Network Working Group J. Schaad Internet-Draft Soaring Hawk Consulting Intended status: Standards Track S. Turner Expires: January 12, 2011 IECA, Inc. July 11, 2010 Additional New ASN.1 Modules draft-turner-additional-new-asn-01 Abstract The Cryptographic Message Syntax (CMS) format, and many associated formats, are expressed using ASN.1. The current ASN.1 modules conform to the 1988 version of ASN.1. This document updates some auxiliary ASN.1 modules to conform to the 2008 version of ASN.1. There are no bits-on-the-wire changes to any of the formats; this is simply a change to the syntax. Status of this Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on January 12, 2011. Copyright Notice Copyright (c) 2010 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 carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of Schaad & Turner Expires January 12, 2011 [Page 1] Internet-Draft Additional New ASN.1 Modules July 2010 the Trust Legal Provisions and are provided without warranty as described in the Simplified 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. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1. Requirements Terminology . . . . . . . . . . . . . . . . . 3 2. ASN.1 Module RFC 3274 . . . . . . . . . . . . . . . . . . . . 5 3. ASN.1 Module RFC 3379 . . . . . . . . . . . . . . . . . . . . 7 4. ASN.1 Module RFC 4049 . . . . . . . . . . . . . . . . . . . . 9 5. ASN.1 Module RFC 4073 . . . . . . . . . . . . . . . . . . . . 10 6. ASN.1 Module RFC 4231 . . . . . . . . . . . . . . . . . . . . 12 7. ASN.1 Module RFC 4334 . . . . . . . . . . . . . . . . . . . . 15 8. ASN.1 Module RFC 5752 . . . . . . . . . . . . . . . . . . . . 17 9. ASN.1 Module RFC 5652 . . . . . . . . . . . . . . . . . . . . 19 10. ASN.1 Module RFC 5083 . . . . . . . . . . . . . . . . . . . . 29 11. Module Identifiers in ASN.1 . . . . . . . . . . . . . . . . . 31 12. Security Considerations . . . . . . . . . . . . . . . . . . . 33 13. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 34 14. Normative References . . . . . . . . . . . . . . . . . . . . . 35 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 37 Schaad & Turner Expires January 12, 2011 [Page 2] Internet-Draft Additional New ASN.1 Modules July 2010 1. Introduction Some developers would like the IETF to use the latest version of ASN.1 in its standards. Most of the RFCs that relate to security protocols still use ASN.1 from the 1988 standard, which has been deprecated. This is particularly true for the standards that relate to PKIX, CMS, and S/MIME. In this document we have either change the syntax to use the 2008 ASN.1 standard, or done some updates from previous conversions: RFC 3274, Compressed Data Content Type for Cryptographic Message Syntax (CMS) [RFC3274] RFC 3379, Delegated Path Validation and Delegated Path Discovery Protocol Requirements [RFC3379] RFC 4049, BinaryTime: An Alternate Format for Representing Date and Time in ASN.1 [RFC4049] RFC 4073, Protecting Multiple Contents with the Cryptographic Message Syntax (CMS) [RFC4073] RFC 4231, Identifiers and Test Vectors for HMAC-SHA-224, HMAC-SHA- 256, HMAC-SHA-384, and HMAC-SHA-512 [RFC4231] RFC 4334, Certificate Extensions and Attributes Supporting Authentication in Point-to-Point Protocol (PPP) and Wireless Local Area Networks (WLAN) [RFC4334] RFC 5752, Multiple Signatures in Cryptographic Message Syntax (CMS) [RFC5752] RFC 5652, Cryptogrphic Message Syntax (CMS) [RFC5652] RFC 5083, Cryptographic Message Syntax (CMS) Authenticated- Enveloped-Data Content Type [RFC5083]. Note that some of the modules in this document get some of their definitions from places different than the modules in the original RFCs. The idea is that these modules, when combined with the modules in [RFC5912] and [RFC5911] can stand on their own and do not need to import definitions from anywhere else. 1.1. Requirements Terminology The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this Schaad & Turner Expires January 12, 2011 [Page 3] Internet-Draft Additional New ASN.1 Modules July 2010 document are to be interpreted as described in [RFC2119]. Schaad & Turner Expires January 12, 2011 [Page 4] Internet-Draft Additional New ASN.1 Modules July 2010 2. ASN.1 Module RFC 3274 CompressedDataContent { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) modules(0) TBD } DEFINITIONS IMPLICIT TAGS ::= BEGIN IMPORTS CMSVersion, EncapsulatedContentInfo, CONTENT-TYPE FROM CryptographicMessageSyntax-2009 { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) modules(0) TBD } AlgorithmIdentifier{}, SMIME-CAPS, ParamOptions FROM AlgorithmInformation-2009 {iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) id-mod-algorithmInformation-02(58)} ; -- -- -- ContentTypes CONTENT-TYPE ::= {ct-compressedData} SMimeCaps SMIME-CAPS ::= {cpa-zlibCompress.&smimeCaps} ct-compressedData CONTENT-TYPE ::= { CompressedData IDENTIFIED BY id-ct-compressedData } CompressedData ::= SEQUENCE { version CMSVersion, -- Always set to 0 compressionAlgorithm CompressionAlgorithmIdentifier, encapContentInfo EncapsulatedContentInfo } CompressionAlgorithmIdentifier ::= AlgorithmIdentifier{COMPRESS-ALGORITHM, {CompressAlgorithmSet}} CompressAlgorithmSet COMPRESS-ALGORITHM ::= { cpa-zlibCompress, ... Schaad & Turner Expires January 12, 2011 [Page 5] Internet-Draft Additional New ASN.1 Modules July 2010 } -- Algorithm Identifiers id-alg-zlibCompress OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) alg(3) 8 } cpa-zlibCompress COMPRESS-ALGORITHM ::= { IDENTIFIER id-alg-zlibCompress PARAMS TYPE NULL ARE preferredAbsent SMIME-CAPS {IDENTIFIED BY id-alg-zlibCompress} } -- Content Type Object Identifiers id-ct-compressedData OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) ct(1) 9 } -- -- Class defined for compression algorithms -- COMPRESS-ALGORITHM ::= CLASS { &id OBJECT IDENTIFIER UNIQUE, &Params OPTIONAL, ¶mPresence ParamOptions DEFAULT absent, &smimeCaps SMIME-CAPS OPTIONAL } WITH SYNTAX { IDENTIFIER &id [PARAMS [TYPE &Params] ARE ¶mPresence] [SMIME-CAPS &smimeCaps] } END Schaad & Turner Expires January 12, 2011 [Page 6] Internet-Draft Additional New ASN.1 Modules July 2010 3. ASN.1 Module RFC 3379 IPAddrAndASCertExtn { iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) mod(0) TBD } DEFINITIONS EXPLICIT TAGS ::= BEGIN EXPORTS ALL; IMPORTS -- PKIX specific OIDs and arcs -- id-pe FROM PKIX1Explicit-2009 { iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) id-mod-pkix1-explicit-02(51)} EXTENSION FROM PKIX-CommonTypes-2009 { iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) id-mod-pkixCommon-02(57)} ; -- IP Address Delegation Extension OID -- ext-pe-ipAddrBlocks EXTENSION ::= { SYNTAX IPAddrBlocks IDENTIFIED BY id-pe-ipAddrBlocks } id-pe-ipAddrBlocks OBJECT IDENTIFIER ::= { id-pe 7 } -- IP Address Delegation Extension Syntax -- IPAddrBlocks ::= SEQUENCE OF IPAddressFamily IPAddressFamily ::= SEQUENCE { -- AFI & opt SAFI -- addressFamily OCTET STRING (SIZE (2..3)), ipAddressChoice IPAddressChoice } IPAddressChoice ::= CHOICE { inherit NULL, -- inherit from issuer -- addressesOrRanges SEQUENCE OF IPAddressOrRange } IPAddressOrRange ::= CHOICE { addressPrefix IPAddress, addressRange IPAddressRange } Schaad & Turner Expires January 12, 2011 [Page 7] Internet-Draft Additional New ASN.1 Modules July 2010 IPAddressRange ::= SEQUENCE { min IPAddress, max IPAddress } IPAddress ::= BIT STRING -- Autonomous System Identifier Delegation Extension OID -- ext-pe-autonomousSysIds EXTENSION ::= { SYNTAX ASIdentifiers IDENTIFIED BY id-pe-autonomousSysIds } id-pe-autonomousSysIds OBJECT IDENTIFIER ::= { id-pe 8 } -- Autonomous System Identifier Delegation Extension Syntax -- ASIdentifiers ::= SEQUENCE { asnum [0] ASIdentifierChoice OPTIONAL, rdi [1] ASIdentifierChoice OPTIONAL } (WITH COMPONENTS {..., asnum PRESENT} | WITH COMPONENTS {..., rdi PRESENT}) ASIdentifierChoice ::= CHOICE { inherit NULL, -- inherit from issuer -- asIdsOrRanges SEQUENCE OF ASIdOrRange } ASIdOrRange ::= CHOICE { id ASId, range ASRange } ASRange ::= SEQUENCE { min ASId, max ASId } ASId ::= INTEGER END Schaad & Turner Expires January 12, 2011 [Page 8] Internet-Draft Additional New ASN.1 Modules July 2010 4. ASN.1 Module RFC 4049 BinarySigningTimeModule-2009 { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) modules(0) TBD0 } DEFINITIONS IMPLICIT TAGS ::= BEGIN IMPORTS -- From PKIX-CommonTypes-2009 [RFC5912] ATTRIBUTE FROM PKIX-CommonTypes-2009 { iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) id-mod-pkixCommon-02(57) } ; -- -- BinaryTime Definition -- -- BinaryTime contains the number seconds since -- midnight Jan 1, 1970 UTC. -- Leap seconds are EXCLUDED from the computation. -- BinaryTime ::= INTEGER (0..MAX) -- -- Signing Binary Time Attribute -- -- The binary signing time should be added to the -- SignedAttributeSet and the AuthenticatedAttributeSet -- in the CMS modules. -- aa-binarySigningTime ATTRIBUTE ::= { TYPE BinarySigningTime IDENTIFIED BY id-aa-binarySigningTime } id-aa-binarySigningTime OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs9(9) smime(16) aa(2) 46 } BinarySigningTime ::= BinaryTime END Schaad & Turner Expires January 12, 2011 [Page 9] Internet-Draft Additional New ASN.1 Modules July 2010 5. ASN.1 Module RFC 4073 ContentCollectionModule-2009 { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) modules(0) TBD1 } DEFINITIONS IMPLICIT TAGS ::= BEGIN IMPORTS -- From CryptographicMessageSyntax-2009 [RFC5911] CONTENT-TYPE, ContentInfo FROM CryptographicMessageSyntax-2009 { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) modules(0) TBD } AttributeSet{} FROM PKIX-CommonTypes-2009 { iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) id-mod-pkixCommon-02(57) } ; -- -- An object set of all content types defined by this module. -- This is to be added to ContentSet in the CMS module -- ContentSet CONTENT-TYPE ::= { ct-ContentCollection | ct-ContentWithAttributes, ... } -- -- Content Collection Content Type and Object Identifier -- ct-ContentCollection CONTENT TYPE ::= { ContentCollection IDENTIFIED BY id-ct-contentCollection } id-ct-contentCollection OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) ct(1) 19 } ContentCollection ::= SEQUENCE SIZE (1..MAX) OF ContentInfo -- -- Content With Attributes Content Type and Object Identifier -- Schaad & Turner Expires January 12, 2011 [Page 10] Internet-Draft Additional New ASN.1 Modules July 2010 ct-ContentWithAttributes CONTENT TYPE ::= { { ContentWithAttributes IDENTIFIED BY id-ct-contentWithAttrs } id-ct-contentWithAttrs OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) ct(1) 20 } ContentWithAttributes ::= SEQUENCE { content ContentInfo, attrs SEQUENCE SIZE (1..MAX) OF AttributeSet { ContentAttributeSet } ContentAttributeSet ATTRIBUTE ::= { ... } END Schaad & Turner Expires January 12, 2011 [Page 11] Internet-Draft Additional New ASN.1 Modules July 2010 6. ASN.1 Module RFC 4231 HMAC { TBD } DEFINITIONS EXPLICIT TAGS ::= BEGIN EXPORTS ALL; IMPORTS MAC-ALGORITHM, SMIME-CAPS FROM AlgorithmInformation-2009 { iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) id-mod-algorithmInformation-02(58)}; -- -- This object set contains all of the MAC algorithms that are -- defined in this module. -- One would add it to a constraining set of objects such as the -- MessageAuthenticationCodeAlgorithmSet in [RFC5652] -- MessageAuthAlgs MAC-ALGORITHM ::= { maca-hMAC-SHA224 | maca-hMAC-SHA256 | maca-hMAC-SHA384 | maca-hMAC-SHA512 } -- -- This object set contains all of the S/MIME capabilities that -- have been defined for all the MAC algorithms in this module. -- One would add this to an object set that is used to restrict -- smime capabilities such as the SMimeCapsSet variable in -- the S/MIME message draft -- SMimeCaps SMIME-CAPS ::= { maca-hMAC-SHA224.&smimeCaps | maca-hMAC-SHA256.&smimeCaps | maca-hMAC-SHA384.&smimeCaps | maca-hMAC-SHA512.&smimeCaps } -- -- Define the base OID for the algorithm identifiers -- Schaad & Turner Expires January 12, 2011 [Page 12] Internet-Draft Additional New ASN.1 Modules July 2010 rsadsi OBJECT IDENTIFIER ::= {iso(1) member-body(2) us(840) rsadsi(113549)} digestAlgorithm OBJECT IDENTIFIER ::= {rsadsi 2} -- -- Define the necessary algorithm identifiers -- id-hmacWithSHA224 OBJECT IDENTIFIER ::= {digestAlgorithm 8} id-hmacWithSHA256 OBJECT IDENTIFIER ::= {digestAlgorithm 9} id-hmacWithSHA384 OBJECT IDENTIFIER ::= {digestAlgorithm 10} id-hmacWithSHA512 OBJECT IDENTIFIER ::= {digestAlgorithm 11} -- -- Define each of the MAC-ALGOIRTHM objects to describe the -- algorithms defined -- maca-hMAC-SHA224 MAC-ALGORITHM ::= { IDENTIFIER id-hmacWithSHA224 PARAMS TYPE NULL ARE preferredPresent IS-KEYED-MAC TRUE SMIME-CAPS {IDENTIFIED BY id-hmacWithSHA224} } maca-hMAC-SHA256 MAC-ALGORITHM ::= { IDENTIFIER id-hmacWithSHA256 PARAMS TYPE NULL ARE preferredPresent IS-KEYED-MAC TRUE SMIME-CAPS {IDENTIFIED BY id-hmacWithSHA256} } maca-hMAC-SHA384 MAC-ALGORITHM ::= { IDENTIFIER id-hmacWithSHA384 PARAMS TYPE NULL ARE preferredPresent IS-KEYED-MAC TRUE SMIME-CAPS {IDENTIFIED BY id-hmacWithSHA384} } maca-hMAC-SHA512 MAC-ALGORITHM ::= { IDENTIFIER id-hmacWithSHA512 PARAMS TYPE NULL ARE preferredPresent IS-KEYED-MAC TRUE SMIME-CAPS {IDENTIFIED BY id-hmacWithSHA512} Schaad & Turner Expires January 12, 2011 [Page 13] Internet-Draft Additional New ASN.1 Modules July 2010 } END Schaad & Turner Expires January 12, 2011 [Page 14] Internet-Draft Additional New ASN.1 Modules July 2010 7. ASN.1 Module RFC 4334 WLANCertExtn { iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) TBD } DEFINITIONS IMPLICIT TAGS ::= BEGIN EXPORTS ALL; IMPORTS EXTENSION, ATTRIBUTE FROM PKIX-CommonTypes-2009 {iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) id-mod-pkixCommon-02(57)} id-pe, id-kp FROM PKIX1Explicit-2009 { iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) id-mod-pkix1-explicit-02(51)} id-aca FROM PKIXAttributeCertificate-2009 { iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) id-mod-attribute-cert-02(47)} ; -- Extended Key Usage Values KeyUsageValues OBJECT IDENTIFIER ::= { id-kp-eapOverPPP | id-kp-eapOverLAN } id-kp-eapOverPPP OBJECT IDENTIFIER ::= { id-kp 13 } id-kp-eapOverLAN OBJECT IDENTIFIER ::= { id-kp 14 } -- Wireless LAN SSID Extension ext-pe-wlanSSID EXTENSION ::= { SYNTAX SSIDList IDENTIFIED BY id-pe-wlanSSID Schaad & Turner Expires January 12, 2011 [Page 15] Internet-Draft Additional New ASN.1 Modules July 2010 CRITICALITY {FALSE} } id-pe-wlanSSID OBJECT IDENTIFIER ::= { id-pe 13 } SSIDList ::= SEQUENCE SIZE (1..MAX) OF SSID SSID ::= OCTET STRING (SIZE (1..32)) -- Wireless LAN SSID Attribute Certificate Attribute -- Uses same syntax as the certificate extension: SSIDList at-aca-wlanSSID ATTRIBUTE ::= { TYPE SSIDList IDENTIFIED BY id-aca-wlanSSID } id-aca-wlanSSID OBJECT IDENTIFIER ::= { id-aca 7 } END Schaad & Turner Expires January 12, 2011 [Page 16] Internet-Draft Additional New ASN.1 Modules July 2010 8. ASN.1 Module RFC 5752 MultipleSignatures-2009 { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs9(9) smime(16) modules(0) TBD2 } DEFINITIONS IMPLICIT TAGS ::= BEGIN -- EXPORTS All -- The types and values defined in this module are exported for use -- in the other ASN.1 modules. Other applications may use them for -- their own purposes. IMPORTS -- Imports from PKIX-Common-Types-2009 [RFC5912] ATTRIBUTE FROM PKIX-CommonTypes-2009 { iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) id-mod-pkixCommon-02(57) } -- Imports from CryptographicMessageSyntax-2009 [RFC5911] DigestAlgorithmIdentifier, SignatureAlgorithmIdentifier FROM CryptographicMessageSyntax-2009 { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) modules(0) TBD } -- Imports from ExtendedSecurityServices-2009 [RFC5911] ESSCertIDv2 FROM ExtendedSecurityServices-2009 { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) modules(0) id-mod-ess-2006-02(42) } ; -- -- Section 3.0 -- -- at-multipleSignatures should be added ONLY to the -- SignedAttributesSet defined in [RFC5652] -- at-multipleSignatures ATTRIBUTE ::= { TYPE MultipleSignatures IDENTIFIED BY id-aa-multipleSignatures } Schaad & Turner Expires January 12, 2011 [Page 17] Internet-Draft Additional New ASN.1 Modules July 2010 id-aa-multipleSignatures OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs9(9) id-aa(2) 51 } MultipleSignatures ::= SEQUENCE { bodyHashAlg DigestAlgorithmIdentifier, signAlg SignatureAlgorithmIdentifier, signAttrsHash SignAttrsHash, cert ESSCertIDv2 OPTIONAL } SignAttrsHash ::= SEQUENCE { algID DigestAlgorithmIdentifier, hash OCTET STRING } END Schaad & Turner Expires January 12, 2011 [Page 18] Internet-Draft Additional New ASN.1 Modules July 2010 9. ASN.1 Module RFC 5652 This module is updated from RFC 5911 [RFC5911] by defining seperate attribute sets for the protected and unprotected attribute sets. By using different attribute sets for EncryptedData and EnvelopedData as well as for AuthenticatedData and AuthEnvelopedData, protocol designers can make use of the '02 ASN.1 constraints to define different sets of attributes for EncryptedData and EnvelopedData and for AuthenticatedData and AuthEnvelopedData. Previously, attributes could only be constrained based on whether they were in the clear or unauthenticated not on the encapsulating content type. CryptographicMessageSyntax-2009 { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) modules(0) TBD } DEFINITIONS IMPLICIT TAGS ::= BEGIN IMPORTS ParamOptions, DIGEST-ALGORITHM, SIGNATURE-ALGORITHM, PUBLIC-KEY, KEY-DERIVATION, KEY-WRAP, MAC-ALGORITHM, KEY-AGREE, KEY-TRANSPORT, CONTENT-ENCRYPTION, ALGORITHM, AlgorithmIdentifier FROM AlgorithmInformation-2009 {iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) id-mod-algorithmInformation-02(58)} SignatureAlgs, MessageDigestAlgs, KeyAgreementAlgs, MessageAuthAlgs, KeyWrapAlgs, ContentEncryptionAlgs, KeyTransportAlgs, KeyDerivationAlgs, KeyAgreePublicKeys FROM CryptographicMessageSyntaxAlgorithms-2009 { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) modules(0) id-mod-cmsalg-2001-02(37) } Certificate, CertificateList, CertificateSerialNumber, Name, ATTRIBUTE FROM PKIX1Explicit-2009 { iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) id-mod-pkix1-explicit-02(51) } AttributeCertificate FROM PKIXAttributeCertificate-2009 { iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) id-mod-attribute-cert-02(47) } Schaad & Turner Expires January 12, 2011 [Page 19] Internet-Draft Additional New ASN.1 Modules July 2010 AttributeCertificateV1 FROM AttributeCertificateVersion1-2009 { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) modules(0) id-mod-v1AttrCert-02(49) } ; -- Cryptographic Message Syntax -- The following are used for version numbers using the ASN.1 -- idiom "[[n:" -- Version 1 = PKCS #7 -- Version 2 = S/MIME V2 -- Version 3 = RFC 2630 -- Version 4 = RFC 3369 -- Version 5 = RFC 3852 CONTENT-TYPE ::= TYPE-IDENTIFIER ContentType ::= CONTENT-TYPE.&id ContentInfo ::= SEQUENCE { contentType CONTENT-TYPE. &id({ContentSet}), content [0] EXPLICIT CONTENT-TYPE. &Type({ContentSet}{@contentType})} ContentSet CONTENT-TYPE ::= { -- Define the set of content types to be recognized. ct-Data | ct-SignedData | ct-EncryptedData | ct-EnvelopedData | ct-AuthenticatedData | ct-DigestedData, ... } SignedData ::= SEQUENCE { version CMSVersion, digestAlgorithms SET OF DigestAlgorithmIdentifier, encapContentInfo EncapsulatedContentInfo, certificates [0] IMPLICIT CertificateSet OPTIONAL, crls [1] IMPLICIT RevocationInfoChoices OPTIONAL, signerInfos SignerInfos } SignerInfos ::= SET OF SignerInfo EncapsulatedContentInfo ::= SEQUENCE { eContentType CONTENT-TYPE.&id({ContentSet}), eContent [0] EXPLICIT OCTET STRING ( CONTAINING CONTENT-TYPE. &Type({ContentSet}{@eContentType})) OPTIONAL } SignerInfo ::= SEQUENCE { version CMSVersion, sid SignerIdentifier, Schaad & Turner Expires January 12, 2011 [Page 20] Internet-Draft Additional New ASN.1 Modules July 2010 digestAlgorithm DigestAlgorithmIdentifier, signedAttrs [0] IMPLICIT SignedAttributes OPTIONAL, signatureAlgorithm SignatureAlgorithmIdentifier, signature SignatureValue, unsignedAttrs [1] IMPLICIT Attributes {{UnsignedAttributes}} OPTIONAL } SignedAttributes ::= Attributes {{ SignedAttributesSet }} SignerIdentifier ::= CHOICE { issuerAndSerialNumber IssuerAndSerialNumber, ..., [[3: subjectKeyIdentifier [0] SubjectKeyIdentifier ]] } SignedAttributesSet ATTRIBUTE ::= { aa-signingTime | aa-messageDigest | aa-contentType, ... } UnsignedAttributes ATTRIBUTE ::= { aa-countersignature, ... } SignatureValue ::= OCTET STRING EnvelopedData ::= SEQUENCE { version CMSVersion, originatorInfo [0] IMPLICIT OriginatorInfo OPTIONAL, recipientInfos RecipientInfos, encryptedContentInfo EncryptedContentInfo, ..., [[2: unprotectedAttrs [1] IMPLICIT Attributes {{ UnprotectedEnvAttributes }} OPTIONAL ]] } OriginatorInfo ::= SEQUENCE { certs [0] IMPLICIT CertificateSet OPTIONAL, crls [1] IMPLICIT RevocationInfoChoices OPTIONAL } RecipientInfos ::= SET SIZE (1..MAX) OF RecipientInfo EncryptedContentInfo ::= SEQUENCE { contentType CONTENT-TYPE.&id({ContentSet}), contentEncryptionAlgorithm ContentEncryptionAlgorithmIdentifier, encryptedContent [0] IMPLICIT OCTET STRING OPTIONAL } -- If you want to do constraints, you might use: -- EncryptedContentInfo ::= SEQUENCE { -- contentType CONTENT-TYPE.&id({ContentSet}), -- contentEncryptionAlgorithm ContentEncryptionAlgorithmIdentifier, -- encryptedContent [0] IMPLICIT ENCRYPTED {CONTENT-TYPE. -- &Type({ContentSet}{@contentType}) OPTIONAL } -- ENCRYPTED {ToBeEncrypted} ::= OCTET STRING ( CONSTRAINED BY Schaad & Turner Expires January 12, 2011 [Page 21] Internet-Draft Additional New ASN.1 Modules July 2010 -- { ToBeEncrypted } ) UnprotectedEnvAttributes ATTRIBUTE ::= { ... } UnprotectedEncAttributes ATTRIBUTE ::= { ... } RecipientInfo ::= CHOICE { ktri KeyTransRecipientInfo, ..., [[3: kari [1] KeyAgreeRecipientInfo ]], [[4: kekri [2] KEKRecipientInfo]], [[5: pwri [3] PasswordRecipientInfo, ori [4] OtherRecipientInfo ]] } EncryptedKey ::= OCTET STRING KeyTransRecipientInfo ::= SEQUENCE { version CMSVersion, -- always set to 0 or 2 rid RecipientIdentifier, keyEncryptionAlgorithm AlgorithmIdentifier {KEY-TRANSPORT, {KeyTransportAlgorithmSet}}, encryptedKey EncryptedKey } KeyTransportAlgorithmSet KEY-TRANSPORT ::= { KeyTransportAlgs, ... } RecipientIdentifier ::= CHOICE { issuerAndSerialNumber IssuerAndSerialNumber, ..., [[2: subjectKeyIdentifier [0] SubjectKeyIdentifier ]] } KeyAgreeRecipientInfo ::= SEQUENCE { version CMSVersion, -- always set to 3 originator [0] EXPLICIT OriginatorIdentifierOrKey, ukm [1] EXPLICIT UserKeyingMaterial OPTIONAL, keyEncryptionAlgorithm AlgorithmIdentifier {KEY-AGREE, {KeyAgreementAlgorithmSet}}, recipientEncryptedKeys RecipientEncryptedKeys } KeyAgreementAlgorithmSet KEY-AGREE ::= { KeyAgreementAlgs, ... } OriginatorIdentifierOrKey ::= CHOICE { issuerAndSerialNumber IssuerAndSerialNumber, subjectKeyIdentifier [0] SubjectKeyIdentifier, originatorKey [1] OriginatorPublicKey } OriginatorPublicKey ::= SEQUENCE { algorithm AlgorithmIdentifier {PUBLIC-KEY, {OriginatorKeySet}}, publicKey BIT STRING } OriginatorKeySet PUBLIC-KEY ::= { KeyAgreePublicKeys, ... } Schaad & Turner Expires January 12, 2011 [Page 22] Internet-Draft Additional New ASN.1 Modules July 2010 RecipientEncryptedKeys ::= SEQUENCE OF RecipientEncryptedKey RecipientEncryptedKey ::= SEQUENCE { rid KeyAgreeRecipientIdentifier, encryptedKey EncryptedKey } KeyAgreeRecipientIdentifier ::= CHOICE { issuerAndSerialNumber IssuerAndSerialNumber, rKeyId [0] IMPLICIT RecipientKeyIdentifier } RecipientKeyIdentifier ::= SEQUENCE { subjectKeyIdentifier SubjectKeyIdentifier, date GeneralizedTime OPTIONAL, other OtherKeyAttribute OPTIONAL } SubjectKeyIdentifier ::= OCTET STRING KEKRecipientInfo ::= SEQUENCE { version CMSVersion, -- always set to 4 kekid KEKIdentifier, keyEncryptionAlgorithm KeyEncryptionAlgorithmIdentifier, encryptedKey EncryptedKey } KEKIdentifier ::= SEQUENCE { keyIdentifier OCTET STRING, date GeneralizedTime OPTIONAL, other OtherKeyAttribute OPTIONAL } PasswordRecipientInfo ::= SEQUENCE { version CMSVersion, -- always set to 0 keyDerivationAlgorithm [0] KeyDerivationAlgorithmIdentifier OPTIONAL, keyEncryptionAlgorithm KeyEncryptionAlgorithmIdentifier, encryptedKey EncryptedKey } OTHER-RECIPIENT ::= TYPE-IDENTIFIER OtherRecipientInfo ::= SEQUENCE { oriType OTHER-RECIPIENT. &id({SupportedOtherRecipInfo}), oriValue OTHER-RECIPIENT. &Type({SupportedOtherRecipInfo}{@oriType})} SupportedOtherRecipInfo OTHER-RECIPIENT ::= { ... } DigestedData ::= SEQUENCE { version CMSVersion, digestAlgorithm DigestAlgorithmIdentifier, encapContentInfo EncapsulatedContentInfo, Schaad & Turner Expires January 12, 2011 [Page 23] Internet-Draft Additional New ASN.1 Modules July 2010 digest Digest, ... } Digest ::= OCTET STRING EncryptedData ::= SEQUENCE { version CMSVersion, encryptedContentInfo EncryptedContentInfo, ..., [[2: unprotectedAttrs [1] IMPLICIT Attributes {{UnprotectedEncAttributes}} OPTIONAL ]] } AuthenticatedData ::= SEQUENCE { version CMSVersion, originatorInfo [0] IMPLICIT OriginatorInfo OPTIONAL, recipientInfos RecipientInfos, macAlgorithm MessageAuthenticationCodeAlgorithm, digestAlgorithm [1] DigestAlgorithmIdentifier OPTIONAL, encapContentInfo EncapsulatedContentInfo, authAttrs [2] IMPLICIT AuthAttributes OPTIONAL, mac MessageAuthenticationCode, unauthAttrs [3] IMPLICIT UnauthAttributes OPTIONAL } AuthAttributes ::= SET SIZE (1..MAX) OF Attribute {{AuthAttributeSet}} AuthAttributeSet ATTRIBUTE ::= { aa-contentType | aa-messageDigest | aa-signingTime, ...} MessageAuthenticationCode ::= OCTET STRING UnauthAttributes ::= SET SIZE (1..MAX) OF Attribute {{UnauthAttributeSet}} UnauthAttributeSet ATTRIBUTE ::= {...} -- -- General algorithm definitions -- DigestAlgorithmIdentifier ::= AlgorithmIdentifier {DIGEST-ALGORITHM, {DigestAlgorithmSet}} DigestAlgorithmSet DIGEST-ALGORITHM ::= { CryptographicMessageSyntaxAlgorithms-2009.MessageDigestAlgs, ... } SignatureAlgorithmIdentifier ::= AlgorithmIdentifier {SIGNATURE-ALGORITHM, {SignatureAlgorithmSet}} SignatureAlgorithmSet SIGNATURE-ALGORITHM ::= Schaad & Turner Expires January 12, 2011 [Page 24] Internet-Draft Additional New ASN.1 Modules July 2010 { SignatureAlgs, ... } KeyEncryptionAlgorithmIdentifier ::= AlgorithmIdentifier {KEY-WRAP, {KeyEncryptionAlgorithmSet}} KeyEncryptionAlgorithmSet KEY-WRAP ::= { KeyWrapAlgs, ... } ContentEncryptionAlgorithmIdentifier ::= AlgorithmIdentifier {CONTENT-ENCRYPTION, {ContentEncryptionAlgorithmSet}} ContentEncryptionAlgorithmSet CONTENT-ENCRYPTION ::= { ContentEncryptionAlgs, ... } MessageAuthenticationCodeAlgorithm ::= AlgorithmIdentifier {MAC-ALGORITHM, {MessageAuthenticationCodeAlgorithmSet}} MessageAuthenticationCodeAlgorithmSet MAC-ALGORITHM ::= { MessageAuthAlgs, ... } KeyDerivationAlgorithmIdentifier ::= AlgorithmIdentifier {KEY-DERIVATION, {KeyDerivationAlgs, ...}} RevocationInfoChoices ::= SET OF RevocationInfoChoice RevocationInfoChoice ::= CHOICE { crl CertificateList, ..., [[5: other [1] IMPLICIT OtherRevocationInfoFormat ]] } OTHER-REVOK-INFO ::= TYPE-IDENTIFIER OtherRevocationInfoFormat ::= SEQUENCE { otherRevInfoFormat OTHER-REVOK-INFO. &id({SupportedOtherRevokInfo}), otherRevInfo OTHER-REVOK-INFO. &Type({SupportedOtherRevokInfo}{@otherRevInfoFormat})} SupportedOtherRevokInfo OTHER-REVOK-INFO ::= { ... } CertificateChoices ::= CHOICE { certificate Certificate, extendedCertificate [0] IMPLICIT ExtendedCertificate, -- Obsolete ..., [[3: v1AttrCert [1] IMPLICIT AttributeCertificateV1]], -- Obsolete [[4: v2AttrCert [2] IMPLICIT AttributeCertificateV2]], [[5: other [3] IMPLICIT OtherCertificateFormat]] } Schaad & Turner Expires January 12, 2011 [Page 25] Internet-Draft Additional New ASN.1 Modules July 2010 AttributeCertificateV2 ::= AttributeCertificate OTHER-CERT-FMT ::= TYPE-IDENTIFIER OtherCertificateFormat ::= SEQUENCE { otherCertFormat OTHER-CERT-FMT. &id({SupportedCertFormats}), otherCert OTHER-CERT-FMT. &Type({SupportedCertFormats}{@otherCertFormat})} SupportedCertFormats OTHER-CERT-FMT ::= { ... } CertificateSet ::= SET OF CertificateChoices IssuerAndSerialNumber ::= SEQUENCE { issuer Name, serialNumber CertificateSerialNumber } CMSVersion ::= INTEGER { v0(0), v1(1), v2(2), v3(3), v4(4), v5(5) } UserKeyingMaterial ::= OCTET STRING KEY-ATTRIBUTE ::= TYPE-IDENTIFIER OtherKeyAttribute ::= SEQUENCE { keyAttrId KEY-ATTRIBUTE. &id({SupportedKeyAttributes}), keyAttr KEY-ATTRIBUTE. &Type({SupportedKeyAttributes}{@keyAttrId})} SupportedKeyAttributes KEY-ATTRIBUTE ::= { ... } -- Content Type Object Identifiers id-ct-contentInfo OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs9(9) smime(16) ct(1) 6 } ct-Data CONTENT-TYPE ::= {OCTET STRING IDENTIFIED BY id-data} id-data OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs7(7) 1 } ct-SignedData CONTENT-TYPE ::= { SignedData IDENTIFIED BY id-signedData} id-signedData OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs7(7) 2 } Schaad & Turner Expires January 12, 2011 [Page 26] Internet-Draft Additional New ASN.1 Modules July 2010 ct-EnvelopedData CONTENT-TYPE ::= { EnvelopedData IDENTIFIED BY id-envelopedData} id-envelopedData OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs7(7) 3 } ct-DigestedData CONTENT-TYPE ::= { DigestedData IDENTIFIED BY id-digestedData} id-digestedData OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs7(7) 5 } ct-EncryptedData CONTENT-TYPE ::= { EncryptedData IDENTIFIED BY id-encryptedData} id-encryptedData OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs7(7) 6 } ct-AuthenticatedData CONTENT-TYPE ::= { AuthenticatedData IDENTIFIED BY id-ct-authData} id-ct-authData OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) ct(1) 2 } -- -- The CMS Attributes -- MessageDigest ::= OCTET STRING SigningTime ::= Time Time ::= CHOICE { utcTime UTCTime, generalTime GeneralizedTime } Countersignature ::= SignerInfo -- Attribute Object Identifiers aa-contentType ATTRIBUTE ::= { TYPE ContentType IDENTIFIED BY id-contentType } id-contentType OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs9(9) 3 } aa-messageDigest ATTRIBUTE ::= { TYPE MessageDigest IDENTIFIED BY id-messageDigest} id-messageDigest OBJECT IDENTIFIER ::= { iso(1) member-body(2) Schaad & Turner Expires January 12, 2011 [Page 27] Internet-Draft Additional New ASN.1 Modules July 2010 us(840) rsadsi(113549) pkcs(1) pkcs9(9) 4 } aa-signingTime ATTRIBUTE ::= { TYPE SigningTime IDENTIFIED BY id-signingTime } id-signingTime OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs9(9) 5 } aa-countersignature ATTRIBUTE ::= { TYPE Countersignature IDENTIFIED BY id-countersignature } id-countersignature OBJECT IDENTIFIER ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs9(9) 6 } -- -- Obsolete Extended Certificate syntax from PKCS#6 -- ExtendedCertificateOrCertificate ::= CHOICE { certificate Certificate, extendedCertificate [0] IMPLICIT ExtendedCertificate } ExtendedCertificate ::= SEQUENCE { extendedCertificateInfo ExtendedCertificateInfo, signatureAlgorithm SignatureAlgorithmIdentifier, signature Signature } ExtendedCertificateInfo ::= SEQUENCE { version CMSVersion, certificate Certificate, attributes UnauthAttributes } Signature ::= BIT STRING Attribute{ ATTRIBUTE:AttrList } ::= SEQUENCE { attrType ATTRIBUTE. &id({AttrList}), attrValues SET OF ATTRIBUTE. &Type({AttrList}{@attrType}) } Attributes { ATTRIBUTE:AttrList } ::= SET SIZE (1..MAX) OF Attribute {{ AttrList }} END Schaad & Turner Expires January 12, 2011 [Page 28] Internet-Draft Additional New ASN.1 Modules July 2010 10. ASN.1 Module RFC 5083 This module is updated from RFC 5911 [RFC5911] by defining seperate attribute sets for the protected and unprotected attribute sets. By using different attribute sets for AuthenticatedData and AuthEnvelopedData, protocol designers can make use of the '02 ASN.1 constraints to define different sets of attributes for AuthenticatedData and AuthEnvelopedData. Previously, attributes could only be constrained based on whether they were unauthenticated not on the content type. Schaad & Turner Expires January 12, 2011 [Page 29] Internet-Draft Additional New ASN.1 Modules July 2010 CMS-AuthEnvelopedData-2009 {iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) modules(0) TBD} DEFINITIONS IMPLICIT TAGS ::= BEGIN IMPORTS CMSVersion, EncryptedContentInfo, MessageAuthenticationCode, OriginatorInfo, RecipientInfos, CONTENT-TYPE, Attributes{} FROM CryptographicMessageSyntax-2009 {iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) modules(0) id-mod-cms-2004-02(41)} ; ContentTypes CONTENT-TYPE ::= {ct-authEnvelopedData, ... } ct-authEnvelopedData CONTENT-TYPE ::= { AuthEnvelopedData IDENTIFIED BY id-ct-authEnvelopedData } id-ct-authEnvelopedData OBJECT IDENTIFIER ::= {iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) ct(1) 23} AuthEnvelopedData ::= SEQUENCE { version CMSVersion, originatorInfo [0] IMPLICIT OriginatorInfo OPTIONAL, recipientInfos RecipientInfos, authEncryptedContentInfo EncryptedContentInfo, authAttrs [1] IMPLICIT AuthAttributes OPTIONAL, mac MessageAuthenticationCode, unauthAttrs [2] IMPLICIT UnauthAttributes OPTIONAL } AuthAttributes ::= Attributes{{AuthEnvDataAttributeSet}} UnauthAttributes ::= Attributes{{UnauthEnvDataAttributeSet}} AuthEnvDataAttributeSet ::= {aa-contentType | aa-messageDigest | aa-signedTime, ... } UnauthEnvDataAttributeSet ::= {...} END Schaad & Turner Expires January 12, 2011 [Page 30] Internet-Draft Additional New ASN.1 Modules July 2010 11. Module Identifiers in ASN.1 One potential issue that can occur when updating modules is the fact that a large number of modules may need to be updated if they import from a newly updated module. This section addresses one method that can be used to deal with this problem, but the modules in this document don't currently implement the solution discussed here. When looking at an import statement, there are three portions: The list of items imported, a textual name for the module and an object identifier for the module. Full implementations of ASN.1 do module matching using first the object identifier and if that is not present the textual name of the module. Note however that some older implementations used the textual name of the module for the purposes of matching. In a full implementation the name assigned to the module is scoped to the ASN.1 module that it appears in (and thus need to match the module it is importing from). One can create a module that contains only the module number assignments and import the module assignments from the new module. This means that when a module is replaced, one can replace the previous module, update the module number assigment module and recompile without having to modify any other modules. A sample module assigment module would be: ModuleNumbers DEFINITIONS TAGS ::= BEGIN id-mod-CMS ::= { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9) smime(16) modules(0) TBD } id-mod-AlgInfo ::= {iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-mod(0) id-mod-algorithmInformation-02(58)} END This would be used in the following import statement: Schaad & Turner Expires January 12, 2011 [Page 31] Internet-Draft Additional New ASN.1 Modules July 2010 IMPORTS id-mod-CMS, id-mod-AlgInfo FROM ModuleNumber -- Note it will match on the name since no -- OID is provided CMSVersion, EncapsulatedContentInfo, CONTENT-TYPE FROM CryptographicMessageSyntax-2009 id-mod-CMS AlgorithmIdentifier{}, SMIME-CAPS, ParamOptions FROM AlgorithmInformation-2009 id-mod-AlgInfo ; Schaad & Turner Expires January 12, 2011 [Page 32] Internet-Draft Additional New ASN.1 Modules July 2010 12. Security Considerations This document itself does not have any security considerations. The ASN.1 modules keep the same bits-on-the-wire as the modules that they replace. Schaad & Turner Expires January 12, 2011 [Page 33] Internet-Draft Additional New ASN.1 Modules July 2010 13. IANA Considerations None. Schaad & Turner Expires January 12, 2011 [Page 34] Internet-Draft Additional New ASN.1 Modules July 2010 14. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC3274] Gutmann, P., "Compressed Data Content Type for Cryptographic Message Syntax (CMS)", RFC 3274, June 2002. [RFC3379] Pinkas, D. and R. Housley, "Delegated Path Validation and Delegated Path Discovery Protocol Requirements", RFC 3379, September 2002. [RFC4049] Housley, R., "BinaryTime: An Alternate Format for Representing Date and Time in ASN.1", RFC 4049, April 2005. [RFC4073] Housley, R., "Protecting Multiple Contents with the Cryptographic Message Syntax (CMS)", RFC 4073, May 2005. [RFC4231] Nystrom, M., "Identifiers and Test Vectors for HMAC-SHA- 224, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512", RFC 4231, December 2005. [RFC4334] Housley, R. and T. Moore, "Certificate Extensions and Attributes Supporting Authentication in Point-to-Point Protocol (PPP) and Wireless Local Area Networks (WLAN)", RFC 4334, February 2006. [RFC5083] Housley, R., "Cryptographic Message Syntax (CMS) Authenticated-Enveloped-Data Content Type", RFC 5083, November 2007. [RFC5652] Housley, R., "Cryptographic Message Syntax (CMS)", RFC 5652, September 2009. [RFC5752] Turner, S. and J. Schaad, "Multiple Signatures in Cryptographic Message Syntax (CMS)", RFC 5752, January 2010. [RFC5911] Hoffman, P. and J. Schaad, "New ASN.1 Modules for Cryptographic Message Syntax (CMS) and S/MIME", RFC 5911, June 2010. [RFC5912] Hoffman, P. and J. Schaad, "New ASN.1 Modules for the Public Key Infrastructure Using X.509 (PKIX)", RFC 5912, June 2010. [ASN1-2008] Schaad & Turner Expires January 12, 2011 [Page 35] Internet-Draft Additional New ASN.1 Modules July 2010 ITU-T, "ITU-T Recommendations X.680, X.681, X.682, and X.683", 2008. Schaad & Turner Expires January 12, 2011 [Page 36] Internet-Draft Additional New ASN.1 Modules July 2010 Authors' Addresses Jim Schaad Soaring Hawk Consulting Email: jimsch@augustcellars.com Sean Turner IECA, Inc. 3057 Nutley Street, Suite 106 Fairfax, VA 22031 Email: turners@ieca.com Schaad & Turner Expires January 12, 2011 [Page 37]