Network Working Group Sean Turner, IECA
Internet Draft October 3, 2008
Intended Status: Informational Track
Expires: April 3, 2009
Clearance Sponsor Attribute
draft-turner-clearancesponsor-attribute-00.txt
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Copyright Notice
Copyright (C) The IETF Trust (2008).
Abstract
This document defines the clearance sponsor attribute. This
attribute may be carried in a public key certificate in the Subject
Directory Attributes extension, in an attribute certificate in the
attribute field, in a directory as an attribute, or in protocols that
support attributes.
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1. Introduction
This document specifies the clearance sponsor attribute. This
attribute may be included in public key certificates [RFC5280],
attribute certificates [RFC3281], directories [X.500]/[RFC4512], or
locations that support attributes. These attributes may be used in
authorization decisions.
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 [RFC2119].
1.2. ASN.1 Syntax Notation
The attributes are defined using ASN.1 [X.680].
2. Clearance Sponsor
The clearance sponsor attribute indicates the sponsor of the
clearance of the object with which this attribute is associated.
This attribute is only meaningful if the clearance attribute [ID1] is
also present. The clearance sponsor attribute is a UTF8 [RFC3629]
string with a minimum size of 3 characters and a maximum of 15
characters.
The following object identifier identifies the sponsor attribute:
id-aa-KP-clearanceSponsor OBJECT IDENTIFIER ::= {
joint-iso-ccitt(2) country(16) us(840) organization(1) gov(101)
dod(2) infosec(1) attributes(5) 68
}
The ASN.1 syntax for the clearance sponsor attribute is as follows:
clearanceSponsor ATTRIBUTE ::= {
WITH SYNTAX clearanceSponsor
SINGLE VALUE TRUE
IDENTIFIED BY id-clearanceSponsor
}
clearanceSponsor ::= UTF8String ( SIZE(1..32) )
There must only be one value of clearanceSponsor associated with a
particular object.
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As per [RFC5280], all character sequences SHOULD be normalized
according to Unicode normalization form C (NFC) [NFC]. Further, when
performing matches the procedures in [RFC5280] must be followed.
3. Security Considerations
If this attribute is used as part of an authorization process, the
procedures employed by the entity that assigns each value must ensure
that the correct value is applied. Further, once applied to the
object it must be bound to the object; this binding is normally
performed by digitally signing over the object and the attribute to
ensure data integrity.
4. IANA Considerations
None: All identifiers are already registered. Please remove this
section prior to publication as an RFC.
5. References
5.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC3629] Yergeau, F., "UTF-8, a transformation format of ISO
10646", RFC 3629, November 2003.
[RFC3281] Farrell, S., and R. Housley, "An Internet Attribute
Certificate Profile for Authorization", RFC 3281, April
2002.
[RFC5280] Cooper, D., et.al., "Internet X.509 Public Key
Infrastructure Certificate and Certification Revocation
List (CRL) Profile", RFC 5280, May 2008.
[ID1] Turner, S., and S. Chokhani, "Clearance Attribute and
Authority Clearance Constraints Certificate Extension",
work-in-progress.
[X.680] ITU-T Recommendation X.680: Information Technology -
Abstract Syntax Notation One, 1997.
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5.2. Informative References
[NFC] Davis, M. and M. Duerst, "Unicode Standard Annex #15:
Unicode Normalization Forms", October 2006,
<http://www.unicode.org/reports/tr15/>.
[RFC4512] Sermersheim, J., "Lightweight Directory Access Protocol
(LDAP): Directory Information Models", RFC 4512, June
2006.
[X.500] ITU-T Recommendation X.500: Information Technology - Open
Systems Interconnection - The Directory, 1993.
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Appendix A. ASN.1 Module
This appendix provides the normative ASN.1 [X.680] definition for the
structure described in this specification.
ClearanceSponsorAttribute-2008
{ joint-iso-ccitt(2) country(16) us(840) organization(1) gov(101)
dod(2) infosec(1) modules(0)
id-clearanceSponsorAttribute-2008(35) }
DEFINITIONS IMPLICT TAGS ::=
BEGIN
-- EXPORTS ALL --
-- IMPORTS NOTHING --
-- sponsor attribute OID and syntax
id-aa-KP-clearanceSponsor OBJECT IDENTIFIER ::= {
joint-iso-ccitt(2) country(16) us(840) organization(1) gov(101)
dod(2) infosec(1) attributes(5) 68
}
clearanceSponsor ATTRIBUTE ::= {
WITH SYNTAX ClearanceSponsor
SINGLE VALUE TRUE
IDENTIFIED BY id-clearanceSponsor
}
ClearanceSponsor ::= UTF8String ( SIZE(1..32) )
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ATTRIBUTE ::= CLASS {
&derivation ATTRIBUTE OPTIONAL,
&Type OPTIONAL,
-- either &Type or &derivation required
&equality-match MATCHING-RULE OPTIONAL,
&ordering-match MATCHING-RULE OPTIONAL,
&substrings-match MATCHING-RULE OPTIONAL,
&single-valued BOOLEAN DEFAULT FALSE,
&collective BOOLEAN DEFAULT FALSE,
-- operational extensions
&no-user-modification BOOLEAN DEFAULT FALSE,
&usage AttributeUsage DEFAULT userApplications,
&id OBJECT IDENTIFIER UNIQUE }
WITH SYNTAX {
[ SUBTYPE OF &derivation ]
[ WITH SYNTAX &Type ]
[ EQUALITY MATCHING RULE &equality-match ]
[ ORDERING MATCHING RULE &ordering-match ]
[ SUBSTRINGS MATCHING RULE &substrings-match ]
[ SINGLE VALUE &single-valued ]
[ COLLECTIVE &collective ]
[ NO USER MODIFICATION &no-user-modification ]
[ USAGE &usage ]
ID &id }
MATCHING-RULE ::= CLASS {
&AssertionType OPTIONAL,
&id OBJECT IDENTIFIER UNIQUE }
WITH SYNTAX {
[ SYNTAX &AssertionType ]
ID &id }
AttributeType ::= ATTRIBUTE.&id
AttributeValue ::= ATTRIBUTE.&Type
AttributeUsage ::= ENUMERATED {
userApplications (0),
directoryOperation (1),
distributedOperation (2),
dSAOperation (3) }
END
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Author's Addresses
Sean Turner
IECA, Inc.
3057 Nutley Street, Suite 106
Fairfax, VA 22031
USA
Email: turners@ieca.com
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