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S/MIME Version 2 Certificate Handling (RFC2312)

IP.com Disclosure Number: IPCOM000002878D
Original Publication Date: 1998-Mar-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 15 page(s) / 37K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Dusse: AUTHOR [+4]


Status of this Memo

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 8% of the total text.

Network Working Group S. Dusse

Request for Comments: 2312 RSA Data Security

Category: Informational P. Hoffman

Internet Mail Consortium

B. Ramsdell


J. Weinstein


March 1998

S/MIME Version 2 Certificate Handling

Status of this Memo

This memo provides information for the Internet community. It does

not specify an Internet standard of any kind. Distribution of this

memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (1998). All Rights Reserved.

1. Overview

S/MIME (Secure/Multipurpose Internet Mail Extensions), described in

[SMIME-MSG], provides a method to send and receive secure MIME

messages. In order to validate the keys of a message sent to it, an

S/MIME agent needs to certify that the key is valid. This memo

describes the mechanisms S/MIME uses to create and validate keys

using certificates.

This specification is compatible with PKCS #7 in that it uses the

data types defined by PKCS #7. It also inherits all the varieties of

architectures for certificate-based key management supported by PKCS

#7. Note that the method S/MIME messages make certificate requests

is defined in [SMIME-MSG].

In order to handle S/MIME certificates, an agent has to follow

specifications in this memo, as well as some of the specifications

listed in the following documents:

- "PKCS #1: RSA Encryption", [PKCS-1].

- "PKCS #7: Cryptographic Message Syntax", [PKCS-7]

- "PKCS #10: Certification Request Syntax", [PKCS-10].

Please note: The information in this document is historical material

being published for the public record. It is not an IETF standard.

The use of the word "standard" in this document indicates a standard

for adopters of S/MIME version 2, not an IETF standard.

1.1 Definitions

For the purposes of this memo, the following definitions apply.

ASN.1: Abstract Syntax Notation One, as defined in CCITT X.208.

BER: Basic Encoding Rules for ASN.1, as defined in CCITT X.209.

Certificate: A type that binds an entity's distinguished name to a

public key with a digital signature. This type is defined in CCITT

X.509 [X.509]. This type also contains the distinguished name of the

certificate issuer (the signer), an issuer-specific serial number,

the issuer's signature algorithm identifier, and a validity period.

Certificate Revocation List (CRL): A type that contains information

about certificates whose validity an issuer has prematurely revoked.

The information consists of an issuer name, the time of...