IPR disclosures made to the IETF Secretariat and any
   assurances of licenses to be made available, or the result of an
   attempt made to obtain a general license or permission for the use of
   such proprietary rights by implementers or users of this
   specification can be obtained from the IETF on-line IPR repository at
   http://www.ietf.org/ipr.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights that may cover technology that may be required to implement
   this standard.  Please address the information to the IETF at ietf-
   ipr@ietf.org.

Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.







Santesson                   Standards Track                     [Page 5]




 DV SSL OV Сертификаты подтверждающие только Домен OV SSL OV Сертификаты подтверждающие Домен и Организацию EV SSL EV Зеленые усиленные сертификаты с указанием названия Организации подтверждают Домен и Организацию WC SSL wildcard Сертификаты защищающие все субдомены. Класс DV OV и EV SAN SSL SAN Мульти доменные  сертификаты защищающие несколько FQDN Доменов. Класс DV OV и EV PRO SSL SGC PRO сертификаты с технологией  Server Gated Cryptography. Класс  OV и EV CodeSign Сертификаты для подписи приложений и програмного кода MS, Java. Класс  OV и EV Email Сертификаты для подписи емаил smime. Класс  DV OV PDF Сертификаты для подписи документов PDF. Класс  OV PV Wi-Fi Сертификаты DigiCert для IoT и Wi Fi IoT Сертификаты DigiCert для IIoT ALL Все сертификаты Symantec Familie: Symantec, thawte, GeoTrust, DigiCert Купить сертификат

NO russia - мы не осблуживаем резидентов из россии Copyright © 1997-2018 adgrafics