Cryptographic Message Syntax (CMS)
RFC 5652
| Document | Type |
RFC - Internet Standard
(September 2009; Errata)
Obsoletes RFC 3852
Also known as STD 70
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| This information refers to IESG processing after the RFC was initially published: | |||
| IESG | IESG state | RFC 5652 (Internet Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Tim Polk | ||
| Send notices to | (None) | ||
Network Working Group R. Housley
Request for Comments: 5652 Vigil Security
Obsoletes: 3852 September 2009
Category: Standards Track
Cryptographic Message Syntax (CMS)
Abstract
This document describes the Cryptographic Message Syntax (CMS). This
syntax is used to digitally sign, digest, authenticate, or encrypt
arbitrary message content.
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 and License Notice
Copyright (c) 2009 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
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to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the BSD License.
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
10, 2008. The person(s) controlling the copyright in some of this
material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
the copyright in such materials, this document may not be modified
outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
Housley Standards Track [Page 1]
RFC 5652 Cryptographic Message Syntax September 2009
Table of Contents
1. Introduction ....................................................3
1.1. Evolution of the CMS .......................................4
1.1.1. Changes Since PKCS #7 Version 1.5 ...................4
1.1.2. Changes Since RFC 2630 ..............................4
1.1.3. Changes Since RFC 3369 ..............................5
1.1.4. Changes Since RFC 3852 ..............................5
1.2. Terminology ................................................5
1.3. Version Numbers ............................................6
2. General Overview ................................................6
3. General Syntax ..................................................7
4. Data Content Type ...............................................7
5. Signed-data Content Type ........................................8
5.1. SignedData Type ............................................9
5.2. EncapsulatedContentInfo Type ..............................11
5.2.1. Compatibility with PKCS #7 .........................12
5.3. SignerInfo Type ...........................................13
5.4. Message Digest Calculation Process ........................16
5.5. Signature Generation Process ..............................16
5.6. Signature Verification Process ............................17
6. Enveloped-Data Content Type ....................................17
6.1. EnvelopedData Type ........................................18
6.2. RecipientInfo Type ........................................21
6.2.1. KeyTransRecipientInfo Type .........................22
6.2.2. KeyAgreeRecipientInfo Type .........................23
6.2.3. KEKRecipientInfo Type ..............................25
6.2.4. PasswordRecipientInfo Type .........................26
6.2.5. OtherRecipientInfo Type ............................27
6.3. Content-encryption Process ................................27
6.4. Key-Encryption Process ....................................28
7. Digested-Data Content Type .....................................28
8. Encrypted-Data Content Type ....................................29
9. Authenticated-Data Content Type ................................30
9.1. AuthenticatedData Type ....................................31
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